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Search Results: 1 - 10 of 3734 matches for " Yanet;Acosta-Gallegos "
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Características agronómicas y contenido de Fe y Zn en el grano de frijol tipo Rosa de Castilla (Phaseolus vulgaris L.)
Jiménez-Hernández, Yanet;Acosta-Gallegos, Jorge Alberto;Sánchez-García, Bertha María;Martínez Gami?o, Miguel ángel;
Revista mexicana de ciencias agrícolas , 2012,
Abstract: the 'rosa de castilla' type bean is popular in areas of guanajuato, san luis potosí and zacatecas, where it is produced under rainfed conditions. the aim of this research was to compare the agronomic characteristics of 22 rc accessions with two bred cultivars of the flor de mayo type beans grown under rainfed conditions. the trial was established during 2008 under rainfall conditions in two locations in the state of guanajuato: celaya (1 785 masl) and ocampo (2 200 masl), as well as one in san luis potosí, in villa de arriaga (2 200 masl). a complete random block design was used. at the locations in guanajuato, phenological characteristics and reactions to diseases were established, and in all three locations, seed yield and the weight of 100 seeds were determined; also, the iron and zinc contents were established in one seed sample for each material. significant differences (p< 0.01) were observed for seed yield, weight of 100 seeds, and iron and zinc seed content for the effects of location, genotype and the interaction of both. throughout locations, the greatest yield, > 1 3 00 kg ha-1 was obtained by accessions rcg08001, rca06001 and rcz06001. the highest weight for 100 seeds was found in rcslp 08001, with 40.2 g. for mineral content, outstanding accessions were rcg 08011 and rcz06001 with > 65 and 40 ppm for fe and zn, respectively. in comparison to the checks, accessions displayed a long growth cycle and susceptibility to rust and halo blight.
Características agronómicas y contenido de Fe y Zn en el grano de frijol tipo Rosa de Castilla (Phaseolus vulgaris L.) Agronomic traits and Fe and Zn content in the grain of common Rosa de Castilla type bean (Phaseolus vulgaris L.)
Yanet Jiménez-Hernández,Jorge Alberto Acosta-Gallegos,Bertha María Sánchez-García,Miguel ángel Martínez Gami?o
Revista mexicana de ciencias agrícolas , 2012,
Abstract: El frijol de tipo Rosa de Castilla (RC) es popular en áreas de Guanajuato, San Luis Potosí y Zacatecas, donde se produce bajo temporal. El objetivo fue comparar características agronómicas de 22 colectas de tipo RC con dos variedades mejoradas de tipo Flor de Mayo (FM) bajo condiciones de temporal. El experimento se estableció en 2008 en dos localidades de Guanajuato, Celaya (1 785 msnm) y Ocampo (2 200 msnm) y una de San Luis Potosí, Villa de Arriaga (2 200 msnm). Se utilizó un dise o de bloques completos al azar. En las localidades de Guanajuato se determinaron características fenologicas y la reacción a enfermedades y en las tres se determino el rendimiento y peso de 100 semillas y a una muestra de semilla de cada material se le determino el contenido de hierro y Zinc. Se observaron diferencias significativas (p< 0.01) para rendimiento, peso de 100 semillas y contenido de hierro y zinc en el grano entre localidades, genotipos y para la interacción genotipo x localidad. A través de localidades, el mayor rendimiento, > 1 300 kg ha-1, lo obtuvieron las colectas RCG08001, RCA06001 y RCZ06001. El promedio del peso de 100 semillas más alto lo obtuvo la colecta RCSLP 08001 con 40.2 g. Las colectas sobresalientes por contenido de minerales fueron RCG 08011 y RCZ06001 con más de 65 y 40 ppm para Fe y Zn, respectivamente. En comparación con los testigos, las colectas mostraron ciclo largo y susceptibilidad a la roya y al tizón de halo. The 'Rosa de Castilla' type bean is popular in areas of Guanajuato, San Luis Potosí and Zacatecas, where it is produced under rainfed conditions. The aim of this research was to compare the agronomic characteristics of 22 RC accessions with two bred cultivars of the Flor de Mayo type beans grown under rainfed conditions. The trial was established during 2008 under rainfall conditions in two locations in the state of Guanajuato: Celaya (1 785 masl) and Ocampo (2 200 masl), as well as one in San Luis Potosí, in Villa de Arriaga (2 200 masl). A complete random block design was used. At the locations in Guanajuato, phenological characteristics and reactions to diseases were established, and in all three locations, seed yield and the weight of 100 seeds were determined; also, the iron and zinc contents were established in one seed sample for each material. Significant differences (p< 0.01) were observed for seed yield, weight of 100 seeds, and iron and zinc seed content for the effects of location, genotype and the interaction of both. Throughout locations, the greatest yield, > 1 3 00 kg ha-1 was obtained by accessions RCG08001, RCA
