Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin
Maize (Zea mays L.) is an important crop in sub-Sahara Africa for both human consumption and livestock feed. Maize use is often limited by ear-rotting fungi, some of which produce deleterious secondary metabolites. The aim of this study was to determine the inheritance of resistance to Fusarium vert...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/126073 |
| _version_ | 1855538634996842496 |
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| author | Tembo, E. Minnaar‐Ontong, A. Menkir, A. Marais, G. Magorokosho, Cosmos Labuschagne, Maryke T. |
| author_browse | Labuschagne, Maryke T. Magorokosho, Cosmos Marais, G. Menkir, A. Minnaar‐Ontong, A. Tembo, E. |
| author_facet | Tembo, E. Minnaar‐Ontong, A. Menkir, A. Marais, G. Magorokosho, Cosmos Labuschagne, Maryke T. |
| author_sort | Tembo, E. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Maize (Zea mays L.) is an important crop in sub-Sahara Africa for both human consumption and livestock feed. Maize use is often limited by ear-rotting fungi, some of which produce deleterious secondary metabolites. The aim of this study was to determine the inheritance of resistance to Fusarium verticillioides as an indirect way of selecting for resistance to secondary metabolites such as the mycotoxin fumonisin that is produced by this fungus, under artificial inoculation and natural infection. Twelve inbred lines from Seed Co that were used as the females, were mated to 12 tester lines from the International Institute of Tropical Agriculture (IITA) that were used as males, using the North Carolina Design II. The resulting 144 F1 hybrids and six check hybrids were evaluated in Zimbabwe. Artificial inoculation with F. verticillioides was done at Rattray Arnold Research Station in the first season. The general (GCA) and specific combining ability (SCA) effects for F. verticillioides incidence were variable across sites for the lines and the testers. Six southern African inbred lines had desirable GCA for F. verticillioides ear rot and can be used as resistance sources. Outstanding testers from IITA that had negative GCA for F. verticillioides ear rot and fumonisins were identified. Both additive and nonadditive effects were implicated in resistance to ear rot caused by F. verticillioides and potential lines were identified that can be used in regional breeding programs. |
| format | Journal Article |
| id | CGSpace126073 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1260732025-11-11T10:45:42Z Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin Tembo, E. Minnaar‐Ontong, A. Menkir, A. Marais, G. Magorokosho, Cosmos Labuschagne, Maryke T. maize fusarium sub-saharan africa fungi Maize (Zea mays L.) is an important crop in sub-Sahara Africa for both human consumption and livestock feed. Maize use is often limited by ear-rotting fungi, some of which produce deleterious secondary metabolites. The aim of this study was to determine the inheritance of resistance to Fusarium verticillioides as an indirect way of selecting for resistance to secondary metabolites such as the mycotoxin fumonisin that is produced by this fungus, under artificial inoculation and natural infection. Twelve inbred lines from Seed Co that were used as the females, were mated to 12 tester lines from the International Institute of Tropical Agriculture (IITA) that were used as males, using the North Carolina Design II. The resulting 144 F1 hybrids and six check hybrids were evaluated in Zimbabwe. Artificial inoculation with F. verticillioides was done at Rattray Arnold Research Station in the first season. The general (GCA) and specific combining ability (SCA) effects for F. verticillioides incidence were variable across sites for the lines and the testers. Six southern African inbred lines had desirable GCA for F. verticillioides ear rot and can be used as resistance sources. Outstanding testers from IITA that had negative GCA for F. verticillioides ear rot and fumonisins were identified. Both additive and nonadditive effects were implicated in resistance to ear rot caused by F. verticillioides and potential lines were identified that can be used in regional breeding programs. 2022-09 2022-12-19T09:08:25Z 2022-12-19T09:08:25Z Journal Article https://hdl.handle.net/10568/126073 en Open Access application/pdf Wiley Tembo, E., Minnaar‐Ontong, A., Menkir, A., Marais, G., Magorokosho, C. & Labuschagne, M.T. (2022). Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin. Crop Science, 62(5), 1818-1833. |
| spellingShingle | maize fusarium sub-saharan africa fungi Tembo, E. Minnaar‐Ontong, A. Menkir, A. Marais, G. Magorokosho, Cosmos Labuschagne, Maryke T. Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin |
| title | Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin |
| title_full | Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin |
| title_fullStr | Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin |
| title_full_unstemmed | Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin |
| title_short | Inheritance of resistance to Fusarium verticillioides ear rot in maize inbred lines of southern, west and central Africa origin |
| title_sort | inheritance of resistance to fusarium verticillioides ear rot in maize inbred lines of southern west and central africa origin |
| topic | maize fusarium sub-saharan africa fungi |
| url | https://hdl.handle.net/10568/126073 |
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