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viernes, 12 de septiembre de 2014

ALERTA BIBLIOGRÁFICA DE LA PRODUCCIÓN CIENTÍFICA DEL COLEGIO DE POSTGRADUADOS EN REVISTAS INDIZADAS EN LA COLECCIÓN PRINCIPAL DEL ISI WEB DE LA CIENCIA No. 58 AGOSTO 2014


COLEGIO DE POSTGRADUADOS

DIRECCIÓN DE EDUCACIÓN






ALERTA BIBLIOGRÁFICA DE LA PRODUCCIÓN CIENTÍFICA DEL COLEGIO DE POSTGRADUADOS EN REVISTAS INDIZADAS EN LA COLECCIÓN PRINCIPAL DEL ISI WEB DE LA CIENCIA (Science Citation Index Expanded (SCIE) y Social Sciences Citation Index (SSCI)


 No. 58,  periodo del 5 de marzo al 20 de agosto de 2014























Ángel Bravo Vinaja. Recursos y Servicios de Información Científica y Tecnológica, RESDICYT-COLPOS. Campus San Luis Potosí. Iturbide 73, Salinas de Hidalgo, S. L. P. 78622, México Tel. +52(496) 96 30240 ext. 4039. abravo@colpos.mx
31 de agosto de 2014

















 INTRODUCCIÓN

 
Se muestran 76 registros de documentos en los que participan como autores personal académico del Colegio de Postgraduados, los cuales se obtuvieron de la Colección Principal del ISI Web de la Ciencia (WOS) de la empresa Thomson Reuters, específicamente del Science Citation Index Expanded (SCIE) y Social Sciences Citation Index (SSCI). El factor de impacto de las revistas (FI), y las categorías de la ciencia en la que se clasifican se obtuvieron del Journal of Citation Reports (JCR) edición 2013.
El orden de los registros aparece ordenado alfabéticamente de acuerdo a las categorías en que el JCR clasifica a las revistas, y dentro de cada categoría, se ordenan de acuerdo al cociente del FI de la revista (Cuadro 1).
Se incluye el identificador de objetos digitales (DOI) solo cuando está disponible. En los registros que no tienen DOI se agregó la URL o liga a la página Web que contiene el texto completo, disponible solamente a quien tenga acceso al mismo.
El cuadro 1 incluye los nombres de las revistas en las que se publicaron los artículos indizados en la Colección Principal del WOS, ordenados primero por categoría del JCR y después por el cociente de la posición en la categoría JCR de cada revista. Entre más pequeño es el resultado, mejor posicionada se encuentra la revista en la categoría JCR; de esta manera en el cuadro aparece ordenado primero las revistas de más “calidad” en orden decreciente dentro de cada categoría JCR. Es la posición en las categorías JCR la que le da su real valor o impacto a las revistas, ya que solo se pueden comparar con las que publican contenidos de una misma categoría de la ciencia.




Cuadro 1. Revistas en las que publicaron artículos los investigadores del Colegio de Postgraduados, ordenadas por categoría del JCR y después por el cociente de la posición en la categoría JCR donde se clasifica cada revista. Se lista también para cada revista, el Factor de Impacto 2013, la posición en la categoría y el cuartil que le corresponde a la revista, y el número de artículos que se publicaron en las revistas indizadas. Las revistas mejor posicionadas en la categoría JCR correspondiente son las que tienen el cociente más cercano al 0.
Revistas
Factor de Impacto 2013
Materia JCR
Posición en la materia-Cuartil
Cociente de la posición
No.  de artículos
CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
0.538
Agricultura multidisciplinaria
36/56-Q3
0.643
3
CIENCIA E INVESTIGACION AGRARIA
0.283
Agricultura multidisciplinaria
45/56-Q4
0.804
1
AGROCIENCIA
0.049
Agricultura multidisciplinaria
54/56-Q4
0.965
7
JOURNAL OF DAIRY SCIENCE
2.55
Agricultura, ciencia animal y de la leche
2/51-Q1
0.039
1
JOURNAL OF ANIMAL BREEDING AND GENETICS
2.059
Agricultura, ciencia animal y de la leche
5/51-Q1
0.098
1
POULTRY SCIENCE
1.544
Agricultura, ciencia animal y de la leche
12/51-Q1
0.236
1
REVISTA MVZ CORDOBA
0.318
Agricultura, ciencia animal y de la leche
41/51-Q4
0.804
2
REVISTA MEXICANA DE CIENCIAS PECUARIAS
0.231
Agricultura, ciencia animal y de la leche
46/51-Q4
0.902
6
THEORETICAL AND APPLIED GENETICS
3.507
Agronomía
4/78-Q1
0.051
1
POSTHARVEST BIOLOGY AND TECHNOLOGY
2.628
Agronomía
12/78-Q1
0.154
1
EUROPEAN JOURNAL OF PLANT PATHOLOGY
1.707
Agronomía
20/78-Q2
0.257
2
AMERICAN JOURNAL OF POTATO RESEARCH
0.951
Agronomía
38/78-Q2
0.487
1
REVISTA FITOTECNIA MEXICANA
0.295
Agronomía
67/78-Q4
0.859
10
BIOLOGICAL RESEARCH
1.041
Biología
51/83-Q3
0.615
1
FOREST ECOLOGY AND MANAGEMENT
2.667
Bosques
4/64-Q1
0.063
4
REVISTA CHAPINGO SERIE CIENCIAS FORESTALES Y DEL AMBIENTE
0.216
Bosques
63/64-Q4
0.985
2
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
3.003
Ciencia de las plantas
36/196-Q1
0.184
1
PLANT DISEASE
2.742
Ciencia de las plantas
45/196-Q1
0.23
1
JOURNAL OF PLANT ECOLOGY
2.254
Ciencia de las plantas
62/196-Q2
0.317
1
BOTANICAL SCIENCES
0.382
Ciencia de las plantas
177/196-Q4
0.393
1
ACTA PHYSIOLOGIAE PLANTARUM
1.524
Ciencia de las plantas
89/196-Q2
0.454
1
INVASIVE PLANT SCIENCE AND MANAGEMENT
0.836
Ciencia de las plantas
134/196-Q3
0.684
1
BRITTONIA
0.371
Ciencia de las plantas
180/196-Q4
0.919
1
PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY
0.257
Ciencia de las plantas
187/196-Q4
0.954
2
SOIL & SEDIMENT CONTAMINATION
0.575
Ciencias ambientales
196/215-Q4
0.912
1
REVISTA INTERNACIONAL DE CONTAMINACION AMBIENTAL
0.328
Ciencias ambientales
212/215-Q4
0.986
1
REVISTA CIENTIFICA-FACULTAD DE CIENCIAS VETERINARIAS
0.202
Ciencias veterinarias
116/129-Q4
0.975
1
TROPICAL CONSERVATION SCIENCE
1.329
Conservación de la Biodiversidad
22/41-Q3
0.537
1
REVISTA MEXICANA DE BIODIVERSIDAD
0.449
Conservación de la Biodiversidad
34/41-Q4
0.829
2
BIOTROPICA
2.082
Ecología
65/140-Q2
0.465
1
INTERCIENCIA
0.248
Ecología
138/214-Q4
0.645
2
APPLIED ECONOMICS
0.518
Economía
226/332-Q3
0.681
1
FLORIDA ENTOMOLOGIST
1.056
Entomología
42/90-Q2
0.467
1
COLEOPTERISTS BULLETIN
0.726
Entomología
53/90-Q3
0.589
1
REVISTA COLOMBIANA DE ENTOMOLOGIA
0.331
Entomología
81/90-Q4
0.9
1
JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE
1.978
Farmacología y farmacia
151/254-Q3
0.595
1
SCIENTIA HORTICULTURAE
1.504
Horticultura
9/32-Q2
0.282
1
REVISTA BRASILEIRA DE FRUTICULTURA
0.487
Horticultura
23/32-Q3
0.719
1
THERAPEUTIC INNOVATION & REGULATORY SCIENCE[1]
0.089
Informática médica
24/25-Q4
0.96
1
FUNGAL BIOLOGY
2.139
Micología
10/23-Q2
0.435
1
JOURNAL OF HELMINTHOLOGY
1.303
Parasitología
20/36-Q3
0.556
1
TECNOLOGIA Y CIENCIAS DEL AGUA
0.086
Recursos hidráulicos
79/79-Q4
1
2
ASIAN PACIFIC JOURNAL OF TROPICAL MEDICINE
0.926
Salud pública, ambiental y ocupacional
125/160-Q4
0.783
1
JOURNAL OF INVERTEBRATE PATHOLOGY
2.601
Zoología
16/152-Q1
0.106
1
Fuente: Elaboración propia con datos del Journal of Citation Reports 2013






 


REFERENCIAS BIBLIOGRÁFICAS

AGRICULTURA MULTIDICIPLINARIA

CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
Referencia bibliográfica:  1 de 76
Título: Repellency, toxicity, and oviposition inhibition of vegetable extracts against greenhouse whitefly Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae)
Autores: Eduardo Mendoza-Garcia, Edgar; Delia Ortega-Arenas, Laura; Perez-Pacheco, Rafael; Rodriguez-Hernandez, Cesareo
Revista: CHILEAN JOURNAL OF AGRICULTURAL RESEARCH, 74 (1):41-48; JAN-MAR 2014.
Idioma: Inglés
Resumen: In a search for sustainable options of greenhouse whitefly Trialeurodes vaporariorum (Westwood) management, the toxic and/or repellent potential of water, ethanolic, and acetonic extracts of Ambrosia artemisiifolia L. (Asteraceae), Comocladia engleriana Loes (Anacardiaceae), Piper auritum Kunth (Piperaceae), Raphanus raphanistrum L. (Brassicaceae), and Taraxacum officinale F.H. Wigg. aggr.* (Asteraceae) were evaluated. Repellency was assessed by the cylinder method (olfactometer), while toxicity and oviposition inhibition were assessed by the leaf immersion method. Acetonic extracts did not cause any repellent or insecticidal effect. In contrast, 200 mg mL(-1) water and ethanolic extracts of R. raphanistrum and ethanolic extract of A. artemisiifolia had the highest repellent activity (76%, 72%, and 69%, respectively) although their activity decreased gradually over time. Ethanolic extracts of P. auritum (66%) and R. raphanistrum (56%) at 200 mg mL(-1) were highlighted as being toxic, while the most effective in inhibiting oviposition were water extracts of R. rap hanistrum (76.1%) and P. auritum (72.0%) and ethanolic extract of P. auritum (69.5%); however, concentrations lower than 60 mg mL(-1) caused oviposition stimulation. Our results suggest that water and ethanolic extracts of R. raphani strum and P. auritum represent a useful tool in integrated whitefly management.
ISSN: 0718-5839

Referencia bibliográfica: 2 de 76
Título: Indications that some nutritional elements can improve gladiolus corm and cormel qualities in Mexico
Autores: González-Pérez, Enrique; Javier Ayala-Garay, Oscar; de Jesús Yánez-Morales, María
Revista: CHILEAN JOURNAL OF AGRICULTURAL RESEARCH, 74 (1):67-72 JAN-MAR 2014.
Idioma: Inglés
Resumen: In regions of the State of Puebla (Mexico), gladiolus (Gladiolus grandiflorus Andrews) production has had asexual propagation problems, which have caused losses for producers, who mostly produce their own vegetative seeds. The aim of this study was to evaluate some physical qualities and health characteristics of corms and cormels generated at four fertilization rates (FD, kg ha(-1)): 65N-14.9P-171K-16.6Mg-31.2Ca-0.0B-0.0S (FD1); 40.5N-24P-171K-23Mg-37.2Ca0.2B-8.5S (FD2); 81N-24P-171K-23Mg-37.2Ca-0.2B-0.0S (FD3); and 81N-24P-171K-23Mg-37.2Ca-0.0B-0.0S (FDR; traditional regional rate). Two hundred and forty corms, along with their cormels, of two varieties ('Borrega Roja' and 'Espuma') produced at four FDs were harvested. The following physical qualities of corms were assessed; corm fresh weight (CFW), number of cormels generated (NcMC), and total fresh weight (TFVV); evaluated physical qualities of cormels were size (mm) and total weight. Cormel health was analyzed in 160 randomly disinfested pieces that were plated in agar medium with or without splitting. The percentage of identified fungus incidence was Referencia bibliográfica: ed. Data were analyzed by a non-parametric one-way ANOVA. No significant differences were shown for CFW. The best treatments were mainly FD2 followed by FD1. In relation to FD-R, FD2 in both varieties increased NcMC by 31% to 69%, TFW by 27% to 46%, 6-8 size by 24% to 27%, and the development of Fusarium oxysporum colonies was reduced by 100% in cormel internal tissue.
ISSN: 0718-5839


Referencia bibliográfica:  3 de 76
Título: Effect of vacuum storage on shelf life of a grain protector based on Peumus boldus Molina foliage powder and lime against Sitophilus zeamais Motschulsky.
Autores: Rivera, Paulina; Silva, Gonzalo; Figueroa, Inés; Tapia, Maritza;
Concepcion Rodriguez, J.
Revista: CHILEAN JOURNAL OF AGRICULTURAL RESEARCH, 74 (1):49-54 JAN-MAR 2014.
Idioma: Inglés
Resumen: The maize weevil (Sitophilus zeamais Motschulsky, Coleoptera: Curculionidae) is a key pest of stored grain maize. As an ecological pest control alternative, the use of botanical insecticides, such as powder from boldus (Peumus boldus Molina) foliage singly or mixed with lime, has been evaluated. Unfortunately, its shelf life is very short and does not exceed 15 d. The effectiveness of vacuum storage on insecticidal properties of a natural grain protector produced with boldus powder:lime at proportions of 50:50 and 60:40 against adults of S. zeamais was assessed under labciratory conditions. Treatments were evaluated at 1% and 2% (w/w) for 150 d of storage. All treatments based on boldus powder kept the level of mortality by contact activity over 80% at 150 d of storage. The highest toxicity, as a fumigant, was observed in treatments 50:50 at 2% and 60:40 at 1% and 2% with mortality over 60%. The grain weight loss was less than 1% and seed germination was not affected. With the exception of 0:100 at 2% without vacuum storage, all treatments were repellent to S. zeamais. Vacuum storage extended shelf life of the grain protector for 150 d.
ISSN: 0718-5839


CIENCIA E INVESTIGACIÓN AGRARIA
Referencia bibliográfica: 4 de 76
Título: Ruminal degradation of aerial biomass and seeds of wild species of Lupinus
Autores: Pablo-Pérez, Maricela; Lagunés-Espinoza, Luz del C.; Ramos-Juárez, Jesús; López-Upton, Javier; Aranda-Ibáñez, Emilio M.; Vargas-Villamil, Luis
Revista: CIENCIA E INVESTIGACION AGRARIA, 41 (1):5-12; JAN-APR 2014.
Idioma: Inglés
Resumen: Ruminal degradation of thy matter (DMD) and crude protein (CPD) for aerial biomass at the flowering stage and for the seeds of L. campestris, L. exaltatus, L. hintonii and L. montanus was determined using the nylon bag technique with two fistulated steers in five incubation times (3, 9, 12, 24 and 48 h), including a sample of soybean paste (SP). The data obtained were analyzed using PROC MIXED of SAS for repeated measures. The results showed interactions between species and incubation time for DMD and CPD. Among species of lupine, a high DMD and CPD of seeds were observed after three hours of incubation. At 48 h, DMD and CPD did not show significant variation between species: DMD ranged from 94.3% to 96.7% and CPD from 98.9 to 99.2%. The degradation rate of the insoluble fraction of the DM (kd) in lupine seeds ranged from 6.3 to 8.1% h(-1), while that of the soluble fraction (SF) ranged from 42.3 to 57.3%, lower value that observed in SP. The DMD and CPD of aerial biomass showed statistically significant differences between species at 48 h of incubation. L. hintonii showed the lowest DMD (69.6%) and CPD (88.9%). L. montanus and L. campestris showed a lower SF and kd (kd of 5.4% h(-1) in both, and 35.4 and 37.2 for SF, respectively) and high CPD of aerial biomass. It is concluded that the DM and CP of seeds and biomass of wild lupine were highly degradable as of 3 h of incubation. At 48 h, there were statistically significant differences between DMD and CPD of aboveground biomass (AGB). L. campestris and L. exaltatus showed the highest DMD and CPD of AGB and similar DMD and CPD of seeds.
ISSN: 0718-1620


