Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines
Identification of testers is crucial for hybrid maize breeding programme. However, limited information is available about ideal testers for characterising the combining ability of Striga resistant maize inbreds. This study was conducted to assess the relative value of three inbred testers with varyi...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2021
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/114531 |
| _version_ | 1855532742852214784 |
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| author | Afolabi, S. Menkir, A. Oyekunle, M. Abdullahi, U. Gedil, Melaku A Meseka, S. Mengesha Abera, W. |
| author_browse | Abdullahi, U. Afolabi, S. Gedil, Melaku A Mengesha Abera, W. Menkir, A. Meseka, S. Oyekunle, M. |
| author_facet | Afolabi, S. Menkir, A. Oyekunle, M. Abdullahi, U. Gedil, Melaku A Meseka, S. Mengesha Abera, W. |
| author_sort | Afolabi, S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Identification of testers is crucial for hybrid maize breeding programme. However, limited information is available about ideal testers for characterising the combining ability of Striga resistant maize inbreds. This study was conducted to assess the relative value of three inbred testers with varying resistance reactions to Striga for determining the combining ability of Striga resistant inbreds. Ninety testcrosses involving 30 Striga resistant inbreds and three testers were evaluated under artificial and natural Striga infestation and non-infested conditions at two locations for 2 years. Lines x tester interaction was significant (p ≤ .05) for most traits, indicating differential ranking of lines by the testers. The GCA effects of testers for most traits were high, highlighting the predominance of additive gene action in controlling the overall performance of testcrosses. The resistant and tolerant testers exhibited desirable GCA effects, broader testcross performance, greater genetic variances and consistent ranking of testcrosses under both growing conditions than the susceptible tester. These testers can be successfully used for identifying superior Striga resistant inbreds to develop high yielding and resistant hybrids for commercialization. |
| format | Journal Article |
| id | CGSpace114531 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1145312024-05-01T08:18:32Z Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines Afolabi, S. Menkir, A. Oyekunle, M. Abdullahi, U. Gedil, Melaku A Meseka, S. Mengesha Abera, W. hybrids inbred lines maize striga hermonthica Identification of testers is crucial for hybrid maize breeding programme. However, limited information is available about ideal testers for characterising the combining ability of Striga resistant maize inbreds. This study was conducted to assess the relative value of three inbred testers with varying resistance reactions to Striga for determining the combining ability of Striga resistant inbreds. Ninety testcrosses involving 30 Striga resistant inbreds and three testers were evaluated under artificial and natural Striga infestation and non-infested conditions at two locations for 2 years. Lines x tester interaction was significant (p ≤ .05) for most traits, indicating differential ranking of lines by the testers. The GCA effects of testers for most traits were high, highlighting the predominance of additive gene action in controlling the overall performance of testcrosses. The resistant and tolerant testers exhibited desirable GCA effects, broader testcross performance, greater genetic variances and consistent ranking of testcrosses under both growing conditions than the susceptible tester. These testers can be successfully used for identifying superior Striga resistant inbreds to develop high yielding and resistant hybrids for commercialization. 2021-10 2021-08-03T11:37:32Z 2021-08-03T11:37:32Z Journal Article https://hdl.handle.net/10568/114531 en Limited Access Wiley Afolabi, S., Menkir, A., Oyekunle, M., Abdullahi, U., Gedil, M., Meseka, S. & Mengesha, W. (2021). Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines. Plant Breeding, 1-15. |
| spellingShingle | hybrids inbred lines maize striga hermonthica Afolabi, S. Menkir, A. Oyekunle, M. Abdullahi, U. Gedil, Melaku A Meseka, S. Mengesha Abera, W. Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines |
| title | Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines |
| title_full | Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines |
| title_fullStr | Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines |
| title_full_unstemmed | Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines |
| title_short | Assessing performance of white endosperm testers with varying resistance reactions to Striga (Striga hermonthica) for evaluating resistant maize (Zea mays) inbred lines |
| title_sort | assessing performance of white endosperm testers with varying resistance reactions to striga striga hermonthica for evaluating resistant maize zea mays inbred lines |
| topic | hybrids inbred lines maize striga hermonthica |
| url | https://hdl.handle.net/10568/114531 |
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