The CIAT Bean Program uses a 3-stage progeny evaluation program asfollows: (a) the VEF, which in 1984 contained 1004 entries distributed in 10 groups according to seed color and size, growth habit (bush or climbing), and climatic adaptation; (b) the EP, which consisted of 446 entries and 38 contr...
El Programa de Frijol del CIAT utiliza un programa de evaluacion de progenie de 3 etapas como sigue: a) el VEF, que en 1984 contenia 1004 entradas distribuidas en 10 grupos segun el color y tamano de la semilla, habito de crecimiento (arbustivo o voluble) y adaptacion climatica; b) el EP, que con...
During 1986, research emphasis was shifted to BGMV while BCMV research focused on the incorporation of blackroot resistance in African germplasm and the backcrossing of I gene into Latin American var. The identification of alternate host plant species for BGMV is critical in the understanding of ...
Durante 1986 el enfasis en investigacion se desplazo hacia BGMV en tanto que la investigacion sobre BCMV se enfoco hacia la incorporacion de la resistencia a la pudricion negra en el germoplasma africano y el retrocruzamiento del gen I a var. latinoamericanas. La identificacion de especies de pla...
International Center for Tropical Agriculture
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[Genetic improvement and related activities. Improvement of individual characters. Resistance to viral diseases]
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Genetic improvement and related activities. Improvement of individual characters. Resistance to viral diseases
During 1986 emphasis was given to testing promising bean germplasm for yields and the 1st materials bred at CIAT specifically for drought tolerance. Preliminary screening was performed under mild stress in the 1st semester, while exceptionally dry weather permitted evaluation under high levels of...
Durante 1986 se dio enfasis a pruebas de germoplasma promisorio de frijol por rendimiento y de los primeros materiales mejorados en CIAT especificamente por tolerancia a la sequia. La seleccion preliminar se efectuo en condiciones de estres leve en el primer semestre, en tanto que condiciones de ...
International Center for Tropical Agriculture
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[Genetic improvement and related activities. Improvement of individual characters. Drought tolerance]
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Genetic improvement and related activities. Improvement of individual characters. Drought tolerance
Progress made in the genetic improvement of Phaseolus vulgaris through interspecific hybridization in 1986 included: (1) the implementation of an international yield trial for P. coccineus to assess the value of this crop, and make new germplasm available for direct use; (2) the identification of...
El avance logrado en mejoramiento genetico de Phaseolus vulgaris a traves de hibridacion interespecifica incluyo: 1) la puesta en practica de un ensayo internacional de rendimiento para P. coccineus para evaluar el valor de este cultivo y poner a disposicion nuevo germoplasma para uso directo; 2)...
International Center for Tropical Agriculture
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[Bean germplasm activities. Variability from interspecific hybridization]
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Bean germplasm activities. Variability from interspecific hybridization
Main activities conducted during 1986 regarding the improvement of individual characters in bean comprised the evaluation of several advanced and segregating bean nurseries for their reactions under field conditions to rust, angular leaf spot, anthracnose, common bacterial blight, and halo blight...
Las principales actividades realizadas durante 1986 en relacion con el mejoramiento de caracteres individuales en frijol comprendieron la evaluacion de algunos viveros de frijol avanzados y segregantes por sus reacciones en condiciones de campo a roya, mancha foliar angular, antracnosis, anublo b...
International Center for Tropical Agriculture
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[Genetic improvement and related activities. Improvement of individual characters. Resistance to fungal and bacterial diseases]
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Genetic improvement and related activities. Improvement of individual characters. Resistance to fungal and bacterial diseases
Evaluation of photoperiod bean response in flowering screening continued at CIAT-Palmira, using artificial 18 h daylengths to delay flowering. Approx. 600 germplasm accessions were evaluated in 1986 as a part of continuing efforts to characterize responses of germplasm in different bean productio...
La evaluacion de la respuesta del frijol al fotoperiodo en la seleccion por floracion continuo en CIAT-Palmira, utilizando fotoperiodos artificiales de 18 h para retrasar la floracion. Se evaluaron aprox. 600 accesiones de germoplasma en 1986 como parte de esfuerzos continuos para caracterizar re...
International Center for Tropical Agriculture
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[Genetic improvement and related activities. Improvement of individual characters. Photoperiod-temperature adaptation]
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Genetic improvement and related activities. Improvement of individual characters. Photoperiod-temperature adaptation
The search for new sources of resistance to Empoasca kraemeri, Acanthoscelides obtectus, Zabrotes subfasciatus, and Apion godmani among bean germplasm materials continued in 1986. Special emphasis was placed on the study of mechanisms of resistance to E. kraemeri, A. obtectus, and Z. subfasciatus...
La busqueda de nuevas fuentes de resistencia a Empoasca kraemeri, Acanthoscelides obtectus, Zabrotes subfasciatus y Apion godmani entre materiales de germoplasma de frijol continuo en 1986. Se le dio especial enfasis al estudio de mecanismos de resistencia a E. kraemeri, A. obtectus y Z. subfasci...
International Center for Tropical Agriculture
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[Genetic improvement and related activities. Improvement of individual characters. Resistance to invertebrate pests]
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Genetic improvement and related activities. Improvement of individual characters. Resistance to invertebrate pests
During early 1986 computer programs were written to manage the expt. part of the bean database. In mid-year the programs were redesigned and recompiled to better access the data. In all, some 53 new dialogs were written to facilitate consultation of the bean database. All of the bean evaluation n...
A principios de 1986, se elaboraron programas de computador para manejar la parte de expt. de la base de datos de frijol. A mediados del mismo ano, se redisenaron y recopilaron dichos programas para tener un mejor acceso a los datos. En total, se elaboraron 53 dialogos para facilitar la consulta ...
Research work carried out by CIAT in 1980 and results obtained are briefly analyzed: acquisition, evaluation, and distribution of germplasm; bush and climbing bean improvement; resistance to viral (BCMV, BYMV, soybean mosaic virus, bean chlorotic mottle virus, and BGMV), fungal (rust, anthracnose...
Se analizan en detalle el trabajo de investigacion realizado en CIAT en 1980 y los resultados obtenidos sobre adquisicion, evaluacion y distribucion de germoplasma; mejoramiento de frijol arbustivo y trepador; resistencia a enfermedades virales (BCMV, BYMV, virus del mosaico de la soya, virus mot...
Research work carried out by CIAT in 1980 and results obtained are briefly analyzed: acquisition, evaluation, and distribution of germplasm; bush and climbing bean improvement; resistance to viral (BCMV, BYMV, soybean mosaic virus, bean chlorotic mottle virus, and BGMV), fungal (rust, anthracnose...
Se analizan en detalle el trabajo de investigacion realizado en CIAT en 1980 y los resultados obtenidos sobre adquisicion, evaluacion y distribucion de germoplasma; mejoramiento de frijol arbustivo y trepador; resistencia a enfermedades virales (BCMV, BYMV, virus del mosaico de la soya, virus mot...