AGROCIENCIA
Referencia bibliográfica:  5 de 76
Título: HIGH YIELDING INBRED LINES OF MAIZE AS PROGENITORS OF SINGLE CROSS HYBRIDS
Autores: Pérez-López, Francisco J.; Lobato-Ortiz, Ricardo; García-Zavala, José de J.; Molina-Galán, José D.; López-Reynoso, José de J.; Cervantes-Santana, Tarcicio
Revista: AGROCIENCIA, 48 (4):425-437; MAY-JUN 2014
Idioma: Inglés
Resumen: In Mexico, maize (Zea mays L.) seed production of single cross hybrids is not profitable because the inbred lines used in these as the female parent are of low yield. The objective of this study was to assess the general and specific combining ability of 10 high yielding inbred lines of maize derived from adapted exotic maize populations to be used as parents for single cross hybrids. The 45 diallelic crosses between the 10 lines, the progenitors (Griffing's Method II), and four commercial hybrids used as controls, were assessed for three years in Montecillo, Estado de Mexico. The lines were derived from a high-density cultivation system and gamma irradiation during eight cycles of selection. The traits evaluated were ear yield per plant, yield components, and days to female flowering. The lines with the greatest and lowest per se yield produced 7.34 and 5.45 t ha(-1), respectively. Line 3 showed the highest GCA effects along with a good behavior per se and also participated in three of the five single crosses with the highest yield. In contrast, Line 5, which was present in three of the five crosses with the lowest yield, showed a low yield per se, low GCA and low SCA in specific combinations. The crosses L3 X L4 and L4 x L5 matched the yield of the best check hybrids and were more precocious. The most productive lines could represent an advantage for the production of seed from single cross hybrids of high productive potential and at lower costs.
ISSN: 1405-3195


Referencia bibliográfica: 6 de 76
Título: PRE-SOWING TREATMENTS: AN OPTION TO INCREASE GERMINATION OF HABANERO PEPPER SEEDS (Capsicum chinense Jacq.)
Autores: Garruna-Hernández, Rene; Latournerie-Moreno, Luis; Ayala-Garay, Oscar; Santamaría, Jorge M.; Pinzón -López, Luis
Revista: AGROCIENCIA, 48 (4):413-423; MAY-JUN 2014
Idioma: Inglés
Resumen: Habanero pepper (Capsicum chinense Jacq.) seeds decrease their germination after storage periods exceeding 100 d. Pre-sowing treatments, reinvigorate, accelerate and uniform seed germination of the genus Capsicum. In this study habanero pepper seeds were pre-treated during 144 h with constant aeration in distilled water and aqueous solutions (treatments) of: KNO3 at 3 %, polyethylene glycol (PEG) at -0.5 MPa, abscisic acid (ABA) at 10(-5) M and gibberellic acid (GA(3)) at 400 ppm. After pre-sowing treatments, seeds were germinated in petri dishes and trays (the control was sown without pre-treatment). The experimental design was a completely randomized, the data were used to perform ANOVA and means were compared using Tukey test (p <= 0.05). Results showed that seeds treated with ABA (13.22 % of germinated seeds d(-1)) increased germination rate compared with the control (6.38 % of germinated seeds d(-1)) and all pre-sowing treatments increased the germination percentage (%G), but not all of them maintained that increase during emergence. In emergence percentage (%E) only PEG and KNO3 treatments (osmotic) were statistically different from the control surpassing it at 36 and 21 %. Osmotic treatments avoided protrusion during the pre-sowing treatment and their %E was similar to %G. The pre-sowing treatment of seeds is optimal if germination and emergence is increased; therefore the presowing treatment of habanero pepper seeds with KNO3, PEG and ABA is more appropriate to increase seedling establishment.
ISSN: 1405-3195


Referencia bibliográfica:  7 de 76
Título: COMPARISON OF EFFECT OF OSMOREGULATORS AND GROWTH INHIBITORS ON in vitro CONSERVATION OF SUGARCANE
Autores: Bello-Bello, Jericó; Poot-Poot, Wilberth; Iglesias-Andreu, Lourdes; Caamal-Velázquez, Humberto; de la Cruz Díaz-Sánchez, María
Revista: AGROCIENCIA, 48 (4):439-446; MAY-JUN 2014
Idioma: Inglés
Resumen: In vitro conservation systems are an option for preserving sugarcane germplasm (Saccharum sp.). The objective of this study was to assess the effect of the osmoregulators manitol and sorbitol (0, 15, 30 and 45 g L-1) and the plant growth inhibitors abscisic acid (ABA) and padobutrazol (PAC) (0, 1, 2 and 3 mg L-1) on in vitro growth of sugarcane. The plants used were 2 cm tall in vitro shoots of the variety Mex-69-290 obtained in the multiplication phase. In all cases MS (Murashige and Skoog) medium was used. The experimental design was completely random with 10 explants per treatment. Data were analyzed with an analysis of variance (ANOVA) and means were compared with the Tukey test (p <= 0.05). After 180 d of culture, survival percentage, number and length of the shoots, number of leaves, and number and length of roots were assessed. Analysis of the results showed that an increase in concentrations of osmoreg-ulators produced a decrease in all of the variables assessed. For the inhibitors, the PAC treatments maintained 100 % survival and promoted more shoots per explant. This contrasted with the ABA treatments in which the assessed variables decreased. Reduction in height and presence of axillary shoots observed in treatments with PAC may be of interest for in vitro conservation, and, it is concluded that the use of PAC would be a new option for in vitro conservation of sugarcane germplasm.
ISSN: 1405-3195

Referencia bibliográfica: 8 de 76
Título:
Tabebuia donnell-smithii Rose GROWTH INOCULATED WITH MYCORRHIZAL FUNGI AND Azospirillum brasilense
Autores: Aguirre-Medina, Juan F.; Culebro-Cifuentes, Fernando; Cadena-Iñiguez,
Jorge; Aguirre-Cadena, Juan E.
Revista: AGROCIENCIA, 48 (3):331-345; APR-MAY 2014
Idioma: Inglés, Español
Resumen: Unregulated logging in tropical forests promotes invasion of secondary vegetation that compete with species of medium and slow growth, limiting their natural regeneration. Many reforestation efforts fail for this situation endangering the ecosystem balance by differences in density and distribution of species. In order to promote a greater growth in shorter time of the timber species (Tabebuia donnell-smithii Rose) primavera under nursery conditions, the effect of inoculation with Rhizophagus intraradices (Schenck et Sm.) Walker et Schuessler, Glomus spp., and Azospirillum brasilense Tarrand, Krieg et Dobereiner was evaluated. Nursery was established with seeds collected in the Soconusco, Chiapas, Mexico, in plastic bags of 5 kg with a mixture of Andosol-mollic soil and river sand washed (1:1) with 2 g of inoculant at the time of transplantation. Azospirillum brasilense had a concentration of 9x10(6) bacteria g(-1) and R. intraradices 40 spores CI of soil with 95% of colonization to the root system. The experimental design was completely randomized treatments were individual, combined microorganisms, and a control with four replications. Morphological and physiological variables of yield, percentage of mycorrhizal root colonization were Referencia bibliográfica: ed every 28 d from the 56 d to 168 d after sowing. Plants with R. intraradices, doble symbiosis A. brasilense+ R. intraradices and Glomus sp. (V) showed higher increase of biomass at 112 d (p <= 0.05), whereas the highest nitrogen content was found in roots of plants inoculated with R. intraradices and in the shoot with A. brasilense. The phosporus content was higher with A. brasilense and R. intraradices on the shoot. The final significant differences in plant height were 6 to 8 cm among inoculated treatments and of 16 cm of these with respect to the control.
ISSN: 1405-3195

Referencia bibliográfica: 9 de 76
Título: MYCORRHIZAL INOCULUM PRODUCTION OF Gigaspora gigantea IN GROWING MEDIA AND PARTICLE SIZE
Autores: Jiménez-Martínez, Arturo; González-Chávez, M. Carmen A.; Carmen Gutiérrez-Castorena, M.; Encarnación Lara-Hernández, M.; Luis García-Cue, J.
Revista: AGROCIENCIA, 48 (3):239-254; APR-MAY 2014
Idioma: Inglés, Español
Resumen: There is little information about the influence of particle size and the physical and chemical properties of the growing media used for mycorrhizal inoculum production. The objetive of this study was to evaluate the number of spores, root colonization, aerial and root dry biomass, and root volume produced by lettuce plants inoculated with Gigaspora gigantea in 12 substrates made with different size particles. Growing media were prepared with two types of coconut coir (Cocos nucifera): granular (Gc) and fibrous (Fc) mixed with pumice (P) and volcanic scoria (locally called tezontle T), with three granulometries (<0,-6 mm, 0.6-1 mm, 1-2 mm) in a ratio 3:1 v/v, except Gc:P:T (1-2 mm) in a ratio 6:1:1 v/v. The control treatment consisted of a mixture of peatagrolite:vertniculite (Pe:A:V) in bulk material with a 2:1:1 v/v ratio. Lactuca sativa var. King Henry was used as host plant. The experiment was evaluated 75 d after sowing with an analysis of variance and comparison of means (Tukey <= 0.05). The micromorphological study and image analysis determined the interaction of growing media-rootspores. The highest mycorrhizal colonization (p <= 5.0.05) occurred in Pe:A:V in bulk materials, Gc:P:T 1-2 mm and with granulometry of 0.6-1 mm. The highest number of spores (20 spores g(-1) dry growing medium) was obtained in Pe:A:V in bulk (p 5.0.05). Growing media with particle size <0.6 mm and 0.6-1 mm positively favored the response variables of the host plant (p 5.0.05). The micromorphological study showed that the spores are related to the components Gc:P:T and reside in the rough surface of the fractured vesicles of tezontle (volcanic residue). Growing medium of Gc:T:P (1-2 mm) is recommended as a substitute of Pe:A:V in bulk materials for the production of Gi gigantea.
ISSN: 1405-3195



Referencia bibliográfica: 10 de 76
Título: DYNAMIC SITE INDEX EQUATIONS FOR Tectona grandis AT CAMPECHE, MEXICO
Autores: Tamarit- Urías, Juan C.; De los Santos-Posadas, Héctor M.; Aldrete, Arnulfo; Valdez-Lazalde, José R.; Ramírez-Maldonado, Hugo; Guerra-De la Cruz, Vidal
Revista: AGROCIENCIA, 48 (2):225-238; FEB-MAR 2014
Idioma: Inglés, Español
Resumen: A dominant height growth model and corresponding site index expression, allows estimating the productivity of forests stands and helps define the silvicultural management regime. The aim of this study was to develop, using data from permanent plots, a base-age invariant growth model for dominant height for Tectona grandis L. f. (teak) plantations at Campeche, Mexico. The base growth models used were those of Korf, Chapman-Richards and Hossfeld IV, which were reformulated as generalized algebraic difference equations to define the best site index structures. They were fitted under least squares with a data structure of non-overlapping pairs. To estimate the dominant height growth and classify plantation productivity, the dynamic equation type Chapman-Richards was selected based on the goodness of fit and similarity between the pattern of growth curves and observed trends. To improve the accuracy of the estimates this equation was fitted as a mixed effects model, correcting for heteroscedasticity and autocorrelation. The selected model is flexible and describes a pattern of polymorphic curves with multiple asymptotes, desirable characteristic to model a wide variety of growth patterns. Three specific growth patterns for the analyzed planting sites were detected.
ISSN: 1405-3195

AGRICULTURA, CIENCIA ANIMAL Y DE LA LECHE

JOURNAL OF DAIRY SCIENCE
Referencia bibliográfica: 11 de 76
Título: Estimation of genetic parameters for productive life, reproduction, and milk-production traits in US dairy goats
Autores: Castañeda-Bustos, V. J.; Montaldo, H. H.; Torres-Hernández, G.; Pérez-Elizalde, S.; Valencia-Posadas, M.; Hernández-Mendo, O.; Shepard, L.
Revista: JOURNAL OF DAIRY SCIENCE, 97 (4):2462-2473, APR 2014
Idioma: Inglés
Resumen: Heritabilities and correlations for milk yield (MY), fat yield (FY), protein yield (PY), combined fat and protein yield (FPY), fat percentage (F%), protein percentage (P%), age at first kidding (AFK), interval between the first and second kidding (KI), and real and functional productive life at 72 mo (FPL72) of 33,725 US dairy goats, were estimated using animal models. Productive life was defined as the total days in production until 72 mo of age (PL72) for goats having the opportunity to express the trait. Functional productive life was obtained by correcting PL72 for MY, FY, PY, and final type score (FS). Six selection indexes were used, including or excluding PL72, with 6 groups of different economic weights, to estimate the responses to selection considering MY, FY, PY, and PL72 as selection criteria. The main criteria that determined the culling of a goat from the herd were low FS, MY, and FY per lactation. Heritability estimates were 0.22, 0.17, 0.37, 0.37, 0.38, 0.39, 0.54, 0.64, 0.09, and 0.16 for PL72, FPL72, MY, FY, PY, FPY, F%, P%, KI, and AFK, respectively. Most genetic correlations between the evaluated traits and PL72 or FPL72 were positive, except for F% (-0.04 and -0.06, respectively), P% (-0.002 and -0.03, respectively), and AFK (-0.03 and -0.01, respectively). The highest genetic correlations were between FPL72 and MY (0.39) and between PL72 and MY (0.33). Most phenotypic correlations between the traits evaluated and FPL72 and PL72 were positive (>0.23 and >0.26, respectively), except for F% (-0.004 and -0.02, respectively), P% (-0.05 and -0.02), KI (-0.01 and -0.07), and AFK (-0.08 and -0.08). The direct selection for PL72 increased it by 102.28 d per generation. The use of MY, FY, PY, KI, or AFK as selection criteria increased PL72 by 39.21, 27.33, 35.90, -8.28, or 2.77 d per generation, respectively. The inclusion of PL72 as selection criterion increased the expected response per generation from 0.15 to 17.35% in all selection indices studied.
ISSN: 0022-0302

JOURNAL OF ANIMAL BREEDING AND GENETICS
Referencia bibliográfica: 12 de 76
Título: Model averaging for genome-enabled prediction with reproducing kernel Hilbert spaces: a case study with pig litter size and wheat yield
Autores: Tusell, L.; Pérez-Rodríguez, P.; Forni, S.; Gianola, D.
Revista: JOURNAL OF ANIMAL BREEDING AND GENETICS, 131 (2):105-115, APR 2014
Idioma: Inglés
Resumen: Predictive ability of yet-to-be observed litter size (pig) grain yield (wheat) sources of several reproducing kernel Hilbert spaces (RKHS) regression models combining different number of Gaussian or t kernels was evaluated. Predictive performance was assessed as the average (over 50 replicates) predictive correlation in the testing set. Predictions from these models were combined using three different types of model averaging: (i) mean of predicted phenotypes obtained in each model, (ii) weighted average using mean squared error as weight or (iii) using the marginal likelihood as weight. (ii) and (iii) were obtained in a validation set with 5% of the data. Phenotypes consisted of 2598, 1604 and 1879 average litter size sources from three commercial pig lines and wheat grain yield of 599 lines evaluated in four macro-environments. SNPs from the PorcineSNP60 BeadChip and 1447 DArT markers were used as predictors for the pig and wheat data analyses, respectively. Gaussian and univariate t kernels led to same predictive performance. Multikernel RKHS regression models overcame shortcomings of single kernel models (increasing the predictive correlation of RKHS models by 0.05 where 3 Gaussian or t kernels were fitted in the RKHS models simultaneously). None of the proposed averaging strategies improved the predictive correlations attained with single models using multiple kernel fitting.
ISSN: 0931-2668


POULTRY SCIENCE
Referencia bibliográfica: 13 de 76
Título: Effects of distance and barriers between resources on bone and tendon strength and productive performance of broiler chickens
Autores: Ruiz-Feria, C. A.; Arroyo-Villegas, J. J.; Pro-Martínez, A.; Bautista-Ortega, J.; Cortes-Cuevas, A.; Narciso-Gaytán, C.; Hernández-Cazares, A.; Gallegos-Sánchez, J.
Revista: POULTRY SCIENCE, 93 (7):1608-1617, JUL 2014.
Idioma: Inglés
Resumen: Lameness or leg weakness is becoming an important problem in broilers selected for rapid growth, and although the causes are not known, sedentary behavior could be a cause. Two experiments were conducted to study the effects of distance and the presence of ramps between resources (feed and water) on bone and tendon strength, ability to stand, and productive performance. In experiment 1, straight run Ross 708 chicks (n = 1,260) were randomly assigned to 1 of 3 treatments: 1.0, 3.3, or 6.6 m between resources (6 pen replicates/treatment). In experiment 2, Cobb 500 male chicks (n = 864) were randomly assigned to 1 of 4 treatments (2 x 2 factorial, 4 pen replications/treatment) consisting of 2 distances (3 or 8 m) with (WR) or without (NR) a ramp (a triangular prism 31 cm high and 132 cm wide at the base). At d 21, 45, and 56 (experiment 1), or at d 28, 35, 42, and 49 (experiment 2), birds were weighed, killed, and tibias collected to measure breaking strength (BBS), and abdominal fat (AbF) content. At d 49 (experiment 2), calcaneus ten-dons were also collected to measure breaking strength (TBS). Foot pad lesions and latency to lie (LTL) were determined before killing the birds. In experiment 1, distance did not affect BBS, LTL, foot pad lesions, or BW, but at d 49, birds in the 6.6 m treatment had lower AbF than birds in the other treatments. In experiment 2 at d 49, birds in the 8 m treatment tended to have a higher BBS than birds in the 3 m treatment (P = 0.09), whereas WR birds had lower tendon breaking strength than NR birds (P < 0.01); however, LTL was highest in 8-m NR birds. Final BW was not affected by distance, but birds in the NR group were heavier than birds in the WR group. Furthermore, AbF was lower in 8 m than in 3 m birds. Our results suggest that longer distances between resources have limited effects on bone strength, but increase the LTL, and may change feeding patterns and carcass characteristics, as evidenced by the lower AbF content. Ramps or inclination affected tendon breaking strength.
ISSN: 0032-5791
eISSN: 1525-3171


