Existing bean variability and breeding activities at CIAT for new genetic combinations
Assembled germplasm has provided breeders with valuable traits for the improvement of common beans. Molecular markers such as phaseolin and isozymes have facilitated understanding of the genus Phaseolus thus enabling breeders to develop more effective strategies. However, there are still gaps in the...
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| Format: | Conference Paper |
| Language: | Inglés |
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Southern Africa Development Coordination Conference (SADCC)
1989
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| Online Access: | https://hdl.handle.net/10568/55946 |
| _version_ | 1855523061464301568 |
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| author | Tohme, Joseph M. |
| author_browse | Tohme, Joseph M. |
| author_facet | Tohme, Joseph M. |
| author_sort | Tohme, Joseph M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Assembled germplasm has provided breeders with valuable traits for the improvement of common beans. Molecular markers such as phaseolin and isozymes have facilitated understanding of the genus Phaseolus thus enabling breeders to develop more effective strategies. However, there are still gaps in the collections that have been assembled and in available information. Strategies for conservation need to be coordinated among international and national programs to prevent further genetic erosion of collected germplasm. Duplication of germplasm collections is vital. New sources of genetic variability not present in existing cultivars have been identified and transferred to adapted backgrounds. Wild accessions of P. vulgaris have provided genetic variability and sources of resistance not yet found in cultivated beans. At CIAT, the diversification of sources of resistance to several diseases and insects is well advanced. Broad and stable resistance is being sought. These new resistant sources are deployed through international nurseries which also serve to monitor pathogen variability. (AS) |
| format | Conference Paper |
| id | CGSpace55946 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1989 |
| publishDateRange | 1989 |
| publishDateSort | 1989 |
| publisher | Southern Africa Development Coordination Conference (SADCC) |
| publisherStr | Southern Africa Development Coordination Conference (SADCC) |
| record_format | dspace |
| spelling | CGSpace559462024-01-09T09:48:29Z Existing bean variability and breeding activities at CIAT for new genetic combinations Tohme, Joseph M. phaseolus vulgaris plant breeding germplasm genetic variation gene pools cultivars selection resistance xanthomonas campestris phaseoli colletotrichum lindemuthianum bean common mosaic virus ophiomyia zabrotes subfasciatus empoasca ascochyta bacterial diseases coleoptera diseases and pathogens injurious insects mycoses noxious animals pests viroses fitomejoramiento germoplasma variacion genetica reservas geneticas variedades selección resistencia virus del mosaico común frijol Assembled germplasm has provided breeders with valuable traits for the improvement of common beans. Molecular markers such as phaseolin and isozymes have facilitated understanding of the genus Phaseolus thus enabling breeders to develop more effective strategies. However, there are still gaps in the collections that have been assembled and in available information. Strategies for conservation need to be coordinated among international and national programs to prevent further genetic erosion of collected germplasm. Duplication of germplasm collections is vital. New sources of genetic variability not present in existing cultivars have been identified and transferred to adapted backgrounds. Wild accessions of P. vulgaris have provided genetic variability and sources of resistance not yet found in cultivated beans. At CIAT, the diversification of sources of resistance to several diseases and insects is well advanced. Broad and stable resistance is being sought. These new resistant sources are deployed through international nurseries which also serve to monitor pathogen variability. (AS) 1989 2015-01-28T14:22:00Z 2015-01-28T14:22:00Z Conference Paper https://hdl.handle.net/10568/55946 en Open Access Southern Africa Development Coordination Conference (SADCC) Centro Internacional de Agricultura Tropical (CIAT), Regional Programme on Beans in Southern Africa Tohme, J.M. 1989. Existing bean variability and breeding activities at CIAT for new genetic combinations. 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. 9-22. (CIAT African workshop series no. 4) |
| spellingShingle | phaseolus vulgaris plant breeding germplasm genetic variation gene pools cultivars selection resistance xanthomonas campestris phaseoli colletotrichum lindemuthianum bean common mosaic virus ophiomyia zabrotes subfasciatus empoasca ascochyta bacterial diseases coleoptera diseases and pathogens injurious insects mycoses noxious animals pests viroses fitomejoramiento germoplasma variacion genetica reservas geneticas variedades selección resistencia virus del mosaico común frijol Tohme, Joseph M. Existing bean variability and breeding activities at CIAT for new genetic combinations |
| title | Existing bean variability and breeding activities at CIAT for new genetic combinations |
| title_full | Existing bean variability and breeding activities at CIAT for new genetic combinations |
| title_fullStr | Existing bean variability and breeding activities at CIAT for new genetic combinations |
| title_full_unstemmed | Existing bean variability and breeding activities at CIAT for new genetic combinations |
| title_short | Existing bean variability and breeding activities at CIAT for new genetic combinations |
| title_sort | existing bean variability and breeding activities at ciat for new genetic combinations |
| topic | phaseolus vulgaris plant breeding germplasm genetic variation gene pools cultivars selection resistance xanthomonas campestris phaseoli colletotrichum lindemuthianum bean common mosaic virus ophiomyia zabrotes subfasciatus empoasca ascochyta bacterial diseases coleoptera diseases and pathogens injurious insects mycoses noxious animals pests viroses fitomejoramiento germoplasma variacion genetica reservas geneticas variedades selección resistencia virus del mosaico común frijol |
| url | https://hdl.handle.net/10568/55946 |
| work_keys_str_mv | AT tohmejosephm existingbeanvariabilityandbreedingactivitiesatciatfornewgeneticcombinations |