Managing angular leaf spot on common bean in Africa by supplementing farmer mixtures with resistant varieties
The effectiveness of supplementing local bean (Phaseolus vulgaris) mixtures with varieties resistant to angular leaf spot, caused by Phaeoisariopsis griseola, was evaluated in the Great Lakes region of Africa. The severity of angular leaf spot was lower (P = 0.05) in farmer mixtures supplemented wit...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Scientific Societies
1992
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/43648 |
| _version_ | 1855519111815102464 |
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| author | Pyndji, MM Trutmann, P. |
| author_browse | Pyndji, MM Trutmann, P. |
| author_facet | Pyndji, MM Trutmann, P. |
| author_sort | Pyndji, MM |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The effectiveness of supplementing local bean (Phaseolus vulgaris) mixtures with varieties resistant to angular leaf spot, caused by Phaeoisariopsis griseola, was evaluated in the Great Lakes region of Africa. The severity of angular leaf spot was lower (P = 0.05) in farmer mixtures supplemented with 25% or more of resistant lines BAT76 or A285 in three of four seasons than in mixtures without resistant lines. Significant decreases in angular leaf spot severity were also obtained in the new mixtures when measuring both original farmer and new resistant lines. The results suggest that important foliar diseases can be controlled with modern plant breeding products in systems where varietal mixtures predominate through supplementation rather than displacement of existing genetic diversity by new varieties. However, the supplementation strategy is also limited, because its indiscriminate use in managing multiple diseases could lead to severe erosion of local genetic diversity. |
| format | Journal Article |
| id | CGSpace43648 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1992 |
| publishDateRange | 1992 |
| publishDateSort | 1992 |
| publisher | Scientific Societies |
| publisherStr | Scientific Societies |
| record_format | dspace |
| spelling | CGSpace436482024-05-01T08:15:57Z Managing angular leaf spot on common bean in Africa by supplementing farmer mixtures with resistant varieties Pyndji, MM Trutmann, P. phaseolus vulgaris disease control phaeoisariopsis plant breeding variety trials control de enfermedades fitomejoramiento ensayos de variedades The effectiveness of supplementing local bean (Phaseolus vulgaris) mixtures with varieties resistant to angular leaf spot, caused by Phaeoisariopsis griseola, was evaluated in the Great Lakes region of Africa. The severity of angular leaf spot was lower (P = 0.05) in farmer mixtures supplemented with 25% or more of resistant lines BAT76 or A285 in three of four seasons than in mixtures without resistant lines. Significant decreases in angular leaf spot severity were also obtained in the new mixtures when measuring both original farmer and new resistant lines. The results suggest that important foliar diseases can be controlled with modern plant breeding products in systems where varietal mixtures predominate through supplementation rather than displacement of existing genetic diversity by new varieties. However, the supplementation strategy is also limited, because its indiscriminate use in managing multiple diseases could lead to severe erosion of local genetic diversity. 1992 2014-09-24T08:42:27Z 2014-09-24T08:42:27Z Journal Article https://hdl.handle.net/10568/43648 en Open Access Scientific Societies |
| spellingShingle | phaseolus vulgaris disease control phaeoisariopsis plant breeding variety trials control de enfermedades fitomejoramiento ensayos de variedades Pyndji, MM Trutmann, P. Managing angular leaf spot on common bean in Africa by supplementing farmer mixtures with resistant varieties |
| title | Managing angular leaf spot on common bean in Africa by supplementing farmer mixtures with resistant varieties |
| title_full | Managing angular leaf spot on common bean in Africa by supplementing farmer mixtures with resistant varieties |
| title_fullStr | Managing angular leaf spot on common bean in Africa by supplementing farmer mixtures with resistant varieties |
| title_full_unstemmed | Managing angular leaf spot on common bean in Africa by supplementing farmer mixtures with resistant varieties |
| title_short | Managing angular leaf spot on common bean in Africa by supplementing farmer mixtures with resistant varieties |
| title_sort | managing angular leaf spot on common bean in africa by supplementing farmer mixtures with resistant varieties |
| topic | phaseolus vulgaris disease control phaeoisariopsis plant breeding variety trials control de enfermedades fitomejoramiento ensayos de variedades |
| url | https://hdl.handle.net/10568/43648 |
| work_keys_str_mv | AT pyndjimm managingangularleafspotoncommonbeaninafricabysupplementingfarmermixtureswithresistantvarieties AT trutmannp managingangularleafspotoncommonbeaninafricabysupplementingfarmermixtureswithresistantvarieties |