REVISTA MVZ CORDOBA
Referencia bibliográfica:  14 de 76
Título: Validation of models with constant bias: an applied approach.
Autores: Medina-Peralta, Salvador; Vargas-Villamil, Luis; Navarro A, Jorge; Avendaño R, Leonel; Colorado M, Luis; Arjona-Suarez, Enrique; Mendoza-Martínez, German
Revista: REVISTA MVZ CORDOBA, 19 (2):4099-4108; MAY-AUG 2014
Idioma: Inglés
Resumen: Objective. This paper presents extensions to the statistical validation method based on the procedure of Freese when a model shows constant bias (CB) in its predictions and illustrate the method with data from a new mechanistic model that predict weight gain in cattle. Materials and methods. The extensions were the hypothesis tests and maximum anticipated error for the alternative approach, and the confidence interval for a quantile of the distribution of errors. Results. The model evaluated showed CB, once the CB is removed and with a confidence level of 95%, the magnitude of the error does not exceed 0.575 kg. Therefore, the validated model can be used to predict the daily weight gain of cattle, although it will require an adjustment in its structure based on the presence of CB to increase the accuracy of its forecasts. Conclusions. The confidence interval for the 1-a quantile of the distribution of errors after correcting the constant bias, allows determining the top limit for the magnitude of the error of prediction and use it to evaluate the evolution of the model in the forecasting of the system. The confidence interval approach to validate a model is more informative than the hypothesis tests for the same purpose.
ISSN: 0122-0268


Referencia bibliográfica:  15 de 76
Título: Evaluation of the nutritive value of sugarcane residues inoculated with fungus Fomes sp
Autores: Olivera D, Alex; Aranda, Emilio, I; Ramos J, Jesús; Vargas V, Luis;
Zaldivar C, Juan; Mendoza M, German
Revista: REVISTA MVZ CORDOBA, 19 (2):4047-4058; MAY-AUG 2014
Idioma: Inglés, español
Resumen: Objective. Improve the nutritional value of mechanized sugarcane residues inoculating the fungus Fomes sp. EUM1. Materials and methods. The fungus Fomes was inoculated according to a 0, 0.1, 0.2, and 0.3% (w/v) treatment and incubated at a temperature of 35 degrees C for 7, 10 and 13 days. It was obtained DM, OM, CP, ash, NDF and ADF and the effective degradation of DM, NDF and ADF, with an experimental factorial design of 3X3 and a completely randomized design. The factors were growing days in an Erlenmeyer flask (7, 10, and 13) and inoculum percentage (0.1, 0.2 and 0.3). The data were analyzed with the SAS statistical package. Results. Statistical significance was found in the interaction of the fungus growing days by percentage of inoculum, in the variables: DM, CP and pH. The NDF and ADF factor differed in the percentage of inoculum. Effective degradation showed significant for the same type of interaction in all the variables studied. Conclusions. The inoculation of the fungus increased ADF degradation by only 0.2% of the inoculum percentage, without any effect on effective degradation due to the use of soluble fractions at the beginning of the incubation. It is considered that the degradation occurs in stages that are important to consider for determining treatments to maximize the beneficial effects of the fungus in terms of ruminant nutrition.
ISSN: 0122-0268


REVISTA MEXICANA DE CIENCIAS PECUARIAS
Referencia bibliográfica:  16 DE 76
Título: Herbage yield and quality of orchard grass (Dactylis glomerata L.), under different grazing frequencies and intensities.
Autores: Villareal González, Jorge Armando; Hernández Garay, Alfonso; Martínez Hernández, Pedro Arturo; Guerrero Rodríguez, Juan de Dios; Velasco Zebadua, Ma. Eugenia
Revista: REVISTA MEXICANA DE CIENCIAS PECUARIAS, 5 (2):231-245; APR-JUN 2014
Idioma: Inglés
Resumen: The aim of this experiment was to study the performance of Orchard grass (Dactylis glomerata L.) based on herbage yield and quality under different grazing management. Three frequencies (2, 3 and 4 wk in spring and summer and 4, 5 and 6 wk in fall) and two grazing intensities (hard: 3 to 5 cm and lax: 6 to 8 cm of residual sward height), in a randomized block design with three replicates, distributed in a 2 x 3 factorial arrangement. Cumulative herbage yield (CHY), net herbage accumulation rate (NHAR), morphological composition and herbage quality were evaluated. The highest CHY and average NHAR were Referencia bibliográfica: ed with hard grazing every 4 and 6 wk. The highest seasonal herbage yield (7,844 kg DM ha(-1)) and NHAR (107 kg DM ha(-1) d(-1)) were observed during summer with hard grazing every 4 wk (P<0.05). There were not statistical differences in herbage yield and NHAR during spring between grazing frequencies. In fall, 5 wk grazing frequency was higher than 4 wk (P<0.05), but it was similar to 6 wk (P>0.05). Across all seasons, hard grazing gave higher forage yield than lax grazing, being different in spring and summer (P<0.05). In overall, total protein and in vitro dry matter digestibility tended to decrease as grazing interval increased, being on average 20 and 65 %, respectively. It was concluded that to obtain the highest herbage yield and quality, orchard grass must be grazed hard every 4 wk in spring-summer and every 5 wk in fall.
ISSN: 2007-1124


Referencia bibliográfica: 17 de 76
Título: Monosporic strains of Metarhizium anisopliae and its pathogenicity to Galleria mellonella in Tabasco, Mexico
Autores: Torres de la Cruz, Magdiel; Cortez Madrigal, Hipólito; Ortiz García, Carlos Fredy; Cappello García, Silvia; Pérez de la Cruz, Manuel
Revista: REVISTA MEXICANA DE CIENCIAS PECUARIAS, 5 (2):171-180; APR-JUN 2014
Idioma: Inglés
Resumen: "Greater wax moth" Galleria mellonella L. (Lepidoptera: Pyralidae) is occasionally found in beehives and is the main pest of stored wax. The objective of the present study was to evaluate the pathogenicity of native monosporic strains of M. anisopliae against G. mellonella larvae. Four polysporic indigenous isolates were used (MaA1, MaA2, MaA3, MaA4). Ten monosporic strains were obtained from each polysporic isolate. Thus, a total of 40 strains was obtained and used for the pathogenicity assay. Monosporic strains were formed into four groups based on parental polysporic isolates. Statistical analysis applied separately to each of the four groups of monosporic strains showed significant differences in G. mellonella mortality. The more pathogenic strains were MaA4(5), MaA1(4) and MaA3(7), with mortality of 100.0, 88.9 and 83.3 %, respectively. The results indicate wide intra-specific variability of monosporic strains of M. anisopliae in terms of their pathogenicity to larvae of G. mellonella. They also demonstrate the utility of monosporic strains and their pathogenic characterization for selection of isolates with outstanding features; as well as, the potential of the studied fungus for development of bioinsecticides against "greater wax moth" G. mellonella.
ISSN: 2007-1124





Referencia bibliográfica: 18 de 76
Título: Growth analysis of maralfalfa grass (Pennisetum sp.) in a warm humid climate
Autores: Miguel Calzada-Marín, Jesús; Francisco Enríquez-Quiroz, Javier; Hernández-Garay, Alfonso; Ortega-Jiménez, Eusebio; Mendoza-Pedroza, Sergio I.
Revista: REVISTA MEXICANA DE CIENCIAS PECUARIAS, 5 (2):247-260; APR-JUN 2014
Idioma: Inglés
Resumen: The objective of this experiment was to conduct growth analysis on "Maralfalfa" grass (Pennisetum sp.) from planting to determine the optimal time to harvest. The plant morphology (MP), growth rate (TC), height, radiation interception (RI), leaf / stem ratio (H: T), leaf/no leaf (H: NH) and the biomass accumulation, were evaluated at intervals of 15 d during a 180 d period, except for the first two samples that were sampled monthly. Data were analyzed using the GLM procedure of SAS, under an experimental design of randomized blocks, with repeated measures over time, with three replicates. The MP varied significantly (P<0.01) across different physiological states. The maximum biomass production and CT was reached at 151 d after planting with 37,297 kg DM ha(-1) and 247 kg DM ha(-1) d(-1), respectively. It also, Referencia bibliográfica: ed the highest percentage of RI (97.4), with a height of 2.3 m, approximately. Biomass production of stems and dead material production Maralfalfa grass are correlated positively with the increasing age of the plant. The maximum growth rate coincides with the maximum production of leaves and stems and increased production of total biomass.
ISSN: 2007-1124

Referencia bibliográfica: 19 de 76
Título: Stover and grain production from maize landraces under rainfed conditions in the highland plateau of Libres-Serdan, Puebla, Mexico
Autores: Muñoz-Tláhuac, Faviola; de Dios Guerrero-Rodríguez, Juan; Antonio López, Pedro; Gil-Muñoz, Abel; López-Sánchez, Higinio; Ortiz-Torres, Enrique; Arahon Hernández-Guzmán, J.; Taboada-Gaytán, Oswaldo; Vargas-López, Samuel; Valadez-Ramírez, Mario
Revista: REVISTA MEXICANA DE CIENCIAS PECUARIAS, 4 (4):515-530; OCT-DEC 2013
Idioma: Inglés
Resumen: Maize stover is an important by-product for several ruminant species raised by small crop holders practicing agriculture under rainfed conditions, especially in the highland plateau in central Mexico known as the Mexican Altiplano. In such areas, no dual-purpose varieties (grain and stover) have been developed, for this reason, grain and stover production of local maize varieties were evaluated in the valleys of Puebla and Tlaxcala, Mexico. Seeds of native maize populations were gathered from two regions of the states of Puebla-Tlaxcala: Libres-Mazapiltepec-Huamantla (L-M-H) and Serdan-Tlachichuca-Guadalupe Victoria (S-T-GV). For each region 144 varieties, including four commercial controls were evaluated in two locations under a simple 12x12 lattice design with two replicates. The traits measured were stover, leaf and stalk production, height of plant and ear, days to silking and grain yield. An analysis of variance was carried out for each experiment and for each region a combined analysis was performed followed by a canonical analysis. Each region had a wide value interval (P<0.0001) for stover and grain production with local varieties ranging in yield from low to high. A few local varieties were found which had both high stover and grain yields (Pd 0.05). The improved commercial control varieties tested had lower yields for stover and grain than the local varieties which had greater yield for both traits.
ISSN: 2007-1124


Referencia bibliográfica:  20 de 76
Título: Levels of calcium and available phosphorus in laying hens during 48 weeks
Autores: Gutiérrez Arenas, Diana Angélica; Cuca García, Juan Manuel; Pro Martínez, Arturo; Becerril Pérez, Carlos Miguel; Figueroa Velasco, José Luis
Revista: REVISTA MEXICANA DE CIENCIAS PECUARIAS, 4 (4):435-446; OCT-DEC 2013
Idioma: Inglés
Resumen: An experiment was conducted to evaluate levels of calcium (Ca) and available phosphorus (AP) in hens. For this study 300 Leghorn Hy-line W36 hens were used. Five treatments were evaluated, level of Ca and AP in the diet: T1, 4.34 and 0.18%; T2, 4.34 and 0.23%; T3, 4.62 and 0.18%; T4, 4.62 and 0.23% and T5, 3.25 and 0.25% (control). The experiment lasted 48 wk. It was measured feed, Ca and AP consumption, number of eggs, egg mass, feed conversion, egg weight, specific gravity and percentage of eggshell. In feed consumption, number of eggs, egg mass, feed conversion and egg weight, there were no differences among treatments (P>0.05). Higher consumption of calcium (P<0.05) was observed in the hens of T3 and T4 (4.80 and 4.81 g(-1) hen(-1)); in consumption of available phosphorus the hens of T5 consumed more (P<0.05) than the others (0.258 g(-1) hen(-1)). For specific gravity with T1, T3 and T4 (1.0837, 1.0834 and 1.0841) there were better results (P<0.05). In percentage of eggshell were observed better results for T1, T2, T3 y T4 (P<0.05). It is concluded that the concentration of Ca and Pd suggested by the NRC (1994) are not sufficient for maximum eggshell quality.
ISSN: 2007-1124


Referencia bibliográfica:  21 de 76
Título: Environmental factors influencing growth variables from birth to weaning in Hampshire lambs
Autores: Ramírez-Tello, José A.; Torres-Hernández, Glafiro; de la Cruz-Colín, Lino; Ochoa-Cordero, Manuel A.; Suarez-Espinosa, Javier
Revista: REVISTA MEXICANA DE CIENCIAS PECUARIAS, 4 (1):117-125; JAN-MAR 2013
Idioma: Inglés
Resumen: The objective of this work was to evaluate the effects of sex of lamb (SL: male, female), type of birth (TB: single, twin), age of dam (AD: 2 to 7 years and older), farm (F: 10 units), and sire nested within farm, as well as first-order interactions that influence the variation of birth weight (BW), adjusted weaning weight (AWW) and average preweaning daily weight gain (ADG) of Hampshire lambs from 10 farms in Hidalgo, Mexico. A data base from 2006 to 2009 with 998 observations for BW and 933 for AWW and ADG was analyzed. Feeding of parents and lambs was based on grains, alfalfa, oats hay, and minerals. The statistical analysis was carried out with the GLM procedure of SAS. Overall means were BW: 5.1 +/- 0.9 kg, AWW: 32.3 +/- 5.4 kg, and ADG: 0.300 +/- 0.055 kg. Significant effects (P<0.01) due to sex of lamb were observed in the three variables analyzed, males had the highest averages; type of birth (P<0.01) only on BW and AWW, the highest averages were obtained by lambs of single birth; age of dam on BW (P<0.01) and AWW and ADG (P<0.05), lambs born to dams from 3 to 5 and 7 years and older had the highest averages in the three variables. Sire nested within farm had a significant effect (P<0.01) on AWW and ADG. It is concluded that there are important environmental factors influencing pre-weaning traits of Hampshire lambs, useful information that must be considered for management purposes and genetic improvement in these farms.
ISSN: 2007-1124



AGRONOMÍA
THEORETICAL AND APPLIED GENETICS
Referencia bibliográfica: 22 de 76
Título: A reaction norm model for genomic selection using high-dimensional genomic and environmental data
Autores: Jarquín, Diego; Crossa, José; Lacaze, Xavier; Du Cheyron, Philippe; Daucourt, Joelle; Lorgeou, Josiane; Piraux, Francis; Guerreiro, Laurent; Pérez, Paulino; Calus, Mario; Burgueño, Juan; de los Campos, Gustavo
Revista: THEORETICAL AND APPLIED GENETICS, 127 (3):595-607, MAR 2014
Idioma: Inglés
Resumen: Key message New methods that incorporate the main and interaction effects of high-dimensional markers and of high-dimensional environmental covariates gave increased prediction accuracy of grain yield in wheat across and within environments. In most agricultural crops the effects of genes on traits are modulated by environmental conditions, leading to genetic by environmental interaction (G x E). Modern genotyping technologies allow characterizing genomes in great detail and modern information systems can generate large volumes of environmental data. In principle, G x E can be accounted for using interactions between markers and environmental covariates (ECs). However, when genotypic and environmental information is high dimensional, modeling all possible interactions explicitly becomes infeasible. In this article we show how to model interactions between high-dimensional sets of markers and ECs using covariance functions. The model presented here consists of (random) reaction norm where the genetic and environmental gradients are described as linear functions of markers and of ECs, respectively. We assessed the proposed method using data from Arvalis, consisting of 139 wheat lines genotyped with 2,395 SNPs and evaluated for grain yield over 8 years and various locations within northern France. A total of 68 ECs, defined based on five phases of the phenology of the crop, were used in the analysis. Interaction terms accounted for a sizable proportion (16 %) of the within-environment yield variance, and the prediction accuracy of models including interaction terms was substantially higher (17-34 %) than that of models based on main effects only. Breeding for target environmental conditions has become a central priority of most breeding programs. Methods, like the one presented here, that can capitalize upon the wealth of genomic and environmental information available, will become increasingly important.
ISSN: 0040-5752



POSTHARVEST BIOLOGY AND TECHNOLOGY
Referencia bibliográfica: 23 de 76
Título: Effect of ethylene degreening on the development of postharvest penicillium molds and fruit quality of early season citrus fruit
Autores: Moscoso-Ramírez, Pedro A.; Palou, Lluis
Revista: POSTHARVEST BIOLOGY AND TECHNOLOGY, 91 1- 8 MAY 2014,
Idioma: Inglés
Resumen: The effect of commercial degreening with ethylene gas on fruit susceptibility and quality and development of postharvest green (GM) and blue (BM) molds on early season citrus fruit was investigated. Each cultivar was harvested with different peel color indexes (CI). Fruit were exposed for 3d to 2 mu LL-1 ethylene at 21 degrees C and 95-100% RH before or after artificial inoculation with Penicillium digitatum or Penicillium italicum. Control fruit were kept at the same environmental conditions without ethylene. Fruit were stored at either 20 degrees C for 7 d or 5 degrees C for 14 d and disease incidence (%) and severity (lesion diameter) were assessed. No significant effect of commercial degreening was observed on fruit susceptibility to both GM and BM on citrus cultivars inoculated after degreening. Likewise, no significant effect was observed on disease incidence on citrus cultivars inoculated before degreening and stored at either 20 degrees C for 7 d or 5 degrees C for 14 d. In contrast, in cultivars like 'Clemenules' mandarins and 'Navelina' oranges, degreening significantly increased the severity on fruit with higher initial CI (-3.6 and 1.7, respectively). GM and BM severity on degreened and control 'Clemenules' mandarins incubated at 20 degrees C for 7 d was 146 and 118 mm and 56 and 46 mm, respectively. In general, commercial degreening did not significantly affect external and internal quality attributes of citrus cultivars. Commercial degreening after inoculation of less green (more mature) fruit showed a trend to increase mold severity, presumably through an aging effect (acceleration of peel senescence).
ISSN: 0925-5214


