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Two trials were conducted to screen germplasm for heat and drought tolerance. In the 1st, the performance of 25 genotypes under terminal drought stress was assessed. Lines A344, A268, A286, BAT 336, A442, BAT 477, Umvoti, and Domino were high-yielding (811, 750, 713, 717, 665, 659, 608, and 667 k...

Se realizaron 2 ensayos para seleccionar germoplasma por tolerancia al calor y a la sequia. En el primero, se evaluo el desempeno de 25 genotipos a estres de sequia terminal. Los genotipos con las producciones mas altas (kg/ha), tolerantes a calor y sequia, fueron A344 (811), A268 (750), A286 (71...

In the 1st of 2 trials, 12 bean genotypes were planted during the rainy season (March) in Matapwata (Thyolo, Malawi). Highest yielding (kg/ha) genotypes were 25-2 (616.8), A286 (476.3), 8-7 (423.1), 29 x P692 (348.3), and 25-2 x 8-7 (306.6). Seed size, except for CIAT lines A286 and A344, varied ...

Se realizaron dos ensayos: en el primero se sembraron 12 genotipos de frijol en la estacion lluviosa (marzo) en Matapwata (Thyolo, Malawi). Los genotipos de mayor produccion (kg/ha) fueron 25-2 (616.8), A286 (476.3), 8-7 (423.1), 29 x P692 (348.3) y 25-2 x 8-7 (306.6). El tamano de las semillas, ...

Twenty-two bean genotypes were assessed in monoculture and in association with maize (NSCM 41) to identify germplasm genotypes from Bunda, Malawi, that synchronize maturity with the end of the growing season. Responses differed among the 3 trial sites (Ng'onga, Bunda, and Matapwata). In general, ...

Se evaluaron 22 genotipos de frijol en monocultivo y en asociacion con maiz (NSCM 41) para identificar genotipos del germoplasma de Bunda, Malawi, que sincronicen madurez con el final de la epoca de cultivo. Las respuestas difirieron entre los 3 sitios del ensayo: Ng'onga, Bunda y Matapwata. En g...

The yield of South African bean lines was assessed in Malawi, using 3 groups with 15 genotypes each. In the 1st trial, carried out in 4 different agroecological zones, Carioca 80 was the best genotype with high yields at all sites (712-1768 kg/ha) and resistant to angular leaf spot and rust. Othe...

Se evaluo el rendimiento de lineas de frijol sudafricanas en Malawi, utilizando 3 grupos con 15 genotipos cada uno. En el primer ensayo, realizado en 4 zonas agroecologicas diferentes, el mejor genotipo fue Carioca 80 con altos rendimientos en todos los sitios (712-1768 kg/ha), con resistencia a ...

A plant breeding program was developed, consisting of the following stages: (1) hybridization for disease resistance; (2) adaptation trial, and (3) screening for resistance. Several variations of Isariopsis griseola existing in Malawi as well as sources of resistance to this fungus were identifie...

Se desarrollo un programa de mejoramiento de frijol siguiendo 1) etapa de hibridizacion por resistencia a enfermedades; 2) ensayo de adaptacion y 3) seleccion por resistencia. Se identificaron algunas variaciones de Isariopsis griseola existentes en Malawi y fuentes de resistencia a este hongo en...

In trials carried out to evaluate the effects of applying 0, 40, 80, and 120 kg N/ha on N uptake by intercropped maize and bean, the N content of 4-wk-old bean plants did not differ significantly among N fertilizer levels and cropping systems. However, there were significant differences among bea...

En ensayos para estudiar los efectos de la aplicacion de 0, 40, 80 y 120 kg de N/ha en la absorcion de este elemento por maiz y frijol en asociacion, el contenido de N en plantas de frijol de 4 semanas no presento diferencias significativas entre niveles de fertilizante y sistemas de cultivo. Sin...

The Malawi Bean Program distributed improved bean var. Sapelekedwa, Nasaka, 8-7, 5-2, and 25-2 x 8-7 among 5 farmers from the vicinity of Bunda College of Agriculture. Sapelekedwa (the only var. released by the program) gave the highest yields (900 kg/ha). Nyauzembe and White Type II (25-2 x 8-7)...

El Programa de Frijol de Malawi distribuyo las var. mejoradas de frijol Sapelekedwa, Nasaka, 8-7, 5-2 y 25-2 x 8-7 entre 5 agricultores de poblaciones de los alrededores del Bunda College of Agriculture. La var. Sapelekedwa (unica liberada por el programa) produjo los mas altos rendimientos (900 ...

Trials were carried out in 7 regions of Malawi (Chitipa, Rumphi, Mzuzu, Mzimba, Liliongwe, Dedza, and Thyolo) with 12 bean genotypes. In Dedza, yields varied from 1305 to 3204 kg/ha; genotypes 21-5, A286, A344, 25-2 x 8-7 gave significantly higher yields than genotypes 5-2, 25-2, and 25-2 x 8-7 a...

Se realizaron ensayos en 7 regiones de Malawi (Chitipa, Rumphi, Mzuzu, Mzimba, Liliongwe, Dedza y Thyolo) de 12 genotipos de frijol. En Dedza los rendimientos variaron de 1305 a 3240 kg/ha; los genotipos 21-5, A286, A344 y 25-2 x 8-7 presentaron rendimientos significativamente mas altos que 5-2, ...