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
During 1986, activities with Phaseolus in the biotechnology research unit focused on: developing tissue culture techniques for regeneration of bean plants using various organs and tissues; developing electrophoretic techniques for genotype identification; and monitoring research activities in asp...
Durante 1986 las actividades con Phaseolus en la unidad de investigaciones en biotecnologia se enfocaron hacia: el desarrollo de tecnicas de cultivo de tejidos para la regeneracion de plantas de frijol utilizando distintos organos y tejidos; el desarrollo de tecnicas de electroforesis para la ide...
International Center for Tropical Agriculture
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[Bean germplasm activities. Genetic variability from biotechnological techniques]
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Bean germplasm activities. Genetic variability from biotechnological techniques
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
Se presentan los resultados de las investigaciones en frijol de la unidad de biotecnologia del CIAT. Los estudios fueron principalmente sobre: hibridizacion interespecifica, recombinacion entre reservas geneticas, regeneracion de plantas a partir de cultivo de celulas, transformacion genetica, ma...
The collection of Phaseolus of the CIAT Genetic Resources Unit reached a total of 34,312 accessions in 1984. Of these, 89.0 percent corresponds to P. vulgaris, 7.0 percent to P. lunatus, 3.5 percent to P. coccineus, 0.6 percent to P. acutifolius, and 0.2 percent to wild noncultivated species. An ...
La coleccion de Phaseolus de la Unidad de Recursos Geneticos del CIAT alcanzo un total de 34,312 accesiones en 1984. De estas, el 89.0 por ciento corresponde a P. vulgaris, 7.0 por ciento a P. lunatus, 3.5 por ciento a P. coccineus, 0.6 por ciento a P. acutifolius y 0.2 por ciento a especies silv...
International Center for Tropical Agriculture
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[Recolección, multiplicación y distribución de germoplasma]
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Recolección, multiplicación y distribución de germoplasma
During 1986 the emphasis on the acquisition of Phaseolus germplasm continued to be directed to land races and wild species. In addition to intensive expeditionary work in Latin America, several interesting materials from Europe, Asia, and Africa were received. Of the last batch of 6000 new access...
Durante 1986 el enfasis en la adquisicion de germoplasma de Phaseolus se siguio dirigiendo a razas nativas y especies silvestres. Ademas de un trabajo expedicionario intensivo en America Latina, se recibieron varios materiales interesantes de Europa, Asia y Africa. Del ultimo lote de 6000 accesio...
International Center for Tropical Agriculture
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[Actividades con germoplasma de frijol. Colección, multiplicación y distribución de germoplasma]
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Actividades con germoplasma de frijol. Colección, multiplicación y distribución de germoplasma
The status of CIAT bean technology development is analyzed and technology transfer activities in the crop in Latin America are indicated. Each phase in the development of technology that will allow major bean yield increases is discussed, namely the identification of production constraints, germp...
The main activities on Phaseolus beans (in vitro culture techniques and biochemical and molecular markers) conducted in 1988 by CIAT`s Biotechnology Research Unit are summarized. (CIAT)
International Center for Tropical Agriculture
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[Improved small-seeded middle American bean germplasm with less dependence on inputs: Output 1]
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Improved small-seeded middle American bean germplasm with less dependence on inputs: Output 1