EUROPEAN JOURNAL OF PLANT PATHOLOGY
Referencia bibliográfica: 24 de 76
Título: Preventive and curative activity of postharvest potassium silicate treatments to control green and blue molds on orange fruit
Autores: Moscoso-Ramírez, Pedro A.; Palou, Lluis
Revista: EUROPEAN JOURNAL OF PLANT PATHOLOGY, 138 (4):721-732, APR 2014
Idioma: Inglés
Resumen: Preventive and curative antifungal activities of postharvest treatments with potassium silicate (PSi) against green (GM) and blue (BM) molds were evaluated on oranges (cvs. 'Valencia' or 'Lanelate') artificially inoculated in rind wounds with Penicillium digitatum and P. italicum, respectively. The most effective PSi concentration, the effect of fungal inoculum concentration, and the influence of temporal and spatial factors on antifungal activity were assessed in in vivo primary screenings. After 6 days of incubation at 20 A degrees C, significant preventive (treatment before fungal inoculation) and curative (treatment after inoculation) activities against GM and BM were observed with Psi at 90 mM (GM and BM incidence reductions of 23 and 52 %, and 23 and 40 %, respectively). In preventive tests, the effectiveness of PSi was influenced by inoculum concentration (10(3), 10(4), 10(5), or 10(6) spores ml(-1)), but not by the distance between treatment and inoculation sites (10, 20 or 30 mm). PSi applied about 2 h before inoculation showed higher preventive activity than applied before 24, 48 or 96 h. In order to determine the best dip treatment conditions, PSi at 90 mM was tested at 20 or 50 A degrees C for 60 or 150 s in small-scale trials with 'Lanelate' oranges artificially inoculated before or after the treatment and incubated for 7 days at 20 A degrees C. Dips at 20 A degrees C for 60 s were selected and subsequently applied on inoculated 'Valencia' oranges stored at 5 A degrees C and 90 % RH for up to 6 weeks. Curative postharvest dips effectively reduced the incidence and severity of both GM and BM during cold storage, while preventive dips significantly reduced the severity but not the incidence. Overall, postharvest PSi treatments showed potential as a new tool to be part of non-polluting strategies to control penicillium decay of citrus fruit.
ISSN: 0929-1873


Referencia bibliográfica: 25 de 76
Título: Effect of Avocado sunblotch viroid (ASBVd) on avocado yield in Michoacan, Mexico
Autores: Saucedo-Carabez, J. R.; Teliz-Ortiz, D.; Ochoa-Ascencio, S.; Ochoa-Martínez, D.; Vallejo-Pérez, M. R.; Beltrán-Pena, H.
Revista: EUROPEAN JOURNAL OF PLANT PATHOLOGY, 138 (4):799-805, APR 2014
Idioma: Inglés
Resumen: The total yield of cv. Hass and Mendez avocado trees was evaluated in Grove 1 in Uruapan county: four trees were sunblotch-infected, four asymptomatic (molecularly positive), and four healthy. A further four healthy and four symptomatic trees were evaluated in Grove 2 in Tingambato county. There was a significant 75 % reduction in the total Hass fruit weight from symptomatic trees in Grove 1 (213 kg vs 751 kg in healthy trees) and a 52 % reduction (124 kg vs 255 kg) in Grove 2 (Tukey, p = 0.05). This reduction was more severe in Mendez: 83 % in Grove 1 (183 kg vs 1,053 kg) and 76 % in Grove 2 (82 kg vs 340 kg). Yield of asymptomatic trees was reduced to 58 % in Mendez and 30 % in Hass. The average weight of 100 fruits was reduced by 13-28 % in Hass and 20-27 % in Mendez in Groves 2 and 1 respectively. The equatorial diameter of 100 symptomatic fruits was 8 % lower in Hass in both groves, and 20-28 % lower in Mendez. The polar diameter decreased by 8-10 % in Hass and 10-11 % in Mendez. The incidence of symptomatic fruits was 46-62 % in Hass and 20-28 % in Mendez. Yield of ASBVd symptomatic Hass and Mendez trees was significantly reduced and fruit morphology negatively affected.
ISSN: 0929-1873



AMERICAN JOURNAL OF POTATO RESEARCH
Referencia bibliográfica: 26 de 76
Título: Excess Supply and Price Volatility in the Mexican Potato Market: A Decision Making Framework.
Autores: Alberto García-Salazar, J.; Skaggs, Rhonda K.; Crawford, Terry L.
Revista: AMERICAN JOURNAL OF POTATO RESEARCH, 91 (3):291-303, JUN 2014
Idioma: Inglés
Resumen: The objective of this research was to use a spatial and inter-temporal equilibrium model to develop a plan to assist the Mexican potato production sector in moderating extreme swings in potato prices. Results indicate that excess supplies of potatoes in some months could be eliminated with a storage policy or if changes in irrigated potato production were implemented. The storage policy and changes in production practices would reduce price volatility and increase producer incomes; however, a storage policy cannot be recommended due to the large capital investment required for storage infrastructure development. Seasonal production planning would increase producer incomes by more than 1,500 million pesos and not require extensive capital investment.
ISSN: 1099-209X




REVISTA FITOTECNIA MEXICANA
Referencia bibliográfica: 27 de 76
Título: EFFECT OF THE GLUCORAFANO ISOLATED FROM BROCCOLI FLORETS ON THE GERMINATION OF Colletotrichum gloeosporioides SPORES
Autores: Lara-Viveros, Francisco M.; Nieto-Angel, Daniel; Nava-Díaz, Cristian; Gutiérrez-Alonso, Gabriel; Ayala-Garay, Oscar J.; Alfonso Aguilar-Pérez, L.; Martínez-Damián, Teresa
Revista: REVISTA FITOTECNIA MEXICANA, 37 (2):141-147; APR-JUN 2014
Idioma: Español
Resumen: Anthracnose caused by Colletotrichum gloeosporioides, is the most important postharvest disease in mango (Mangifera indica L.) producing areas worldwide, and the strategy most used to control this disease is the pre-and post-harvest treatment with fungicides, but their use is increasingly restricted due to public awareness of hazardous residues in the fruits. Glucosinolates are natural products containing nitrogen and sulfur, mainly found in plants from the order Caparales, and their antimicrobial activity has been shown elsewhere. For this work we collected mango fruits with anthracnose symptoms, and from them the fungus Colletotrichum gloeosporioides was isolated and identified. Pathogen spores were placed on PDA containing different concentrations of glucoraphane (1.54, 0.92, 0.46, 0.15, 0.02 y 0 mu g mu L-1) previously isolated from broccoli (Brassica oleracea cv. 'Italica') florets. We evaluated spore germination until control treatment showed its highest percentage of germination. After 10 h of evaluation the concentrations of 1.54 and 0.92 mu g mu L-1, caused complete inhibition of spore germination. The median lethal concentration was 0.65 mu g mu L-1 Based on these results glucoraphane represents a friendly alternative for consumers, because of its capability to control anthracnose in harvested mango fruits.
ISSN: 0187-7380


Referencia bibliográfica:  28 of 76
Título: PHENOLOGICAL PREDICTION OF POTATO CROP BY MEANS OF THERMAL TIME
Autores: Flores-Magdaleno, Héctor; Flores-Gallardo, Hilario; Ojeda-Bustamante, Waldo
Revista: REVISTA FITOTECNIA MEXICANA, 37 (2):149-157; APR-JUN 2014
Idioma: Español
Resumen: The objective of this research was to evaluate three methods to predict potato crop (Solanum tuberosum L.) phenology by means of thermal time, which were applied on 15 commercial plots sowed with the variety 'Alpha' in northern Sinaloa, Mexico. The compared methods were: average temperature, degree days (D) and potato days (P-days), all of them calculated with data obtained by field monitoring of each phonological stage during two crop seasons, Autumn-Winter seasons 2005-2006 and 2006-2007. Results showed that the best method to predict the phenology of this potato variety by means of thermal time was the P-days technique because it produced the lowest values of variation coefficient with 0.07 and of standard deviation with 18.03, for all the analyzed phenology stages. To compare the errors in thermal requirements obtained with each method in the plots, other plots were used for validation, and so it was confirmed that the P-days method showed the smallest errors, with 3.6 and 3.2 % for the root mean square error RMSE and the mean absolute error MAE, respectively.
ISSN: 0187-7380


Referencia bibliográfica:  29 of 76
Título: COMPARISON OF Q(ST) vs.F-ST IN Pinus hartwegii LINDL. NATURAL POPULATIONS
Autores: Viveros-Viveros, Héctor; Sáenz-Romero, Cuauhtémoc; Jesús Vargas-Hernández, J.; Tapia-Olivares, Blanca L.; López-Upton, Javier; Santacruz-Varela, Amalio; Beaulieu, Jean
Revista: REVISTA FITOTECNIA MEXICANA, 37 (2):117-127; APR-JUN 2014
Idioma: Español
Resumen: Due to climatic change, it might be expected that in the next years, the habitat of Pinus hartwegii Lindl. could sharply decrease. It is then convenient to establish conservation strategies that diminish or counteract the effects of the climatic change. However, a first step in establishing conservation measures is to quantify the adaptive variation of the species and the evolutionary forces that may have shaped it. To understand the evolutionary forces acting on P. hartwegii populations, patterns of genetic variation, assessed through quantitative traits and
isozymes, were compared in 12 natural populations along an altitudinal transect in Michoacan, Mexico, by estimation of Q(ST) and F-ST statistics. Although significant genetic differentiation among populations was found for quantitative traits and isozymes, most of the quantitative traits showed a strong clinal pattern of variation associated with site elevation, but not for isozymes. Average Q(ST) value (0.200) was higher than F-ST value (0.127), but they were not significantly different. Results indicate that natural selection, imposed by the altitudinal environmental gradient, is acting on quantitative traits, while other evolutionary forces, like genetic drift and gene flow, are acting on isozymes. The similarity of Q(ST) and F-ST values could be attributed to the joint action of natural selection and genetic drift.
ISSN: 0187-7380

Referencia bibliográfica: 30 de 76
Título: VARIATION IN CHARACTERISTICS OF AGRICULTURAL INTEREST WITHIN A NATIVE TOMATO (Solanum lycopersicum L.) POPULATION
Autores: Sanjuán-Lara, Felipe; Ramírez-Vallejo, Porfirio; Sánchez-García, Prometeo; Livera-Muñoz, Manuel; Sandoval-Villa, Manuel; Carrillo-Rodríguez, José C.; Perales-Segovia, Catarino
Revista: REVISTA FITOTECNIA MEXICANA, 37 (2):159-164; APR-JUN 2014
Idioma: Español
Resumen: Mexico is a country with a great diversity of wild tomato (Solanum lycopersicum L.) populations. They have been, however, little studied and so it is necessary to explore and learn their genetic potential as a germ plasm Fuentefor improving productivity, tolerance to drought and salinity, and plant health problems. With the aim of determining genetic variability in 120 tomato families derived from 'Chino', a native population in the state of Puebla, and based on characteristics of agronomic interest, they were planted under greenhouse conditions and characterized 60 d after transplant. The greenhouse was covered with an aphid resistant mesh. Analyses of variance detected differences (P <= 0.05) in all six variables measured. The main component analysis showed that two variables (general grading and stem diameter) described 59.7 % of the morphological variability The graphic representation of the two main components allowed us to identify six family groups, distributed in all four quadrants. Groups I and VI concentrated the families outstanding in stem diameter, plant height, number of fruit clusters, and healthy and uniform plants. Group II included 84 % of the total good families; and Groups II and IV integrated families ranging from regular to bad.
ISSN: 0187-7380


Referencia bibliográfica: 31 de 76
 Título: AGRONOMIC AND MORPHOLOGICAL DIVERSITY OF LOCAL KIDNEY AND BELL PEPPER-SHAPED TOMATOES FROM PUEBLA AND OAXACA, MEXICO
Autores: Bonilla-Barrientos, Olga; Lobato-Ortiz, Ricardo; Jesús García-Zavala, J.; Cruz-Izquierdo, Serafín; Reyes-López, Delfino; Hernández-Leal, Enrique; Hernández-Bautista, Aurelio
Revista: REVISTA FITOTECNIA MEXICANA, 37 (2):129-139; APR-JUN 2014
Idioma: Español
Resumen: Native or landrace tomatoes (Solanum lycopersicum L.) known as "deer eye", "cherry", "kidney" and "pepper-shaped" are widely used in the States of Puebla and Oaxaca, Mexico, where they are cultivated for self-consumption and local commerce. These materials represent an important Fuenteof germplasm for tomato breeding programs. To describe the agronomic and morphological diversity of widely used landrace tomatoes in Puebla and Oaxaca, 40 accessions plus the commercial hybrid 'SUN7705' were evaluated in a randomized complete block design with four replications and five plants per replicate. In order to characterize the morphology and agronomy of these genotypes, 20 traits were measured (plant diameter, height at 95 d, height to the first cluster, distance between clusters, days to flowering of the third cluster, number of flowers of the third cluster, days to maturity of the third cluster, number of fruits of the third cluster, total number of clusters, number of leaves, number of petals, cluster length, total number and total
weight of fruits, average fruit weight, diameter, length and firmness of the fruit, number of locules, and total soluble solids). Variance was calculated through a combined analysis. Most traits showed significant differences (P <= 0.01) among genotypes. A principal component analysis showed that the first two components explained 77.03 % of the variation among collections. Materials with outstanding features in total soluble solids and precocity were identified in some "cherry", "deer eye" and "kidney" type collections, that might be used directly as local varieties or as a Fuenteof germplasm. Bell pepper type tomatoes excelled in fruit size, soluble solids, firmness, with characteristics similar to the control hybrid ('SUN7705'), so they also have potential for being used directly as varieties or Fuenteof germplasm for genetic improvement in "saladette" tomatoes, which are widely used at the national level.
ISSN: 0187-7380

Referencia bibliográfica: 32 de 76
Título: SUGGESTIONS FOR THE STANDARDIZATION OF THE NAMES OF SPANISH SPEAKING AUTHORS
Autores: Bravo-Vinaja, Angel
Revista: REVISTA FITOTECNIA MEXICANA, 37 (1):3-4; JAN-MAR 2014
Idioma: Español
ISSN: 0187-7380

Referencia bibliográfica: 33 de 76
Título: SEED QUALITY EVOLUTION OF Capsicum annuum L. THROUGH DIFFERENT FRUIT DEVELOPMENT STAGES
Autores: Ayala-Villegas, Misael J.; Ayala-Garay, Oscar J.; Aguilar-Rincón, Víctor
H.; Corona-Torres, Tarsicio
Revista: REVISTA FITOTECNIA MEXICANA, 37 (1):79-87; JAN-MAR 2014
Idioma: Español
Resumen: High quality seeds are required in commercial farming to ensure profits. In this research the physical and physiological quality of seeds of Capsicum annuum cvs. de Arbol, Ancho, and Guajillo, was evaluated under  greenhouse conditions in Texcoco (Mexico), trough different fruit development stages, to identify the harvest stage with the best seed quality. Seeds were obtained from fruits harvested at five development stages: (S1) 25 and (S2) 40 d after anthesis; (S3) when fruit started to change color; (S4) when fruit changed completely of color; and (S5) when fruit was fully dried. In addition, seeds were extracted at two postharvest dates: immediately (IE) and 15 d (PE) after fruits were harvesting in each stage. Seed moisture content was 7.6 % in all treatments. The physical (weight of 1000 seeds, volumetric weight) and physiological (germination, vigor) quality variables of the three cvs. of chilli followed a sigmoidal growth curve, and reached their maximum values when extracted from fruits at the S3 stage for the physical quality, and from fruits harvested at the S5 stage for the physiological quality. Seed germination occurred earlier when the seeds were extracted at PE than when extracted at IE, since extraction at PE from fruits harvested at the S3 stage rendered a germination rate of 93.4%, much higher than the 6.7 % rate obtained with seeds extracted from fruits harvested at the El stage. The best physiological quality was obtained from seeds extracted at PE from fruits harvested at the S4 stage for cvs. Ancho and Chile de Arbol, while for cv. Guajillo the best fruit stage was S3.
ISSN: 0187-7380


