Genetic improvement and related activities. Improvement of individual characters. Drought tolerance

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dc.creatorInternational Center for Tropical Agriculture
dc.date1987
dc.date2017-06-20T09:01:58Z
dc.date2017-06-20T09:01:58Z
dc.date.accessioned2026-06-27T14:41:25Z
dc.descriptionDuring 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 stress in the 2nd semester. Phaseolus acutifolius lines L172, L174, and L169 gave the highest yields in Palmira and Quilichao, showing their drought tolerance. Given the importance of local adaptation in determining levels of drought tolerance, increased importance has been given to aiding national programs in research of tolerance mechanisms. Basic patterns of response of leaf water potential, stomatal conductance, and canopy temp. in Brazil were similar to those seen at CIAT stations. Results are included in table form. (CIAT)
dc.descriptionDurante 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 tiempo excepcionalmente secas permitieron la evaluacion bajo altos niveles de estres en el segundo semestre. Las lineas de Phaseolus acutifolius L172, L174 y L169 proporcionaron los rendimientos mas altos en Palmira y Quilichao, lo que indica su tolerancia a la sequia. Dada la importancia de la adaptacion local para determinar niveles de tolerancia a la sequia, se le ha dado una mayor importancia a la ayuda de programas nacionales en investigacion de mecanismos de tolerancia. Los patrones basicos de respuesta del potencial hidrico foliar, conductancia estomatica y temp. de la cubierta foliar en Brasil fueron similares a los observados en las estaciones del CIAT. Se incluyen los resultados tabulados. (CIAT)
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/82371
dc.identifier.urihttp://hdl.handle.net/123456789/85532
dc.languageen
dc.publisherInternational Center for Tropical Agriculture
dc.rightsOpen Access
dc.sourceGenetic improvement and related activities. Improvement of individual characters. Drought tolerance . 1987. In: Centro Internacional de Agricultura Tropical. Bean Program. Annual Report 1986 . CIAT, Cali, CO. p. 140-144. (Working document no. 21)
dc.subjectphaseolus vulgaris
dc.subjectgermplasm
dc.subjectresistance
dc.subjectdrought
dc.subjectyields
dc.subjectphaseolus acutifolius
dc.subjectadaptation
dc.subjectgermoplasma
dc.subjectresistencia
dc.subjectsequia
dc.subjectrendimiento
dc.subjectadaptación
dc.titleGenetic improvement and related activities. Improvement of individual characters. Drought tolerance
dc.typeBook Chapter

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Centro Internacional de Agricultura Tropical (CIAT)