Caracterización física, culinaria y nutricional de frijol del altiplano subhúmedo de México
Pérez Herrera,Patricia; Esquivel Esquivel,Gilberto; Rosales Serna,Rigoberto; Acosta-Gallegos,Jorge A.;
Archivos Latinoamericanos de Nutrición , 2002,
Abstract: physical, culinary and nutritional characterization in dry bean from the semiarid highlands of mexico. in the improvement of a given crop species, knowledge on the grain quality and related traits in the progenitors used in the breeding process is needed to establish their usefulness as a source of a given character, and as well as to plan the proper combinations between progenitors. the aim of the present research was to characterize a group of 49 genotypes of phaseolus vulgaris and one of phaseolus coccineus, in relation to physical, cooking and nutritional grain traits. cultivar blanco tlaxcala (p. coccineus) showed a larger grain size and lower protein content than any of the p. vulgaris cultivars. the 86% of the studied genotypes showed cooking times lower to 115 min, and a significant correlation between this trait and water sorption capacity (r=-0.78 **) was found. cultivars redlands pioneer and ica zerinza could be used as source of low cooking time; and perry marrow, kaboon and ica zerinza in the production of low shell content cultivars. genotypes g 2333, negro lolotla, ren 27 and j 117 showed the highest grain protein content. on the other hand, by 94022, pinto villa and negro 150 had the lowest trypsin inhibitor activity. results support the possible use of the above genotypes as sources of those grain traits. in general, large variability was found for most of the quality traits determined; therefore, there is scope for improvement through recombination and selection.
Habilidad de estimación de los métodos de evapotranspiración para una zona semiárida del centro de México
Vásquez-Méndez, Rebeca;Ventura-Ramos, Eusebio Jr.;Acosta-Gallegos, Jorge A.;
Revista mexicana de ciencias agrícolas , 2011,
Abstract: in arid and semiarid areas, the evapotranspiration process constitutes a major loss of water to the atmosphere, prompting the need for a better understanding and quantification of this phenomenon, especially in semiarid environments where water resources are scarce. there are many available methods to estimate evapotranspiration; however, their performance in specific environments must be evaluated before making a selection. a weather station was used to collect data from a semiarid zone of central mexico with the purpose to evaluate eight different methods for daily, weekly and monthly periods of observation. the estimated results were compared with measured data from an et gage company, as this device has been calibrated and proven to be closely associated to reference evapotranspiration data. the mean absolute error, root mean squared error, regression line intercept and slope, as well as determination coefficient r2, were obtained to statistically evaluate the performance of evaluated methods. a poor performance for all time scales was found for the oudin, mcguinness, jensen and haise, and romanenko methods, with high values of mean absolute error and root mean squared error. low values of the intercept, slope and r2 parameters were also obtained for such methods, making them not suitable and consequently not suited for the study area. on the other hand, the penman-monteith and penman methods, showed the best performance in different time scales. similar results have been fund by other authors, supporting penman-monteith as a method of reference. a multiple regression equation to predict reference from climatic variables was also obtained with r2= 0.8, 0.82 and 0.91 for daily, weekly and monthly scales, respectively, indicating the possibility of using regression models for semiarid conditions.
