Utilization of existing genetic variability

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dc.creatorSmithson, James Brady
dc.date1989
dc.date2015-01-28T14:22:02Z
dc.date2015-01-28T14:22:02Z
dc.date.accessioned2026-06-27T14:38:39Z
dc.descriptionThe diversity of bean producing areas in Africa in terms of environments and cropping systems and the nature of existing cultivars are briefly described. The lengths of growing seasons and rainfall, temperature and photoperiod during the growing seasons of bean producing areas are being characterized. These have been combined into an index to map the distributions of areas of similar growing conditions in Latin America and Africa. Research stations may be classified in a similar manner. Such classifications require refining but are important in directing flows of germplasm and breeding materials between Latin America and Africa and within African national programmes. Knowledge of genotypic responses to environments is necessary to support such classifications. Evaluation of common sets of genotypes across locations and seasons, for example the African Bean Yield Adaptation Nursery (AFBYAN), is one means of obtaining such knowledge. Recent introductions have exhibited dramatic improvements in performance over existing cultivars. Possible strategies for the evaluation of local and introduced germplasm and breeding materials are discussed. (AS)
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/55960
dc.identifier.urihttp://hdl.handle.net/123456789/84198
dc.languageen
dc.publisherSouthern Africa Development Coordination Conference (SADCC)
dc.publisherCentro Internacional de Agricultura Tropical (CIAT), Regional Programme on Beans in Southern Africa
dc.rightsOpen Access
dc.sourceSmithson, J.B. 1989. Utilization of existing genetic variability. In: Smithson, J.B. (ed.). Workshop on Bean Varietal Improvement in Africa (1989, Maseru, Lesotho). Proceedings. Southern Africa Development Coordination Conference (SADCC); Centro Internacional de Agricultura Tropical (CIAT), Regional Programme on Beans in Southern Africa, Arusha, TZ. p. 68-85. (CIAT African workshop series no. 4)
dc.subjectphaseolus vulgaris
dc.subjectplant breeding
dc.subjectgenetic variation
dc.subjectbean nurseries
dc.subjectclimate
dc.subjectmaps
dc.subjectfield experiments
dc.subjectresearch
dc.subjectfitomejoramiento
dc.subjectvariacion genetica
dc.subjectviveros de frijol
dc.subjectclima
dc.subjectmapas
dc.subjectexperimentos de campo
dc.titleUtilization of existing genetic variability
dc.typeConference Paper

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