Tolerancia del frijol común a baja disponibilidad de fósforo en suelos de Veracruz, México
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López, Ernesto
Cumpian Gutierrez, Javier
Durán, Arturo
Acosta-Gallegos, Jorge Alberto
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Universidad de Costa Rica
Abstract
Tolerancia del frijol común a baja disponibilidad de fósforo en suelos de Veracruz, México. Durante dos años se evaluaron genotipos de frijol de diversos orígenes con el objetivo de identificar germoplasma adaptado a suelos ácidos, para el trópico de México. El estudio se realizó en Isla, Veracruz durante los ciclos agrícolas 1993-94 y 1994-95 en condiciones de humedad residual. EI primer año se evaluaron 234 materiales y 134 el segundo. Se utilizaron diseños experimentales de Iatice simples duplicados, dos repeticiones con la adición de cal (1,25 t/ha) y dos sin cal. Para Ia evaluación de genotipos se utilizaron dos índices: Rendimiento relativo (%) = (Fil sin cal lRi con cal)100 y li= (Ri sin cal/promsin) (Ri con cal/prom con). Se identificaron genotipos con altos rendimientos en ambos tratamientos (con y sin cal) como: G-3645, BAT 1467 y Chis. 3-A-1, así como genotipos con respuesta a la adición de cal como: DOR-390 y Phavu-t 125 y materiales con buena respuesta al tratamiento sin cal como: Chis-3-A-4, Chis-117-A e Hgo-67. Este último proveniente del altiplano mexicano, lo que abre las posibilidades de ampliarla base del germoplasma utilizado en el trópico.
Bean tolerance to low P in soils of Veracruz, México. Different bean genotypes were evaluated in orderto identify material adapted to poor agricultural soils, mainly with low phosphorus content for the tropical areas of Mexico. The experiments were conducted in Isla, Veracruz, Mexico during 1993-94 and 1994-95; 234 and 134 bean materials were evaluated respectively. Simple Iatice and duplicated experimental designs were employed in combination with lime (1.25 t/ha) and without it. The variable used for assessing the response of the genotypes were: Relative grain yield (%)= Ri without /Fii with(100), Ii= (Ri without Iime/average without) ( Ri with/ave rage with). Results showed that promising genotypes in both treatments were: G-3645, BAT 1467 and Chis 3-A-1, and the ones with good response to the aplicatíon of lime were: DOR 390 and Phavu-t 125 and the material with good response without lime were: Chis 3-A-4, Chis 1 17-A and Hgo-67. This last genotype is from the Mexican Highlands and giries the apportunity for broadening the germplasm base in the low land tropics.
Bean tolerance to low P in soils of Veracruz, México. Different bean genotypes were evaluated in orderto identify material adapted to poor agricultural soils, mainly with low phosphorus content for the tropical areas of Mexico. The experiments were conducted in Isla, Veracruz, Mexico during 1993-94 and 1994-95; 234 and 134 bean materials were evaluated respectively. Simple Iatice and duplicated experimental designs were employed in combination with lime (1.25 t/ha) and without it. The variable used for assessing the response of the genotypes were: Relative grain yield (%)= Ri without /Fii with(100), Ii= (Ri without Iime/average without) ( Ri with/ave rage with). Results showed that promising genotypes in both treatments were: G-3645, BAT 1467 and Chis 3-A-1, and the ones with good response to the aplicatíon of lime were: DOR 390 and Phavu-t 125 and the material with good response without lime were: Chis 3-A-4, Chis 1 17-A and Hgo-67. This last genotype is from the Mexican Highlands and giries the apportunity for broadening the germplasm base in the low land tropics.
Description
Memorias del taller internacional sobre Bajo Fósforo en el cultivo del frijol, 13 al 15 de noviembre de 1995. Compilación y edición de Rodolfo Araya Villalobos.