Habilidad de estimación de los métodos de evapotranspiración para una zona semiárida del centro de México Suitability of evapotranspiration estimation methods for semiarid central Mexico
Rebeca Vásquez-Méndez,Eusebio Jr. Ventura-Ramos,Jorge A. Acosta-Gallegos
Revista mexicana de ciencias agrícolas , 2011,
Abstract: En zonas áridas y semiáridas, el proceso de evapotranspiración constituye una gran pérdida de agua hacia la atmósfera, por lo que existe una necesidad por entender y cuantificar este proceso, especialmente en los ambientes semiáridos donde los recursos hídricos son escasos. Muchos métodos para estimar la evapotranspiración están disponibles; sin embargo, su desempe o bajo un ambiente específico tiene que ser evaluado antes de realizar una selección. Se utilizó una estación metereológica para tomar datos de una zona semiárida del centro de México, con el propósito de evaluar ocho diferentes métodos a una escala de observación diaria, semanal y mensual. Los resultados estimados se compararon con datos medidos de un ET gage company, ya que este instrumento ha sido calibrado y probado de estar estrechamente asociado a los datos de evapotranspiración de referencia. El error absoluto medio, el error de la media cuadrática, la intercepción y pendiente de la regresión lineal y el coeficiente de determinación R2, fueron obtenidos para evaluar estadísticamente el desempe o de los métodos evaluados. Se encontró un bajo desempe o para todas las escalas de tiempo de los métodos Oudin, McGuinness, Jensen y Haise, y Romanenko, con altos valores de error absoluto medio y error de la media cuadrática. Parámetros de valores bajos de intercepción, pendiente y R2; fueron obtenidos también para estos métodos, haciéndolos impropios y por lo tanto no recomendables para el área de estudio. Por otra parte, los métodos Penman-Monteith y Penman, mostraron el mejor desempe o a diferentes escalas de tiempo. Resultados similares se han encontrado por otros autores, apoyando el método de referencia de Penman-Monteith. Se obtuvo una ecuación de regresión múltiple para predecir la evapotranspiración de referencia derivada de las variables climáticas, con valores de R2= 0.8, 0.82 y 0.91 para escalas diarias, semanales y mensuales, respectivamente, indicando la posibilidad de usar modelos de regresión para condiciones semiáridas. In arid and semiarid areas, the evapotranspiration process constitutes a major loss of water to the atmosphere, prompting the need for a better understanding and quantification of this phenomenon, especially in semiarid environments where water resources are scarce. There are many available methods to estimate evapotranspiration; however, their performance in specific environments must be evaluated before making a selection. A weather station was used to collect data from a semiarid zone of Central Mexico with the purpose to evaluate eight different methods for d
Dinámica de los tizones común y de halo del frijol en el Valle de México
Prudencio-Sains, José Manuel;Navarrete-Maya, Rosa;Navarrete-Maya, Jorge;Acosta-Gallegos, Jorge Alberto;
Agricultura técnica en México , 2008,
Abstract: the objectives of this research were 1) to study the dynamics of the diseases bean common and halo blight during the crop cycle at the valley of mexico, under rainfed conditions and 2) to identify resistant cultivars to both bacterial diseases. eleven bean cultivars, from different origin and contrasting growth habit, were sown on june 10, 2001 at texcoco, state of mexico. incidence and disease severity were recorded at different growth stages and the incidence rate and area under disease progress curve (audpc) were also estimated. all cultivars showed incidence of both diseases, that of halo blight was higher than 50% from the end of flowering onwards, and common blight reached the same level until the beginning of seed filling. there was not relationship between disease susceptibility and cultivar growth habit. seed yield was negatively affected by the development of both diseases and halo blight had a larger negative impact. the audpc described with major precision the effect of the diseases on the bean crop, in comparison with punctual readings of incidence and severity. tolerant cultivars against both diseases were bayo madero, negro 8025 and pinto villa.