Referencia bibliográfica: 34 de 76
Título: THE CORN (Zea mays L.) IMPROVED SEED MARKET IN MEXICO. AN ANALYSIS OF THE COMMERCIAL BALANCE BY STATE
Autores: Alberto García-Salazar, J.; Ramírez-Jaspeado, Rocío
Revista: REVISTA FITOTECNIA MEXICANA, 37 (1):69-77; JAN-MAR 2014
Idioma: Español
Resumen: An overview of the market situation of improved maize (Zea mays L.) seeds in Mexico is described here, based on estimation of the consumed quantity for this input. Total consumed quantity was compared with production of improved seed to determine the commercial balance (deficit and surplus) in each corn-producing area. Information collected from every state containing surface production, plant density and yield, as well as production cycles, hydrologic regimes and corn varieties, was used. Results indicate that from 2008 to 2010 the annual average of consumed seed was 160.2 thousand tons, of which 42.5 % was improved seed and the remainder came from local varieties. Annual production of improved seed was 62.5 thousand tons, resulting in a deficit of more than 90 thousand tons. Commercial balance analysis indicates that 26 states have a deficit for improved seed, and the largest deficit occurs in Chiapas, Puebla, Oaxaca, Veracruz and Mexico State, exceeding 10 thousand tons per every state. Since maize productivity depends greatly on the quantity of inputs, improved seed production should be promoted to cover the national deficit, as well as support should be provided to small seed companies to prevent the existence of an imperfect market structure.
ISSN: 0187-7380





Referencia bibliográfica: 35 de 76
Título: DEHYDRINS PATTERNS IN COMMON BEAN EXPOSED TO DROUGHT AND WATERED CONDITIONS
Autores: Claudia Castañeda-Saucedo, M.; Córdova- Téllez, Leobigildo; Tapia-Campos, Ernesto; Delgado-Alvarado, Adriana; González- Hernández, Víctor A.; Santacruz-Varela, Amalio; Loza-Tavere, Herminia; García-de-Los-Santos, Gabino; Vargas-Suarez, Martin
Revista: REVISTA FITOTECNIA MEXICANA, 37 (1):59-68; JAN-MAR 2014
Idioma: Español
Resumen: Drought is a major constraint for common bean (Phaseolus vulgaris L.) production in Mexico. Dehydrins are constitutive or stress-induced proteins related with a protective role of membranes and macromolecules against denaturation, thus preventing loss of their function. In this work, seed production and patterns of dehydrins accumulation in leaves and pods were evaluated in common bean cv. 'Otomi' subjected to drought, as compared with well-irrigated plants. Drought applied at pod formation and seed filling (SF) reduced yield up to 57 %. An antibody against a consensus sequence present in most dehydrins allowed for dehydrin identification. Two dehydrins of 82 and 73 kDA turned up both in leaves and pods throughout all the evaluated conditions. Presumably, both dehydrins are constitutive in the 'Otomi' cultivar. These dehydrins showed higher expression than controls in leaves after 6 d of drought at seedling and SF stages, and in pods 6 d after drought had started at SF. Increased expression might provide better protection during early stages of seedling and seed development. Increments on 63, 36 and 22 kDa dehydrin expression in pods at late SF might coincide with plant developmental programs, which prepare seed for desiccation. Dehydrins of 158, 54, 46, and 41 kDa were detected in pods 10 d after floral opening as a transient response to drought stress in SF. These results indicate dehydrins are relevant during plant development, as well as during drought stress.
ISSN: 0187-7380


Referencia bibliográfica: 36 de 76
Título: GROWTH AND STEM QUALITY OF FREESIA X HYBRIDA UNDER HYDROPONICS
Autores: Miranda-Villagómez, Erika; Alfredo Carrillo-Salazar, J.; Rodríguez-Mendoza, María-de-las-Nieves; Teresa Colinas-León, M.; Livera-Muñoz, Manuel; Araceli Gaytán-Acuna, E.
Revista: REVISTA FITOTECNIA MEXICANA, 37 (1):31-39; JAN-MAR 2014
Idioma: Español
Resumen: Freesia (Freesia x hybrida) is a high-potential cut-flower, but it is almost unknown in Mexico. It tolerates low temperatures and forms flowers in a wide range of colors with a delicate scent. This research evaluated the effect of Steiner solution concentration on growth and flower stem quality of Freesia x hybrida cv. 'Patio' grown in the Valley of Mexico. Plants were derived from 2.5 diameter corms, under hydroponics and 85 %, red shade netting during the Winter season. The experimental design was a factorial combination of four Steiner solution concentrations (25, 50, 75 and 100 %) and two planting dates (September 22nd and October 18th. 2010), under a completely random design. The 100 % Steiner solution (SN) produced the lowest values in plant height (49 cm), floral stem length (37 cm), leaf area per plant (170 cm(2)), SPAD readings (62), spike length (8.5 cm), number of flowers per stem (8), stem thickness (3.6 mm), and in stem, leaf and total dry weight; while the 25% SN produced the highest values in plant height (59.4 cm), SPAD readings (71.7), floral stem length (61 cm), spike length (11 cm), number of flowers per stem (12), stem thickness (5.0 mm) and flower vessel life (12 d). Neither the number of leaves per plant nor the root dry weight were different among treatments. The maximum quantum efficiency of photosystem II (Fm/Fv) was similar in all treatments (P > 0.05), in both planting dates, with an average of 0.81.
ISSN: 0187-7380


BIOLOGÍA
BIOLOGICAL RESEARCH
Referencia bibliográfica: 37 de 76
Título: Seed germination of Agave species as influenced by substrate water potential
Autores: Ramírez- Tobías, Hugo M.; Pena-Valdivia, Cecilia B.; Trejo, Carlos;
Rogelio Aguirre R, J.; Vaquera H, Humberto
Revista: BIOLOGICAL RESEARCH, 47, APR 1 2014
Idioma: Inglés
Resumen: Background: Plants of Agave spp. perform Crassulacean acid metabolism (CAM) and are highly drought-tolerant, but little is known concerning seed germination under low water availability. The aim of this study was to assess the effect of substrate water potential (psi(W)) on seed germination and contrast hydrotime parameters of seven valuable and commercially-important Agave species from different geographical distributions and climatic regions of Mexico. Our hypothesis was that seed germination of Agave species is not affected by low water availability independently of seed biomass and the climate of their distribution area. Results: Seed germination (at 25 degrees C and in the dark) between 85 and 100% for all species occurred within 80-180 h at -0.03 MPa and 250-430 h at -1.0 MPa. Seed germination at -1.5 MPa declined to less than 50% (p < 0.05) for A. asperrima and A. cupreata but did not change significantly for A. americana var. marginata, A. lechuguilla and A. striata, although they showed the lowest mean base water potential (-2.01 to -2.64 MPa). Seed germination of 40% Agave species, from arid and semi-arid climates in this study, was not affected by the lower psi(W). Conclusion: Germination of seeds of Agave species is moderately affected by low water availability, is partially dependent of their ecological distribution, and is independent of seed mass.
ISSN: 0716-9760


BOSQUES
FOREST ECOLOGY AND MANAGEMENT
Referencia bibliográfica: 38 de 76
Título: Comparative genetic responses to climate in the varieties of Pinus ponderosa and Pseudotsuga menziesii: Reforestation
Autores: Rehfeldt, Gerald E.; Jaquish, Barry C.; Saenz-Romero, Cuauhtémoc; Joyce, Dennis G.; Leites, Laura P.; St Clair, J. Bradley; Lopez-Upton, Javier
Revista:  FOREST ECOLOGY AND MANAGEMENT, Vol. 324 pp. 147-157 JUL 15 2014;
 Idioma: Inglés
Resumen: Impacts of climate change on the climatic niche of the sub-specific varieties of Pinus ponderosa and Pseudotsuga menziesii and on the adaptedness of their populations are considered from the viewpoint of reforestation. In using climate projections from an ensemble of 17 general circulation models targeting the decade surrounding 2060, our analyses suggest that a portion of the lands occupied today primarily by castal varieties of each species contain genotypes that should remain suitable for the future climate. A much larger portion, particularly for
varieties occupying inland sites, should require either introduction of better suited species or conversion to better adapted genotypes. Regeneration strategies are considered with the goal of matching growth potential of contemporary populations to the future climate where that potential can be realized. For some lands, natural reproduction should be suitable, but most lands will require forest renewal to maintain forest health, growth, and productivity. Projected impacts also illustrate the urgent need for conservation programs for P. menziesii in Mexico.
ISSN: 0378-1127
eISSN: 1872-7042



Referencia bibliográfica: 39 de 76
Título: Comparative genetic responses to climate in the varieties of Pinus ponderosa and Pseudotsuga menziesii: Clines in growth potential
Autores: Rehfeldt, Gerald E.; Leites, Laura P.; St Clair, J. Bradley; Jaquish, Barry C.; Saenz-Romero, Cuauhtémoc; Lopez-Upton, Javier; Joyce, Dennis G.
Revista:  FOREST ECOLOGY AND MANAGEMENT, Vol. 324 pp.138-146, JUL 15 2014;
Idioma: Inglés
Resumen: Height growth data were assembled from 10 Pinus ponderosa and 17 Pseudotsuga menziesii provenance tests. Data from the disparate studies were scaled according to climate similarities of the provenances to provide single datasets for 781 P. ponderosa and 1193 P. menziesii populations. Mixed effects models were used for two sub-specific varieties of each species to describe dines in growth potential associated with provenance climate while accounting for study effects not eliminated by scaling. Variables related to winter temperatures controlled genetic variation within the varieties of both species. Clines were converted to climatypes by classifying genetic variation, using variation within provenances in relation to the slope of the dine to determine climatype breadth. Climatypes were broader in varieties of P. ponderosa than in P. menziesii and were broader for varieties inhabiting coastal regions of both species than for varieties from interior regions. Projected impacts of climate change on adaptedness used output from an ensemble of 17 general circulation models. Impacts were dependent on dine steepness and climatype breadth but implied that maintaining adaptedness of populations to future climates will require a redistribution of genotypes across forested landscapes.
ISSN: 0378-1127
eISSN: 1872-7042


Referencia bibliográfica: 40 de 76
Título: Comparative genetic responses to climate for the varieties of Pinus ponderosa and Pseudotsuga menziesii: Realized climate niches
Autores: Rehfeldt, Gerald E.; Jaquish, Barry C.; Lopez-Upton, Javier; Saenz-Romero, Cuauhtémoc; St Clair, J. Bradley; Leites, Laura P.; Joyce, Dennis G.
Revista: FOREST ECOLOGY AND MANAGEMENT, Vol. 324 pp. 126-137, JUL 15 2014
Idioma: Inglés
Resumen: The Random Forests classification algorithm was used to predict the occurrence of the realized climate niche for two sub-specific varieties of Pinus ponderosa and three varieties of Pseudotsuga menziesii from presence-absence data in forest inventory ground plots. Analyses were based on ca. 271,000 observations for P. ponderosa and ca. 426,000 observations for P. menziesii, with ca. 6% of the observations in each dataset Referencia bibliográfica: ing the presence of one of the varieties. Classification errors to the respective databases attributable to fitting the models were ca. 5%, most of which were from falsely predicting varietal occurrence. Confusion in classifying varieties was nil. The primary drivers of the niche model were summer precipitation, winter precipitation and summer degree-days >5 C for the varieties of P. ponderosa and the summer-winter temperature differential, summer maximum temperatures and summer precipitation for the varieties of P. menziesii. Projected impacts of global warming using output from an ensemble of 17 general circulation models were greater for P. ponderosa than for P. menziesii and for varieties of both species from inland climates than from coastal. Projected impacts imply dire consequences for the varieties of P. menziesii occurring in Mexico.
ISSN: 0378-1127
eISSN: 1872-7042


Referencia bibliográfica: 41 de 76
Título: Survival probability of white spruce and trembling aspen in boreal pure and mixed stands experiencing self-thinning.
Autores: Reyes-Hernández, Valentin; Comeau, Philip G.
Revista: FOREST ECOLOGY AND MANAGEMENT, 323 105-113, JUL 1 2014
Idioma: Inglés
Resumen: Tree mortality due to competition is one of the key drivers of forest succession in Canadian boreal mixedwood forests. We analyzed survival probability of trembling aspen (Populus tremuloides Michx.) and white spruce (Picea glauca (Moench) Voss.) trees and saplings, growing in pure and mixed stands experiencing self-thinning, in the Boreal Forest Natural Region of Alberta, Canada. Generalized logistic regression models were utilized to evaluate the effects of tree and stand characteristics on the survival probability of both species. Absolute size of the individuals, characterized by diameter at breast height, had a positive effect on the survival of both aspen and spruce. Aspen experienced decreasing survival with size, which is most likely linked to age rather than competition. Significant effects of basal area of trees larger than the subject tree indicated that one-sided inter- and intra-specific competition, rather than two-sided, is the primary driving force of competition-related mortality for both aspen and spruce. Periodic annual increment in diameter was a better predictor of survival than basal area of larger trees, indicating that growth rate is the most important individual characteristic that defines survival of both aspen and spruce in these self-thinning stands.
ISSN: 0378-1127
eISSN: 1872-7042


REVISTA CHAPINGO SERIE CIENCIAS FORESTALES Y DEL AMBIENTE
Referencia bibliográfica: 42 de 76
Título: TREE STRUCTURE AND DIVERSITY OF SECONDARY VEGETATION DERIVED FROM A SEMI-EVERGREEN TROPICAL FOREST IN QUINTANA ROO
Autores: Carreón-Santos, Roy J.; Valdez-Hernández, Juan I.
Revista: REVISTA CHAPINGO SERIE CIENCIAS FORESTALES Y DEL AMBIENTE, 20 (1):119-130; JAN-APR 2014
Idioma: Inglés
Resumen: The structure and diversity of a semi-evergreen tropical forest in the Andres Quintana Roo ejido, located in the municipality of Felipe Carrillo Puerto, Quintana Roo, Mexico, was analyzed. To this end, six sampling units of 20 x 50 m (1,000 m(2)), two units per tropical forest development condition (age of disturbance), were established: a) forest fire 10 years ago (C10), b) agricultural use 24 years ago (C20) and c) pastoral use 33 years ago (C30). Forest structure was characterized by the diameter and height distribution of individuals in each condition, as well as using the importance value (IVI) and forest value (FVI) indices. Pouteria reticulata was the species with the highest IVI and Ficus sp. had the highest FVI, both in C10 and C20, while Bursera simaruba and Lysiloma latisiliquum obtained the highest WI and FVI, respectively, in C30. Species diversity was evaluated using proportional abundance (Shannon: H') and floristic similarity (Sorensen: IS) indices. Species diversity of seedlings, poles and saplings was higher in C10, C30 and C20, respectively. Poles had on average floristic similarities of 60 % between forest development conditions, while seedlings and saplings had less than 50 %.
ISSN: 0186-3231
eISSN: 2007-4018

Referencia bibliográfica: 43 de 76
Título: BIOLOGICAL QUIALITY OF WASTEWATER USED IN IRRIGATION OF FORAGE CROPS IN TULANCINGO, HIDALGO, MEXICO
Autores: Hernández-Acosta, Elizabeth; Quiñones-Aguilar, Evangelina E.;
Cristóbal-Acevedo, David; Rubiños-Panta, Juan E.
Revista: REVISTA CHAPINGO SERIE CIENCIAS FORESTALES Y DEL AMBIENTE, 20 (1):89-100, JAN-APR 2014
Idioma: Inglés
Resumen: The use of wastewater in irrigation of forage crops is a practice that increases daily in areas where water, for this purpose, is scarce. However, growers, when being in direct contact with wastewater, suffer from gastrointestinal diseases caused by coliforms and parasites (helminths). In the present study, we evaluated fecal coliform (in wastewater, soil and plants) and helminths (in wastewater) in module II, Irrigation District 028, Tulancingo, Hidalgo. Bacteriological and helminth analyzes were consistent with the methodologies reported in the NMX-AA-003-1980, NOM-001-SEMARNAT-1996, PROY NMX-AA-042-SCEI-2008 and section 9810 APHA. A total 16 water sampling sites were determined in irrigation channels and 54 samples of both soil and plants were taken. The highest fecal coliform concentrations were 2 x 10(10) MPN.100 mL(-1) of water, 10(9) MPN.100 g(-1) of soil, 10(9) MPN.100 g(-1) of root and 3 x 10(9) MPN.100 g(-1) of stem. Eleven of the 16 sampling sites were helminths. We suggest treating wastewater before use, to prevent health problems among growers.
ISSN: 0186-3231
eISSN: 2007-4018


CIENCIA DE LAS PLANTAS

ENVIRONMENTAL AND EXPERIMENTAL BOTANY
Referencia bibliográfica:  44 de 76
Título: Diesel effects on root hydraulic conductivity and morphological changes of the vascular cylinder in Medicago sativa
Autores: Herminia Alejandra, Hernández-Ortega; Paz Alejandra, Quintanar-Isaías; Ana Teresa, Jaramillo-Pérez; Alejandro, Alarcón; Ronald, Ferrera-Cerrato; Roberto, Lazzarini-Lechuga
Revista: ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 105 1-9, SEP 2014
Idioma: Inglés
Resumen: The effects petroleum hydrocarbons (PH) on the morphological and physiological responses of roots have not been well studied. This research evaluated the root hydraulic responses of Medicago sativa seedlings exposed to diesel. Seeds were germinated in test tubes with 1% water-agar contaminated with diesel (3000, 6000, 9000, 12 000, 15 000, 18 000 and 21 000 mu L L-1), and uncontaminated test tubes were used as controls (0 mu L L-1). Ten days-old roots were detached to determine root anatomy, hydraulic conductivity (K-h), specific hydraulic conductivity (K-s), percentage of loss conductivity (PLC), and leaf water potential (Psi(lw)). Root morphological changes were related to the loss of tetrarch arrangement; however, the number of metaxylem vessels increased in response to diesel. Increasing diesel concentrations resulted in diminished K-h and K-s values, as well as enhanced PLC values. Diesel contamination resulted in the accumulation of superoxide and hydrogen peroxide in root cells, as determined by confocal microscopy.
ISSN: 0098-8472
eISSN: 1873-7307


