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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...

The Great Lakes Regional Bean Program works with the agricultural research institutions of Burundi, Rwanda, and Zaire. Advanced breeding lines were introduced as potential new var. for the region and/or as sources of resistance to angular leaf spot, anthracnose, Ascochyta leaf spot, halo and BCMV...

In 1985 3 new cv. (Frijolica 0-3.1, Frijolica 0-3.2, and Frijolica LS-3.3) were released as a result of collaborative research between the Instituto Colombiano Agropecuario (ICA) and CIAT. At the Centro Regional de Investigacion (CRI)-La Selva (Antioquia, Colombia), 190 new advanced climbing bean...

En 1985 se liberaron 3 nuevos cv. (Frijolica 0-3.1, Frijolica 0- 3.2 y Frijolica LS-3.3), como resultado de investigacion colaborativa entre el Instituto Colombiano Agropecuario (ICA) y CIAT. En el Centro Regional de Investigacion (CRI)-La Selva (Antioquia, Colombia) se codificaron 190 nuevas lin...

The Southern Africa Development Coordination Conference (SADCC) region covers Tanzania, Malawi, Zambia, Zimbabwe, Mozambique, Angola, Botswana, Lesotho, and Swaziland, and is the largest of the 3 regions hosting a CIAT bean program in Africa. Bean production from the SADCC region amounts to about...

La region de Southern Africa Development Coordination Conference (SADCC) comprende a Tanzania, Malawi, Zambia, Zimbabwe, Mozambique, Angola, Botswana, Lesotho y Swazilandia, y es la region mas grande de las 3 que tienen un programa de frijol de CIAT en Africa. La produccion de frijol de la region...

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...

CIAT has a collaborative bean breeding project with the Institute for Horticultural Plant Breeding in the Netherlands. In 1986 research was concentrated on incorporating resistance to BCMV into CIAT-bred lines. Testing for beans resistant to the BCMV-Tn strain continued. Selections came from the ...

Ciat tiene un proyecto colaborativo de mejoramiento de frijol con el institute for horticultural plant breeding en los paises bajos. en 1986 la investigacion se concentro en la incorporacion de resistencia a bcmv en lineas mejoradas del ciat. continuan las pruebas para resistencia del frijola la ...

On-farm research activities in 1986 continued in the areas of training, network establishment, methodology adaptation, technology development on-farm, and technology adaptation to specific areas. One early result is a better understanding of the variability in the adaptation of the newly adopted ...

Las actividades de investigacion en fincas en 1986 continuaron en las areas de capacitacion, establecimiento de redes, adaptacion de metodologias, desarrollo de tecnologias a nivel de finca y adaptacion de tecnologias a areas especificas. Un primer resultado constituye un mejor entendimiento de l...

During 1984 a collaborative research effort between CIAT and the National Vegetable Research Station (Wellesbourne, England) was started to broaden the knowledge of halo blight caused by Pseudomonas phaseolicola. Isolates of the halo blight pathogen were collected from bean growing areas of Latin...

Durante 1984 se inicio un esfuerzo de investigacion coloborativo entre CIAT y National Vegetable Research Station (Wellesbourne, Inglaterra), para ampliar el conocimiento del anublo de halo causado por Pseudomonas phaseolicola. Se recolectaron aislamientos del patogeno del anublo de halo en areas...

In 1984, most of the pathology efforts of the CIAT Bean Program concentrated on the evaluation of bean germplasm for their reaction to the main bean pathogens under field conditions in several international nurseries throughout many of the bean growing areas. High priority was given to the most w...

En 1984, la mayoria de los esfuerzos en patologia del Programa de Frijol del CIAT se concentraron en la evaluacion del germoplasma de frijol por su reaccion a los principales patogenos del frijol en condiciones de campo en varios viveros internacionales en muchas de las areas de cultivo. Se dio a...

The main activities of bean virology at CIAT in 1984 involved screening for BCMV dominant resistance (selection of homozygous BCMV resistant lines), BCMV multiple gene resistance, BCMV recessive gene immunity, and the management and prognosis of other important viral diseases of beans involving t...

Las principales actividades sobre virologia de frijol en CIAT durante 1984 incluyeron seleccion por resistencia dominante al BCMV (seleccion de lineas homocigotas resistentes), por resistencia multiple de genes al BCMV, por inmunidad al gen recesivo de BCMV y el manejo y pronostico de otras enfer...