Patotipos de Colletotrichum lindemuthianum y su implicación en la generación de cultivares resistentes de frijol
Rodríguez-Guerra, Raúl;Acosta-Gallegos, Jorge Alberto;González-Chavira, Mario Martín;Simpson, June;
Agricultura técnica en México , 2006,
Abstract: colletotrichum lindemuthianum, the causal agent of bean anthracnose causes substantial losses in the production of this legume around the world. the main strategy for the control of this pathogen is the use of resistant cultivars. the great variety of pathotypes shown by c. lindemuthianum hampers the wider utilization of resistant cultivars developed for specific regions and resistant to specific local c. lindemuthianum pathotypes already characterized. therefore, the success of breeding programs requires the identification of the pathotypes that are present in the regions for which resistant cultivars will be developed and to use sources of resistance genes against the prevalent pathotypes. the objectives of this essay are: i) make known the frequency and distribution of the c. lindemuthianum pathotypes identified in mexico to date, ii) point out possible sources of resistance within the set of differential cultivars used for pathotype identification of the fungus, which could be used in breeding programs in common bean, iii) postulate the resistance genes carried by bean cultivars previously characterized on the basis of their reaction to pathotypes of the fungus. this information offers researchers and bean breeders the opportunity to select sources of resistance to the pathogen and the possibility of accumulating resistance genes in improved cultivars of commercial value for different regions of mexico. an example could be the incorporation of the resistance genes from the differentials kaboon (co-12) and tu (co-5) into improved cultivars or the combination of genes from elite cultivars such as negro inifap (postulated to carry the genes co-12 or co13) and negro 8025 (postulated to carry the genes co-6 or co-8) in the generation of black seeded cultivars resistant to the majority of c. linde muthianum pathotypes found in the country.
Efecto del riego suplementario en la producción de biomasa y grano de frijol de temporal en Zacatecas, México
Acosta-Díaz, Efraín;Acosta-Gallegos, Jorge Alberto;Amador-Ramírez, Mario Domingo;Padilla-Ramírez, José Saúl;
Agricultura técnica en México , 2009,
Abstract: in the semiarid highlands of north-central mexico, the lack of water for agricultural production is an important problem, particularly since annually a depletion of two m in the water mirror of local wells is taking place and the water storage capacity in dams is limited. because of the above situation, the optimization of water resources through supplemental irrigation in critical stages of bean sown under rainfed conditions is important. the aim of the present research was to determine the effect of supplemental irrigation on shoot biomass accumulation and seed yield in two sets of improved cultivars with different seed type. two experiments were established at cezac experiment station in zacatecas, mexico in 2001; nine black-seeded cultivars were evaluated in one trial, and 14 seed colored cultivars in a second one. all cultivars are of the type iii indeterminate growth habit. two soil moisture levels were utilized: 1) rainfall plus supplemental irrigation and 2) natural rainfall conditions. the rainfall plus supplemental irrigation treatment consisted of maintaining the available soil moisture above 50% throughout the crop-growing season, which was achieved by rainfall plus two irrigations, one at pre- and the second at the flowering stages. the natural rainfall treatment depended only on the rainfall occurred during the growing season. in both experiments, average shoot biomass accumulation and seed yield of the rainfall plus supplemental irrigation were significantly higher (p<0.01) than those in the rainfall treatment. in general, black seeded cultivars, that were significantly later to mature (p<0.05), showed higher shoot dry weight and seed yield in response to the treatment rainfed+supplemental irrigation than the colored cultivars. there was a differential response of the cultivars to the moisture treatments; outstanding black seeded cultivars were negro zacatecas, negro ontiveros and negro z524 from the mesoamerican race, while among seed colored cultiva
Drought resistance of tropical dry black bean lines and cultivars
López-Salinas, Ernesto;Tosquy-Valle, Oscar H.;Acosta-Gallegos, Jorge A.;Villar-Sánchez, Bernardo;Ugalde-Acosta, Francisco J;
Tropical and subtropical agroecosystems , 2011,
Abstract: the objectives of this research were to classify black seeded dry bean genotypes for their drought tolerance and to identify those with the highest seed yield efficiency under irrigated and drought stressed conditions. during the 2008 winter-spring growing season two experiments were carried out at medellín de bravo, veracruz; one was irrigated during the whole growing cycle, whereas in the other one, irrigation was withheld from the onset of flowering. nine lines, six improved cultivars and the 'arbolito' landrace (local control) were evaluated using a randomized complete block design with three replications. data recorded included days to physiological maturity, seedless aerial dry biomass production, number of pods per plant, weight of 100 seeds and seed yield. analysis of variance for the irrigated and drought stressed conditions, as well as combined analysis were performed. the drought susceptibility index (dsi) and the relative efficiency index (rei) were used as efficiency criteria. under irrigated conditions, negro inifap, 82l-17-18, negro tacaná and negro veracruz were the most productive genotypes with more than 1.0 t ha-1. under drought conditions, the last two genotypes along with line dor 448 were the most productive with a seed yield higher than 400 kg ha-1. on average, the yield obtained under drought conditions was 37.7% of that under irrigation. with dsi values of 0.71, 0.85 and 0.87, lines dor-448, ngo 17-99 and icta ju-97-1, respectively, were considered as drought tolerant. under both moisture conditions, negro tacaná and negro veracruz with rei values of 1.67 and 1.47, respectively, showed the highest seed yield efficiency.