PLANT DISEASE
Referencia bibliográfica: 45 de 76
Título: First Report of Lettuce big-vein associated virus (Varicosavirus) Infecting Lettuce in Mexico.
Autores: Ochoa-Martínez, D. L.; Alfonsina-Hernández, J.; Sánchez-Escudero, J.;
Rodríguez-Martínez, D.; Vera-Graziano, J.
Revista: PLANT DISEASE, 98 (4):573-573; APR 2014
Idioma: Inglés
ISSN: 0191-2917

Referencia bibliográfica: 46 de 76
Título: First Report of Stalk Rot Disease of Sugarcane Caused by Phaeocytostroma sacchari in Mexico
Autores: Saucedo Carabez, J. R.; Ochoa Ascencio, S.; Tovar Pedraza, J. M.
Revista: PLANT DISEASE, 98 (3):420-421, MAR 2014
Idioma: Inglés
ISSN: 0191-2917


JOURNAL OF PLANT ECOLOGY
Referencia bibliográfica: 47 de 76
Título: Resource manipulation reveals flexible allocation rules to growth and reproduction in a Mediterranean evergreen oak
Autores: Pulido, Fernando; Moreno, Gerardo; García, Eustolia; Obrador, José J.;
Bonal, Raúl; Díaz, Mario
Revista: JOURNAL OF PLANT ECOLOGY, 7 (1):77-85, FEB 2014
Idioma: Inglés
Resumen: Aims In plants, resource allocation to growth and reproduction may depart from trade-off expectations if (i) investment in growth and reproduction relies on different reFuentepools, (ii) allocation to reproduction is dependent upon reaching some growth threshold or (iii) reproduction is developmentally linked to growth, both functions relying on the same resource pool. We examined the effects of enhanced resource level on patterns of resource allocation to growth and reproduction in holm oak (Quercus ilex sbsp. ballota), a Mediterranean evergreen tree. Methods In the experimental year (2003), we manipulated the amount of soil nutrients in autumn (to increase nutrient uptake during shoot elongation in the following spring) and soil water in summer (to increase water uptake during acorn growth). Indicators of growth and male and female reproduction were estimated in the pre-experimental (2002), experimental (2003) and post-experimental (2004) years. Important Findings Fertilized trees produced significantly longer shoots, but the number of female flowers per shoot was not affected by treatments. The production of male catkins was also enhanced by fertilization. Irrigation did not affect the production of female flowers or abortion rates. Growth and female reproduction showed no consistent relationship in untreated trees, but resource addition elicited a growth-female reproduction trade-off in the experimental year. The sign of this significant relationship changed in the post-experimental year, indicating the existence of lagged effects of resource manipulation on acorn production. Overall, patterns of allocation to growth and reproduction varied as a function of sex, resource availability and year, a result consistent with extreme allocational plasticity in holm oak.
ISSN: 1752-9921


BOTANICAL SCIENCES
Referencia bibliográfica: 48 de76
Título: Biochemical and physiological responses of Agave Species to moisture restriction
Autores: Magdaleno Ramírez-Tobías, Hugo; Pena-Valdivia, Cecilia B.; Rogelio Aguirre, J.
Revista: BOTANICAL SCIENCES, 92 (1):131-139; MAR 2014
Idioma: Español
Resumen: Mexico has the greatest richness of Agave species, distributed in diverse environments. In order to contribute to the knowledge on ways to tolerate moisture constraints, the effect of two water potential (Psi) in the substrate (-0.7 and -3.5 MPa) on growth, biomass allocation, leaf thickness and proline content in two species of the subgenus Littaea (A. lechuguilla and A. striata), and six of the subgenus Agave (A. Americana var. marginata, A. angust(olia subsp. tequilana, A. asperrima, A. cupreata, A. duranguesis and A. salmiana), recognized for its economic and ecological importance, was evaluated during 14 months and under greenhouse conditions. Low moisture inhibited biomass accumulation in the eighth species; despite this, growth (number of leaves and plant coverage) kept in those more adapted to aridity or with broader environmental tolerant limits as A. angustifolia subsp. tequilana, A. duranguensis, A. lechuguilla, and A. salmiana. The limiting Psi promoted greater biomass allocation to roots at expense of leaves in some species, and duplication of radical proline in species of the subgenus Agave. The modification of biomass allocation and the increase of proline, as forms to tolerate moisture restriction, presented only in part of the species studied. In contrast, maintaining the thickness of the sheet (indicator of turgidity) was a general reaction to limiting Psi. Agave species have diverse physiological and biochemical responses, which reflect its wide tolerance to adverse environmental conditions and explains the wide ecological distribution of the genus.
ISSN: 2007-4298


ACTA PHYSIOLOGIAE PLANTARUM
Referencia bibliográfica 49 de 76
Título: NAC transcription factor expression, amino acid concentration and growth of elite rice cultivars upon salt stress
Autores: García-Morales, Soledad; Carlos Gómez-Merino, Fernando; Iris Trejo-Téllez, Libia
Revista: ACTA PHYSIOLOGIAE PLANTARUM, 36 (7):1927-1936, JUL 2014
Idioma: Inglés
Resumen: NAC transcription factors (TF) play important roles in regulating osmotic stress tolerance in plants. We tested the expression of 57 NAC genes in the presence of NaCl in young leaves of two elite rice cultivars, Cotaxtla and Tres Rios, which display contrasting responses to salinity at the biochemical and physiological levels. Using qRT-PCR, the expression of 41 out of 57 NAC genes was validated, of which 23 showed regulation by NaCl. We identified two NAC genes (Os02g56600 and Os12g07790) induced in Cotaxtla, but repressed in Tres Rios when plants were exposed to 100 mM NaCl in nutrient solution. In both elite cultivars, treated plants showed higher concentrations of total amino acids and proline in comparison to the controls; in all cases, Cotaxtla plants accumulated more free amino acids and proline than Tres Rios plants. Furthermore, shoot growth was more affected in both cultivars, while root length was not reduced in treated plants in comparison to the controls. We conclude that both elite rice cultivars exhibit different expression patterns of NAC transcription factors as well as biochemical and physiological responses to salt stress, giving rise to better performance of Cotaxtla plants in comparison to Tres Rios plants under our experimental conditions.
ISSN: 0137-5881
eISSN: 1861-1664


INVASIVE PLANT SCIENCE AND MANAGEMENT
Referencia bibliográfica:  50 de 76
Título: Hyparrhenia variabilis and Hyparrhenia cymbaria (Poaceae): New for the Americas, Successful in Mexico
Autores: Vibrans, Heike; Garcia-Moya, Edmundo; Clayton, Derek; Sanchez-Ken, Jorge G.
Revista: INVASIVE PLANT SCIENCE AND MANAGEMENT, 7 (2):222-228, APR-JUN 2014
Idioma: Inglés
Resumen: Hyparrhenia cymbaria (boat thatching grass, ipopo grass) and Hyparrhenia variabilis (no common name), robust African savanna grasses with complex taxonomies, have not yet been reported for the Americas. Large populations were found in central Jalisco, northeastern Michoacan, and Morelos, Mexico. The species grow in maize and sorghum fields as well as on roadsides and in old fields, but always in association with present or past sorghum cultivation; this suggests introduction through contaminated seed material from Africa. Because of the size and density of the populations, and their native ecology, they are both agriculturalpests as well as a potentially dangerous invaders for the American (sub)tropical grasslands and native scrublands, including the southern United States. The invasion underlines the importance of effective phytosanitary controls of the seed supply.
ISSN: 1939-7291
eISSN: 1939-747X


BRITTONIA
Referencia bibliográfica: 51 de 76
Título: Morphology and anatomy of the flower tribe Hamelieae (Rubiaceae)
Autores: Martínez-Cabrera, Dorismilda; Terrazas, Teresa; Ochoterena, Helga
Revista: BRITTONIA, 66 (1):89-106, MAR 2014
Idioma: Español
Resumen: We studied floral morphology and anatomy of seven genera of the tribe Hamelieae sensu Manns & Bremer with the goal to evaluate the potential of these characters in the circumscription of the tribe. Twenty two species of Hamelieae were studied as well as ten representative species of the Cinchonoideae, Ixoroideae, and Rubioideae subfamilies for comparative purposes. The Hamelieae members had stamens adnate to the corolla base, anther dorsifixed with introrse dehiscence, amphivasal vascular bundle in the filament, endothecium of one layer of cells, papillose stigma, axile placentation, orthotropous and unitegmic ovules, epidermal cells of the integument with tannins, and idioblasts with raphides in all whorls. Exostema and Hintonia (Cinchonoideae) share with Hamelieae the stamens adnate to the corolla base and the imbricate aestivation. However, these genera are unlike of the tribe because they have anthers with latrorse dehiscence, round filaments, ovoid styles with a constriction, anatropous ovules with basipetal orientation, and idioblasts with druses or crystal sands. Rubioideae and Cinchonoideae representatives unlike Hamelieae and species of Cinchonoideae studied have valvate and contorted to the left aestivation, anthers dorsifixed at the middle, stamens adnate to the throat of the corolla, and trichomes in the throat of the corolla tube. The imbricate aestivation, the occurrence of raphides, and the adnate stamens of the corolla base supported the relationships among Hamelieae and Cinchonoideae as suggested by molecular phylogenies.
ISSN: 0007-196X


PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY
Referencia bibliográfica: 52 de 76
Título: First report of Tobacco mosaic virus (TMV) and Poinsettia mosaic virus (PnMV) in poinsettia (Euphorbia pulcherrima Wild. Ex Klotzch) in Mexico
Autores: Ocampo Ocampo, T.; Ochoa Martínez, D. L.; Ramírez Rojas, S.; Valdovinos Ponce, G.; Nava Díaz, C.
Revista: PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY, 82 235-241; 2013
Idioma: Español
Resumen: The Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias (INIFAP), in Zacatepec Morelos, started a genetic improvement program of wild and semi-cultivated poinsettia plants ("nochebuena de sol. It is important to generate a phytosanitary database that allows the release of new varieties and hybrids that provide tolerance to the major pathogens reported in cultivated poinsettia plants. The phytosanitary status of the "nochebuena de sol" plants is not available in Mexico, so the objective of this research was to generate preliminary data about viruses associated to these materials. Based on DAS-ELISA and RT-PCR results, we reported the presence of the Tobacco mosaic virus (TMV) and Poinsettia mosaic virus (PnMV) in wild and semi-cultivated poinsettia plants for the first time in Mexico.
ISSN: 1851-5657


Referencia bibliográfica: 53 de 76
Título: Moringa oleifera: phytochemical detection, antioxidants, enzymes and antifugal properties
Autores: Torres-Castillo, J. A.; Sinagawa-García, S. R.; Martínez-Ávila, G. C. G.; López-Flores, A. B.; Sánchez-González, E. I.; Aguirre-Arzola, V. E.; Torres-Acosta, R. I.; Olivares-Sáenz, E.; Osorio-Hernández, E.; Gutiérrez-Diez, A.
Revista: PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY, 82 193-202; 2013
Idioma: Inglés
Resumen: Moringa oleifera is a plant with a high biotechnology potential due to its high content of proteins, carbohydrates and lipids, and secondary metabolites. Some of their secondary compounds have been advocated for traditional medicinal uses. This work shows an overview of the histological organization and the composition of some biochemical components (e.g.: enzymatic inhibitors, phytochemicals, enzymatic profiles and antifungal potential) of different plant tissues. These components could be associated with the physiology and defense mechanisms of the study plant species. These activities were detected using synthetic substrates by conventional strategies based on spectrophotometrical and zymography assays. Moringa oleifera presented a typical histological array for dicotyledonous plants. According to the phytochemical assay, leaves showed the highest antioxidant activity, which could be related with their contents of phenolic compounds. Also, trypsin inhibitors were detected in different parts of the plant, indicating possible implications as defensive traits:The presence and abundance of the detected compounds could be associated with a general status of the physiology of the plant. It should be noted, however, that all components detected could be involved in plant defense mechanisms.
ISSN: 1851-5657


CIENCIAS AMBIENTALES

SOIL & SEDIMENT CONTAMINATION
Referencia bibliográfica: 54 de 76
Título: Assessment of Tannery Waste in Semi-arid Soils Under a Simulated Rainfall System
Autores: Barajas-Aceves, M.; Ríos-Berber, J. D.; Oropeza-Mota, J. L.; Rodríguez-Vázquez, R.
Revista: SOIL & SEDIMENT CONTAMINATION, 23 (8):954-964; 2014
Idioma: Inglés
Resumen: The use of tannery sludge in arid soils could be promising due to the high content of organic carbon and nitrogen. However, tannery waste also contains high amounts of Cr and salts that could leach into drainage water in response to rainfall. In order to study the effects of two tannery wastes as organic fertilizers on two types of semi-arid soils, simulated rainfall experiments were carried out. Soils collected from under and outside a mesquite tree canopy were amended with fleshing waste and/or tannery sludge and incubated 0 to 6 months prior to being subjected to simulated rainfall. The parameters measured were: infiltration, runoff, soil and Cr losses, andNH(4)(+)-N and NO3—N released after a rainfall event. Results showed that fleshing waste added to soils from outside the canopy tree was the most effective treatment for decreasing runoff, soil losses, and Cr, NH4+-N and NO3—N loss in runoff and infiltration, in general. However, the same treatment had the opposite results for soil under the canopy. These results indicate that the types of waste and soil must be taken into consideration when attempting to improve physical and chemical characteristics of semi-arid soils. Thus, the use of tannery waste represents a potential hazard, not only causing soil erosion but also Cr contamination in adjacent sites and aquifers.
ISSN: 1532-0383
eISSN: 1549-7887


REVISTA INTERNACIONAL DE CONTAMINACION AMBIENTAL
Referencia bibliográfica: 55 de 76
Título: RESIDUES IN VEGETABLES AND RISK ISSUES IN MEXICO
Autores: Antonia Pérez, Ma; Navarro, Hermilio; Miranda, Edith
Revista: REVISTA INTERNACIONAL DE CONTAMINACION AMBIENTAL, 29 44-64; SI SEP 2013
Idioma: Español
Resumen: Los plaguicidas han sido el medio más utilizado para el control de plagas y enfermedades. El objetivo del presente artículo es analizar la problemática, así como los posibles riesgos al ambiente y la salud, de los residuos de plaguicidas en las hortalizas cultivadas en México. El enfoque metodológico consistió en una revisión bibliográfica de bases de datos y revistas científicas especializadas. Se localizaron más de 17 000 publicaciones y se consultaron alrededor de 110, con base en la diversidad de temáticas y enfoques en sus investigaciones sobre la presencia de plaguicidas en hortalizas. El análisis en su conjunto permitió la comprensión de la problemática, los riesgos y sus impactos actuales. Los resultados encontrados indicaron que en México, a pesar de la regulación existente, aún se autorizan y utilizan algunos plaguicidas prohibidos en otros países; asimismo, se encontró una serie de productos caducos en uso o con almacenamiento inadecuado que son un riesgo para el ambiente; además, se detectó que la presencia de residuos de plaguicidas en hortalizas y frutas es frecuente, con más del 50% en las muestras evaluadas con estudios específicos, en monitoreos de productos para consumo nacional y de exportación a Estados Unidos de América; aunque, la mayoría de los casos no rebasaron los límites máximos de residuos de plaguicidas (LMRP). Los riesgos en la salud humana y en los ecosistemas han sido evidenciados por varios autores, tal situación ha generado una problemática técnica y social que requiere alternativas biológicas, químicas y de manejo integrado para cubrir las necesidades del productor sin descuidar la calidad del producto. También se recomienda revisar y actualizar los LMRP para la combinación de plaguicida-cultivo en distintos productos químicos y cultivos de interés. Igualmente se propone un monitoreo continuo que proporcione resultados confiables para establecer políticas de comercialización, movilidad, uso y manejo de plaguicidas, así como una disminución de riesgos.
ISSN: 0188-4999


CIENCIAS VETERINARIAS

REVISTA CIENTIFICA-FACULTAD DE CIENCIAS VETERINARIAS
Referencia bibliográfica: 56 de 76
Título: Optimum Biological Levels of Total Lysine for Growing- Finishing Pigs
Autores: Alfredo Martínez-Aispuro, José; Luis Figueroa-Velasco, José; Luis Cordero-Mora, José; Ruiz-Flores, Agustín; Teresa Sánchez-Torres, María; Esther Ortega-Cerrilla, María; Narciso-Gaytán, Carlos
Revista: REVISTA CIENTIFICA-FACULTAD DE CIENCIAS VETERINARIAS, 24 (1):64-72; JAN-FEB 2014
Idioma: Español
Resumen: The objective of the present study was to determine the optimum total lysine level on the productive variables, carcass characteristics and plasma urea nitrogen concentration in growing-finishing barrows. The effect of four levels of total lysine on growing (0.95, 1.05, 1.15 and 1.25%) and finishing pigs (0.75, 0.85, 0.95 and 1.05%) was evaluated on growth performance, carcass characteristics, and plasma urea nitrogen concentration. Ratios of threonine, methionine and tryptophan to lysine remained constant. 24 crossbred pigs were used, with initial live weight 23.3 +/- 3.4 kg, distributed in a completely randomized design with six replications, a pig was the experimental unit. Optimum biological levels (OBL) for the variables that showed statistical differences among treatments were determined. In the growing phase there were not significant differences for both growth performance and carcass characteristics. In the finishing phase there were significant differences for growth performance variables. The OBL for average daily gain, feed: gain ratio and fat free lean gain was 0.88% total lysine; meanwhile the OBL for average daily feed intake was 0.961% total lysine. Maintaining the relationship established threonine (0.68%), methionine (0.26%) and tryptophan (0.18%) with referenced to lysine. The total lysine requirement for growing pigs is greater than 0.75%, whilst respecting the relationship between threonine, methionine and tryptophan.
ISSN: 0798-2259


CONSERVACIÓN DE LA BIODIVERSIDAD

TROPICAL CONSERVATION SCIENCE
Referencia bibliográfica: 57 de 76
Título: Potential distributional patterns of three wild ungulate species in a fragmented tropical region of northeastern Mexico.
Autores: García-Marmolejo, G.; Chapa-Vargas, L.; Huber-Sannwald, E.; Weber, M.; Rosas-Rosas, O. C.; Martínez-Calderas, J.
Revista: TROPICAL CONSERVATION SCIENCE, 6 (4):539-557; 2013
Idioma: Inglés
Resumen: In the northernmost American tropical forests of eastern Mexico, we analyzed the potential distribution of three ungulate species, Odocoileus virginianus, Mazama temama and Pecari tajacu, in response to several physical, climatic, biological, and anthropogenic variables, in order to identify environmental factors affecting distribution and potential key areas for ungulate conservation. Current presence resources for these species were gathered, and potential distribution models were built using Maximum Entropy niche modeling (MaxEnt). Model suitabilitysurfaces were used to calculate remaining potential habitat areas in theregion, as well as the potential sympatric area and representation of these areas in Natural Protected Areas. Biological and anthropogenic variables were the best species distribution predictors. Landscapecomposition (the proportion of different land-use and land-cover classes: forest, agriculture, and pasture) within approximately 120 ha, was the most important variable for all models, influencing each species differently with respect to their tolerance of altered habitats. The remaining potential area of all three species is fragmented and has apparently been nearly lost in plains (<14% remaining). Distribution models allowed us to detect an important location in the western portion of our study area which may function as a large biological corridor in the Sierra Madre Oriental mastogeographic province, a region heavily transformed by land use change. In the context of habitat transformation, management promoting quality matrix at the landscape level promises to be a viable alternative for ungulate conservation in tropical regions of Mexico.
ISSN: 1940-0829


REVISTA MEXICANA DE BIODIVERSIDAD
Referencia bibliográfica: 58 de 76
Título: Dr. Marcos Rafael Lamothe and Argumedo (OBITUARIO)
Autores: Pérez-Silva de Lamothe, Evangelina; Lamothe-Pérez, Gabriela; Cid del
Prado-Vera, Ignacio; Salgado-Maldonado, Guillermo
Revista: REVISTA MEXICANA DE BIODIVERSIDAD, 85 (1):332-334; MAR 2014
Idioma: Inglés, Español
ISSN: 1870-3453

Referencia bibliográfica: 59 de 76
Título: Potential species distribution modeling and the use of principal component analysis as predictor variables
Autores: Cruz-Cárdenas, Gustavo; López-Mata, Lauro; Luis Villaseñor, José; Ortiz, Enrique
Revista: REVISTA MEXICANA DE BIODIVERSIDAD, 85 (1):189-199, MAR 2014
Idioma: English
Resumen: Prior to modeling the potential distribution of a species it is recommended to carry out analyses to reduce errors in the model, especially those caused by the spatial autocorrelation of presence data or the multi-collinearity of the environmental predictors used. This paper proposes statistical methods to solve drawbacks frequently disregarded when such models are built. We use spatial resources of 3 species characteristic of the Mexican humid mountain forest and 2 sets of original variables. The selection of presence-only resources with no autocorrelation was made by applying both randomness and pattern analyses. Through principal component analysis (PCA) the 2 sets of original variables were transformed into 4 different sets to produce the species distribution models with the modeling application in Maxent. Model precision was higher than 90% applying a binomial test and was always higher than 0.9 with the area under the curve (AUC) and with the partial receiver operating characteristic (ROC). The results show that the resources selected with the randomness method proposed here and the use of the PCA to select the environmental predictors generated more parsimonious predictive models, with a precision higher than 95%, and in addition, the response variables show no spatial autocorrelation.
ISSN: 1870-3453


ECOLOGÍA

BIOTROPICA
Referencia bibliográfica: 60 DE 76
Título: Precipitation Regime and Nitrogen Addition Effects on Leaf Litter Decomposition in Tropical Dry Forests
Autores: Bejarano, Marylin; Crosby, María M.; Parra, Víctor; Etchevers, Jorge D.;
Campo, Julio
Revista: BIOTROPICA, 46 (4):415-424, JUL 2014
Idioma: Inglés
Resmen: We conducted a year-long field experiment to investigate how nitrogen addition affected decomposition of Piscidia piscipula and Gymnopodium floribundum along a precipitation gradient in the Yucatan Peninsula, Mexico. Nitrogen addition did not affect decomposition rates at the drier sites. However, fertilization at the wettest site increased the decomposition of Gymnopodium litter and decreased the decomposition of Piscidia litter. Water-soluble carbon and lignin, and water-soluble carbon and nitrogen concentrations were the best predictors of decomposition for Gymnopodium and Piscidia litters, respectively. We conclude that the effects of nitrogen addition on decomposition will vary from site to site as a function of mean annual precipitation, inherent soil fertility, and species identity.
ISSN:
0006-3606
eISSN:
1744-7429

INTERCIENCIA
Referencia bibliográfica: 61 de 76
Título: PHENOTYPIC VARIATION, HETEROSIS AND HERITABILITY OF A TOMATO INTERSPECIFIC CROSS
Autores: Hernández-Bautista, Aurelio; Lobato-Ortiz, Ricardo; Cruz-Izquierdo, Serafín; Jesús García-Zavala, J.; Luis Chávez- Servia, José
Revista:  INTERCIENCIA, 39 (5):327-332; MAY 2014
Idioma: Spanish
Resumen: In order to study and take advantage of the genetic diversity present in wild relatives of tomato (Solanum lycopersicum L), it is necessary to continue exploring new germplasm sources to find novel genes that contribute to generate new varieties with improved yield and quality characteristics. An interspecific cross between S. pimpinellifolium line 11904 and S. lycopersicum line LOR82 was made to obtain an F, population, aiming to of estimate the degree of dominance, heterosis, broad-sense heritability of different traits in the F, population and measuring phenotypic variation between parents. The parents resuited statistically different (p <= 0.05) for most of the traits, except for pH. The species S. pimpinellifolium expressed a high degree of dominance in fruit size related traits (PPF, LF and AF) and earliness related traits (DM and DFPR), while Brix showed additivity. Most values of heterosis were negative, but NTF (183.93%), NFPR (5.08%) and DM (7.34%) were positive. Traits affecting fruit weight and size showed a high degree of heritability (112) (>0.88) as well as Brix (0.86). According
to these results, germplasm derived from LOR82 line and 11904 line presented useful traits for breeding programs in Mexico.
ISSN: 0378-1844

Referencia bibliográfica: 62 de 76
Título: TRACE METALS CONCENTRATION IN CONDENSED WATER FROM THE ATMOSPHERIC HUMIDITY IN THE VALLEY OF MEXICO
Autores: Bautista-Olivas, Ana Laura; Tovar-Salinas, Jorge Leonardo; Mancilla-Villa, Oscar Raúl; Flores-Magdaleno, Héctor; Ramírez-Ayala, Carlos; Arteaga-Ramírez, Ramón; Vázquez-Pena, Mario
Revista: INTERCIENCIA, 39 (4):234-240; APR 2014
Idioma: Español
Resumen: The shortage of drinking water is a serious problem that makes it necessary to seek new options to mitigate it, being atmospheric water harvesting an option. However, it is necessary to ensure the obtained water quality, especially in areas with high levels of air pollution, such as the Valley of Mexico. This study evaluated, in water collected by condensation in the Valley of Mexico, the following variables: electric conductivity (EC) and pH, measured with a conductivity meter/potentiometer; and concentrations of Al, As, Ba, Cd, Cu, Cr, Fe, Hg, Mn, Pb and Zn, determined by an inductively coupled plasma (ICP) spectrophotometer, following the methods recommended by EPA and APHA. The study was conducted in three areas: one in Texcoco, State of Mexico; and two in Mexico City (central and northern areas). In each site, 25 samples were taken from May to August 2010. Water was collected with a prototype called 'Higroiman' (hygro-magnet), which lowers the temperature of the contact surface with environment to induce the dew point and condense the atmospheric humidity. A test of means (Tukey, P <= 0,05) was applied to the results and these were compared with the permissible limits of drinking water established by WHO. The EC of atmospheric water is between 56,4 and 87,05 mu S.cm(-1), while pH values are between 6,58 and 6,63. In some samples, Al, Fe and Pb exceeded the permissible limits.
ISSN: 0378-1844


ECONOMÍA

APPLIED ECONOMICS
Referencia bibliográfica: 63 de 76
Título: Economic growth as a function of human capital, internet and work
Autores: Jiménez, Martha; Arturo Matus, Jaime; Angel Martínez, Miguel
Revista:
APPLIED ECONOMICS, 46 (26):3202-3210, 2014
Idioma: Inglés
Resumen: The World Bank has suggested the need to enhance Information and
Communication Technology skills in all sectors because a 10% increase in internet connectivity was found to boost GDP growth by 1.38%. Simultaneously, the OECD argued that high internet access rates generate a 2% increase in GDP. Because the internet positively affects economic growth, we investigated the relationship between an economically active population, human capital and technology to evaluate these effects in Mexico. A data series from 1991 to 2010 was analysed in three stages according to the least-squares method. A Cobb-Douglas function under the Solow model was considered. Technology and internet access were found to positively affect top-level students and graduate students and thus contribute to the global innovation index.
ISSN: 0003-6846
eISSN: 1466-4283



ENTOMOLOGÍA

FLORIDA ENTOMOLOGIST
Referencia bibliográfica: 64 de 76
Título: LEAF PENETRATION PATTERN OF AULACASPIS TUBERCULARIS (HEMIPTERA: DIASPIDIDAE) STYLET IN MANGO
Autores: Juárez-Hernández, Pablo; Valdez-Carrasco, Jorge; Valdovinos-Ponce, Guadalupe; Antonio Mora-Aguilera, J.; Otero-Colina, Gabriel; Teliz-Ortiz, Daniel; Hernández-Castro, Elías; Ramírez-Ramírez, Iván; González-Hernández, Víctor A.
Revista: FLORIDA ENTOMOLOGIST, 97 (1):100-107; MAR 2014
Idioma: Inglés
Resumen: Mango (Mangifera indica L.) is an intensively cultivated fruit in Mexico, the leading exporter of this product in the world. One important limiting factor in mango production is the white mango scale (Aulacaspis tubercularis Newstead; Hemiptera: Diaspididae). White mango scale infestation causes irreversible leaf yellowing and death, and it lowers fruit quality below export requirements. Feeding mechanisms of these diaspidids have not been extensively studied; no histological studies on this subject are known. We histologically analyzed leaf tissues penetrated by the stylet bundle (SB) of white mango scale females, in order to follow the SB cellular path, to observe the extent of visually-detectable leaf cell damage, and to determine if this insect feeds on phloem sap. Mango plants of cv. 'Manila' were artificially infested with this insect in the laboratory. Histological slices from infested leaves were processed for microscope observation of the intact SB. Through this process a complete SB could not be observed, so its full accurate length could not be reported. However, the SB length was estimated at 3 mm, i.e., 3 times the total length of the female body length, which was 1 mm. The SB path inside the leaf was mostly intracellular through the mesophyll, but it also pierced lignified xylem cells and nutrient-rich phloem tissues in the vascular bundles. Thick red masses were formed along the SB path, possibly containing phenolic compounds. Cell lysis or collapse was not observed in the SB-injured leaf tissue.
ISSN: 0015-4040
eISSN: 1938-5102


COLEOPTERISTS BULLETIN
Referencia bibliográfica: 65 de 76
Título: SEED BEETLES (COLEOPTERA: BRUCHIDAE) ASSOCIATED WITH SEEDS OF PAVONIA CAV. (MALVACEAE), WITH DESCRIPTION OF A NEW SPECIES AND NOTES ON THREE OTHERS
Authors: Romero-Napoles, J
Revista: COLEOPTERISTS BULLETIN, 68 (1):61-68, MAY 2014
Idioma: Inglés
Resumen: The species of Bruchidae associated with seeds of Pavonia Cav. (Malvaceae) are treated here, including Acanthoscelides bellamyi Romero, new species, which feeds on seeds of Pavonia chlorantha (Kunth) Fryxell. Notes are provided for Acanthoscelides elevatus (Sharp), Acanthoscelides machiques Johnson, and Acanthoscelides pavoniestes Johnson. A key is included to aid in identifying the species of Bruchidae associated with the genus Pavonia.
ISSN: 0010-065X


REVISTA COLOMBIANA DE ENTOMOLOGIA
Referencia bibliográfica: 66 de 76
Título: Population fluctuation of Diaphorina citri (Hemiptera: Liviidae) in Persian lime (Citrus latifolia), in Huimanguillo Tabasco, México
Autores: García Garduza, Diógenes; Sánchez Soto, Saúl; Romero Nápoles, Jesús; Pérez Flores, Julián
Revista: REVISTA COLOMBIANA DE ENTOMOLOGIA, 39 (2):201-204; JUL-DEC 2013
Idioma: Inglés, Español
Resumen: Diaphorina citri is the vector of Huanglongbing disease, which is currently in 12 of 23 citrus producing states in Mexico, including Tabasco, where there are 15,406 ha of these crops. The aim of this study was to determine the population dynamics of D. citri and its relation with the abundance of vegetative shoots, temperature and precipitation in Huimanguillo, Tabasco. The work was done by sampling fortnightly from September 2010 to August 2011 in a plantation of Persian lime (Citrus latifolia Tanaka) of 1 ha. Population dynamics of eggs and nymphs was determined by collecting vegetative shoots, and adult dynamics by capturing them in yellow sticky traps. The highest incidence of D. citri was between March and June, coinciding with the abundance of vegetative shoots and high temperature. The abundance of eggs and nymphs showed high correlation with that of vegetative shoots, moderate correlation with temperature, and negative correlation with rainfall. The incidence of adults exhibited a moderately correlation with temperature and a low correlation with abundance of vegetative shoots and precipitation.
ISSN: 0120-0488


FARMACOLOGÍA Y FARMACIA

JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE
Referencia bibliográfica: 67 de 76
Título: Factors affecting ethnobotanical knowledge in a mestizo community of the Sierra de Huautla Biosphere Reserve, Mexico.
Autores: Beltrán-Rodríguez, Leonardo; Ortiz-Sánchez, Amanda; Mariano, Néstor A.; Maldonado-Almanza, Belinda; Reyes-García, Victoria
Revista: JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE, JAN 27 2014
Idioma: Inglés
Resumen: Background: Worldwide, mestizo communities's ethnobotanical knowledge has been poorly studied. Based on a mestizo group in Mexico, this study assesses a) the use value (UV) of the local flora, b) gendered differences in plant species, and c) the association between socio-economic variables and ethnobotanical knowledge. Methods: To assess the degree of knowledge of plant resources, we  conducted 41 interviews collecting information on knowledge of local plant resources and the socio-economic situation of the informant. We also collected free listings of useful plants by category of use to identify the UV of each species. With the support of key informants, we photographed and collected the plant material Referencia bibliográfica: ed during the interviews and free listings on five different habitats. Paired t-tests and a Wilcoxon signed rank test were used to determine differences in the number of species known by men and women. Differences in distribution were analyzed by means of the Shapiro-Wilk's W normality tests. To determine the association of socio-economic factors and Ethnobotanical knowledge, we used a non-metric multidimensional scaling analysis (NMDS). Results: Informants listed 185 species. Medicinal plants constituted the most diverse group (90 species). Tropical deciduous forest is the habitat that concentrates the highest proportion of plant resources (80 species). The use-values were classified into three groups: A (4-6 UV; three species), B (0.35-1.37 UV; 39 species) and C (0-0.29 UV; 143 species). High-quality wood species and those associated to religious ceremonies had the highest UV. Women's and men's knowledge of plant species showed statistically significant differences at the interspecific and the intracategorical levels (Student's test, T15 = 4.8, p < 0.001). Occupation, gender and age were statistically significant associated to ethnobotanical knowledge (p < 0.05), whereas income, education level, and place of origin were not. Conclusion: This research improves our understanding of the socio-economic activities associated with the intracultural distribution of ethnobotanical knowledge among mestizo Mexican communities. It also provides information on plant resources and habitats and how local peasants value them. This information could help in the development of proposals to improve biocultural conservation and strengthen traditional knowledge systems for effective forest management.
ISSN: 1746-4269