Efecto de la sequía en la producción de biomasa y grano de frijol Drought effect in bean biomass and grain production
Efraín Acosta-Díaz,Ismael Hernández-Torres,Raúl Rodríguez-Guerra,Jorge Alberto Acosta-Gallegos
Revista mexicana de ciencias agrícolas , 2011,
Abstract: La sequía intermitente es el factor que más limita la producción de frijol (Phaseolus vulgaris L.) bajo temporal en México. El objetivo fue determinar el efecto de la sequía sobre la acumulación de biomasa del vástago y el rendimiento de grano en variedades criollas e introducidas de frijol de temporal. Se establecieron dos experimentos, uno con 21 variedades nativas y otro con 15 variedades introducidas, de diferente hábito de crecimiento indeterminado, en la Unidad Académica La Ascensión de la Facultad de Agronomía de la Universidad Autónoma de Nuevo León, México en 2009. Los experimentos se condujeron bajo dos tratamientos de humedad del suelo: riego durante todo el ciclo y sequía. En el tratamiento de riego el suelo se mantuvo por encima de 60% de humedad aprovechable durante el ciclo del cultivo, mediante la precipitación y cuatro riegos de auxilio (dos antes y otros dos después de floración), mientras que en el tratamiento de sequía el riego se suspendió a partir del inicio de la floración. En los dos experimentos, bajo la condición de sequía la acumulación de biomasa del vástago y el rendimiento de grano fue significativamente inferior (p≤ 0.01) que en el tratamiento de riego. En general, el efecto del tratamiento de sequía sobre el peso seco del vástago fue mayor en las variedades nativas, mientras que el efecto sobre el rendimiento de grano fue mayor en las variedades introducidas. En sequía, las variedades de mayor rendimiento, fueron: nativas, Pinto-2, Pinto-1, Amarillo Mantequilla, Boleado, Bayo Blanco, Canelo y Quipincillo Rojo-1 e introducidas, Peruano, Flor de Mayo Media Oreja, Pinto-5 y Ojo de Cabra. De acuerdo con el índice de susceptibilidad a la sequía y la media geométrica, las variedades más eficientes para la producción de rendimiento de grano en ambas condiciones de humedad fueron: Pinto-2, Amarillo Mantequilla, Pinto-1, Boleado, Peruano, Flor de Mayo Media Oreja, Pinto-5 y Ojo de Cabra; sin excepción, todas estas variedades fueron colectadas en la región de prueba, lo que demuestra la importancia de la adaptación local en condiciones de sequía. Intermittent drought is most limiting factor for bean production (Phaseolus vulgaris L.) under seasonal conditions in Mexico. Aim of this work was to determine drought effect on biomass accumulation of sprout and grain yield in creole and introduced seasonal bean varieties. Two experiments were set, one with 21 native varieties and another with 15 introduced varieties, from different uncertain type growth habit, at Academic Unit La Asención from Agronomy School of Universidad Autónoma de Nu
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