HORTICULTURA

SCIENTIA HORTICULTURAE
Referencia bibliográfica: 68 of 76
Título: Complete vineyard floor cover crops favorably limit grapevine vegetative growth
Autores: Giese, Gill; Velasco-Cruz, Ciro; Roberts, Lucas; Heitman, Josh; Wolf, Tony K.
Revista: SCIENTIA HORTICULTURAE, 170 256-266, MAY 7 2014
Idioma: Inglés
Resumen: Complete vineyard floor cover crops were evaluated in a long-term study for their ability to regulate excessive vegetative growth of the grapevine (Vitis vinifera L) variety 'Cabernet Sauvignon'. Treatments were: tall fescue (Festuca arundinacea Shreb.) 'KY-31' and 'Elite II', hard fescue (Festuca ovina L) 'Aurora Gold', perennial ryegrass (Lolium perenne L), orchardgrass (Dactyl is glomerata L.), and an under-trellis herbicide strip combined with KY-31 fescue interrows. Compared to herbicide-treated soil strip, Elite ll fescue reduced vine pruning weights (kg/vine) 28%, individual cane weight (g) 20%, and canopy leaf layer number 25%. KY-31 fescue produced the greatest biomass and stand density, while perennial ryegrass produced the least biomass and Aurora Gold hard fescue produced the lowest stand density. Elite II fescue produced less biomass but equivalent stand density compared to KY-31 fescue. Treatments minimally impacted vine water potential (Psi(md),Psi(stem)), indicating that the grasses were not overly competitive with grapevines for soil moisture. All grass treatments tended to depress grapevine nitrogen levels relative to the under-trellis herbicide strip treatment, but no treatment resulted in vine nitrogen levels below the acceptable sufficiency range. Because of its establishment and growth characteristics, desired suppression of vine vegetative growth, and its low impact on crop yield, we considered Elite II fescue the optimal cover crop evaluated.
ISSN: 0304-4238



REVISTA BRASILEIRA DE FRUTICULTURA
Referencia bibliográfica: 69 de 76
Título: ACTUALITY AND PERSPECTIVES OF ANNONACEOUS IN THE WORLD
Autores: Sao José, Abel Reboucas; Pires, Mónica de Moura; Gomes Estrella De
Freitas, Alfonso Lucio; Ribeiro, Denis Pereira; Aguilar Pérez, Luis
Alfonso
Revista: REVISTA BRASILEIRA DE FRUTICULTURA, 36 (1):86-93; SI FEB 2014
Idioma: Portugués
Resumen: Several species of Annonaceae family produce edible fruit. They are cultivated in commercial orchards or collected in an extractivism way in different parts of the world. The Annona genus has many species, but only a few of them are edible. Among them only a few ones are commercially cultivated, the most important economically are: (soursop) Annona muricata, (custard apple) Annona squamosa and Annona cherimola (cherimoya) especially; atemoya (hybrid between A. squamosa x A. cherimola) also presents in increasing importance. They are important economically for many countries in Africa, Asia and America (Central, North and South). The main producing countries are: cherimoya production in Australia, Chile, Spain, the United States, New Zealand and Israel in soursop; Mexico, Brazil, Venezuela and Costa Rica in custard apple: India, Brazil, Thailand, Philippines and Cuba. Fruit yield of Annonaceae in several producing countries is relatively low, due to the inappropriate use of management techniques (irrigation, fertilization, pruning, pollination, insect and disease control, etc.). In Brazil, the most important commercial crops with Annonaceae are: custard apple, soursop and atemoya. The objective of this study is to present the current status and perspectives for the Annonaceae in Brazil and worldwide. The cultivation is characterized mainly by small farmers, especially using the family labor. In general it can be considered that this group of fruits presents increasing important socio-economic values within the producing countries, but considering international market it recently presents more and more importance, because of their status as exotic fruit showing excellent qualities, including the functional value, such as vitamins, antioxidants and other functional properties. The increase in consumption of Annonaceae may be intensified if the producing countries implement an aggressive marketing program demonstrating its nutritional and functional qualities for consumers health.
ISSN: 0100-2945


INFORMÁTICA MÉDICA

THERAPEUTIC INNOVATION & REGULATORY SCIENCE*
Referencia bibliográfica: 70 de 76
Título: On the Importance in Clinical Trials That Critical Regions for Comparing 2 Independent Proportions Must Be Barnard Convex Sets
Autores: Almendra-Arao, Félix; Sotres-Ramos, David
Revista: THERAPEUTIC INNOVATION & REGULATORY SCIENCE, 48 (2):208-212, MAR 2014
Idioma: Inglés
Resumen: The non-inferiority and superiority (NI/S) formulations to evaluate a new treatment are frequently used in active-controlled clinical trials. A key assumption for the NI/S statistical tests that compare 2 independent proportions is that corresponding critical regions are Barnard convex sets. This assumption allows significant reduction in the computation time required to calculate test sizes for these tests. This study presents arguments that both types of testing procedures (NI/S) require the corresponding critical regions to be Barnard convex sets. Otherwise, these tests may become meaningless. Notably, the critical regions of the well-known Blackwelder and Hauck-Anderson tests are not Barnard convex sets for many sample sizes.
ISSN: 2168-4790


MICOLOGÍA

FUNGAL BIOLOGY
Referencia bibliográfica: 71 de 76
Título: Localization and speciation of arsenic in Glomus intraradices by synchrotron radiation spectroscopic analysis.
Autores: González-Chávez, Ma del Carmen A.; Miller, Bradley; Eduardo Maldonado-Mendoza, Ignacio; Scheckel, Kirk; Carrillo-González, Rogelio
Revista: FUNGAL BIOLOGY, 118 (5-6):444-452; MAY-JUN 2014
Idioma: Inglés
Resumen: The protective mechanisms employed by arbuscular mycorrhizal fungi (AMP) to reduce the toxic effects of arsenic on host plants remain partially unknown. The goal of this research was identifying the in situ localization and speciation of arsenic (As) in the AM fungus Rhizophagus intraradices [formerly named Glomus intraradices] exposed to arsenate [As(V)]. By using a two-compartment in vitro fungal cultures of R. intraradices-transformed carrot roots, microspectroscopic X-ray fluorescence (mu-XRF), and microspectroscopic X-ray absorption near edge structure (mu-XANES), we observed that As(V) is absorbed after 1 h in the hyphae of AMP. Three hours after exposure a decrease in the concentration of As was noticed and after 24 and 72 h no detectable As concentrations were perceived suggesting that As taken up was pumped out from the hyphae. No As was detected within the roots or hyphae in the root compartment zone three or 45 h after exposure. This suggests a dual protective mechanism to the plant by rapidly excluding As from the fungus and preventing As translocation to the plant root. mu-XANES data showed that gradual As(V) reduction occurred in the AM hyphae between 1 and 3 h after arsenic exposure and was completed after 6 h. Principal component analysis (PCA) and linear combination fitting (LCF) of mu-XANES data showed that the dominant species after reduction of As (V) by R. intraradices extra-radical hyphal was As (III) complexed with a reduced iron(II) carbonate compound. The second most abundant As species present was As (V) iron hydroxides. The remaining As (III) compounds identified by the LCF analyses suggested these molecules were made of reduced As and S. These results increase our knowledge on the mechanism of As transport in AMP and validate our hypotheses that R. intraradices directly participates in arsenic detoxification. These fungal mechanisms may help AMP colonized plants to increase their tolerance to As at contaminated sites. Published by Elsevier Ltd on behalf of The British Mycological Society.
ISSN: 1878-6146
eISSN: 1878-6162




PARASITOLOGÍA

JOURNAL OF HELMINTHOLOGY
Referencia bibliográfica: 72 de 76
Título: Evaluation of predation of the mite Lasioseius penicilliger ( Aracnida: Mesostigmata) on Haemonchus contortus and bacteria- feeding nematodes
Autores: Aguilar-Marcelino, L.; Quintero-Martínez, M. T.; Mendoza de Gives, P.; Lopez-Arellano, M. E.; Liebano-Hernández, E.; Torres-Hernández, G.; González-Camacho, J. M.; Cid del Prado, I.
Revista: JOURNAL OF HELMINTHOLOGY, 88 (1):20-23, MAR 2014
Idioma: Inglés
Resumen: Predation by the mite Lasioseius penicilliger was studied on three nematode species, i.e. infective larval stages (L3) of Haemonchus contortus and adults of Panagrellus redivivus and Rhabditis sp. Experiments were carried out in 5.5-cm diameter Petri dishes containing 2% water-agar over a period of 5 days. Batches of up to 1500 third-stage larvae (L3) of H. contortus and 1000 adult nematodes of P. redivivus and Rhabditis sp. were exposed to five mites in separate Petri dishes. Upon contact, each mite used its pedipalp and legs to identify and hold its prey and then used its chelicerae to feed upon the prey. Predation by L. penicilliger was chance dependent but mites became aggregated around any injured/damaged prey, thereby suggesting some form of chemoperception. The rate of predation on the three species of nematodes was high but L3 of H. contortus and adult Rhabditis sp. were preferred.
ISSN: 0022-149X


RECURSOS HIDRAÚLICOS

TECNOLOGÍA Y CIENCIAS DEL AGUA
Referencia bibliográfica: 73 de 76
Título: Hydrochemistry of groundwater in the Duero River basin and regulations for domestic use.
Autores: Inocencio-Flores, Daniela; Alicia Velázquez-Machuca, Martha; Luis
Pimentel-Equihua, José; Luis Montañez-Soto, José; Venegas-González, José
Revista: TECNOLOGIA Y CIENCIAS DEL AGUA, 4 (5):111-126; NOV-DEC 2013
Idioma: Español
Resumen: This work was carried out in the Duero River basin, in the northwest portion of the State of Michoacan. Its main objective was to evaluate the chemical composition of groundwater for domestic use, with an emphasis on heavy metals due to their potential effects on human health. Regulations for drinking water quality control were reviewed so as to discuss the implications and limitations of their implementation based on the results obtained. The physicochemical composition of samples from 17 sites was analyzed on two different sampling dates to determine pH, EC, t(oC), major ions and heavy metals using standard methodologies. Data was processed using multivariate statistical analysis techniques (principal components analysis, PCA). EC varied from 135 to 880 mS cm-land pH ranged from 6.28 to 7.83. The main water families found were: magnesium-bicarbonate, calcium-bicarbonate and sodium-calcium-bicarbonate. Zn, Mn, Cu and Fe concentrations were within safe limits for human consumption. Pb was detected at all the sampling sites and exceeded the maximum allowable limits for human consumption. The factors associated with the Fuente of the chemical components of the water were: basaltic rocks with olivine and feldspars minerals and calcite. Pb concentration was associated with volcanic clasts (siliceous sands).
ISSN: 0187-8336

Referencia bibliográfica: 74 de 76
Título: Rainfall-runoff expo-linear model for long-term experimental plots with corn crops.
Autores: Paz-Pellat, Fernando; Isabel Marín-Sosa, Ma; Martínez-Menez, Mario
Revista: TECNOLOGIA Y CIENCIAS DEL AGUA, 4 (5):85-97; NOV-DEC 2013
Idioma: Español
Resumen: Modeling of the rainfall-runoff relationship (P-Q) plays an important role in the planning and management of water resources in plots and basins. Although many different hydrological models currently exist to estimate this relationship, they are difficult to apply because they require a large amount of data. A simpler and more attractive method for this type of modeling is called the curve number (CN), which depends on a single parameter. Nevertheless, its application requires knowing the dynamics of vegetation cover, the hydraulic response of soil and the soil cover (e.g. agricultural residues), since these factors influence the hydraulic response of the system. A method similar to the CN in terms of simplicity is the model introduced by Paz (2009), which considers two phases in the pattern that describes the P-Q relationship- an exponential and a linear phase. This paper reviews the expo-linear model using precipitation and runoff data for a period of 6 years (1996-2001) on runoff plots with corn crops (different land management systems). In this case, the CN model was used as a method to organize the hydrological patterns resulting from different treatments. Based on the patterns observed, only the linear phase of the expo-linear model was used to estimate the P-Q relationship. The results showed a high correlation between estimated and measured Q values (R2 = 0.99 for all management systems). It was therefore concluded that the model can be reliably used as a simplified method to model the P-Q relationship. The empirical results define a simple modeling technique based on estimating the parameters of the expo-linear model.
ISSN: 0187-8336


SALUD PÚBLICA, AMBIENTAL Y OCUPACIONAL

ASIAN PACIFIC JOURNAL OF TROPICAL MEDICINE
Referencia bibliográfica:  75 de 76
Título: Inhibition of the growth and development of mosquito larvae of Culex quinquefasciatus (Diptera: Culicidae) treated with extract from leaves of Pseudocalymma alliaceum (Bignonaceae)
Autores: Granados-Echegoyen, Carlos; Pérez-Pacheco, Rafael; Soto-Hernández,
Marcos; Ruiz-Vega, Jaime; Lagunez-Rivera, Luicita; Alonso-Hernández,
Nancy; Gato-Armas, Rene
Revista: ASIAN PACIFIC JOURNAL OF TROPICAL MEDICINE, 7 (8):594-601, AUG 2014
Idioma: Inglés
Resumen: Objective: To determine larvicidal activity of the essential oil, hydrolat and botanical extracts derived from leaves of Pseudocalymma alliaceum on mosquito larvae of Culex quinquefasciatus. Methods: Croups of twenty larvae were used in the larvicidal assays. The mortality, relative growth rate, the larval and pupal duration and viability was estimated. The essential oil was analyzed by solid phase microextraction using gas chromatography coupled to mass spectrometry. Results: Essential oil at 800 ppm showed larvicidal activity at 24 h with lethal values of LC50 and LC90 of 267.33 and 493.63 ppm. The hydrolat at 20% and 10% on 2nd stage larvae showed 100% effectiveness after 24 h. The aqueous extract at 10% had a relative growth index of 0.58, while the ethanolic and methanolic extract obtained values of 0.76 and 0.70 and control reached 0.99. Larvae treated with 10% of methanol, ethanol and aqueous extract showed a reduction in larval duration of 5.00, 2.20 and 4.35 days; ethanol extract at 1% provoke decrease of 2.40 days in the development and exhibited an increment of 3.30 days when treated with 0.01%. Aqueous, ethanol and methanol extracts at 10% reduced in 6.15, 3.42 and 5.57 days pupal development. The main compounds were diallyl disulfide (50.05%), diallyl sulfide (11.77%) and trisulfide di-2-propenyl (10.37%). Conclusions: The study demonstrated for the first time, he larvicidal activity of the essential oil and hydrolat of Pseudocalymma alliaceum; aqueous, ethanol and methanol extracts inhibited the normal growth and development of mosquito larvae, prolonging and delaying larval and pupal duration.
ISSN: 1995-7645


ZOOLOGÍA

JOURNAL OF INVERTEBRATE PATHOLOGY
Referencia bibliográfica:  76 de 76
Título: Specific diversity of the entomopathogenic fungi Beauveria and Metarhizium in Mexican agricultural soils
Autores: Pérez-González, Víctor H.; Guzmán-Franco, Ariel W.; Alatorre-Rosas, Raquel; Hernández-López, Jorge; Hernández-López, Antonio; Carrillo-Benítez, María G.; Baverstock, Jason
Revista: JOURNAL OF INVERTEBRATE PATHOLOGY, 119 54-61, JUN 2014
Idioma: Inglés
Resumen: Prior knowledge of the local population structure of entomopathogenic fungi is considered an important requisite when developing microbial control strategies against major pests of crops such as white grubs. An extensive survey in the estate of Guanajuato, one of the main agricultural regions of Mexico, was carried out to determine the abundance and diversity of entomopathogenic fungi in soil. Soil collected from 11 locations was baited for entomopathogenic fungi using Galleria mellonella. In addition, all isolates were morphologically identified and selected isolates of Beauveria and Metarhizium isolates identified using Bloc and ITS or Elongation Factor 1-alpha, and ITS sequence information respectively. Genotypic diversity was then studied using microsatellite genotyping. The proportion of isolates belonging to each genus varied amongst all locations. The species Beauveria bassiana, B. pseudobassiana and Metarhizium robertsii were found, with B. bassiana being the most abundant and widely distributed. Microsatellite genotyping showed that the 36 B. bassiana isolates were grouped in 29 unique haplotypes, but with no separation according to geographical origin.
ISSN: 0022-2011



[1] En este caso se toma el Índice de inmediatez, el cual en lugar de dos años, solo contabiliza las citas hechas a los documentos publicados el año inmediato anterior, ya que la revista no cuenta aún con Factor de Impacto.

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