A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria
A procedure is described for the rapid development of inbred lines to be used as parents of high-yielding hybrid cultivars of maize (Zea mays L.). This procedure involves the production of S1 lines from three unrelated populations A, B, C whose Fl hybrids are known a priori to demonstrate significan...
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Faculty of Agriculture, University of Ife
2015
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| _version_ | 1810764566723821568 |
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| author | Fakorede, M. A. B. |
| author_facet | Fakorede, M. A. B. |
| author_sort | Fakorede, M. A. B. |
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| description | A procedure is described for the rapid development of inbred lines to be used as parents of high-yielding hybrid cultivars of maize (Zea mays L.). This procedure involves the production of S1 lines from three unrelated populations A, B, C whose Fl hybrids are known a priori to demonstrate significant yield heterosis. The S, lines are evaluated per se and S2 lines obtained from the best performing 5 or more S1 lines from a population are intercrossed with those-from the other populations to give 75 or more S2 x S2 crosses. The S2 x S2 crosses are evaluated with check cultivars (e.g. cultivar hybrids, the best widely grown cultivar and single-cross hybrids, if available) and the top 5 are selected for the National Zonal Maize Yield Trials (NZMYT) coordinated by the National Cereals Research Institute (NCRI), Ibadan. S4 x S4 hybrids of these top 5 selections are evaluated in the NZMYT as well as several other locations available to the researcher and inbred lines of the best 1 or 2 hybrids are released as parent materials. The advantages of this procedure include (i) simultaneous inbreeding and evaluation trials, (ii) flexibility for concurrent population improvement and extraction of inbredlines, and (iii) with two rainfed cropping seasons and an off-season with irrigation facilities, near-homozygous inbred lines (F 0.99) can be obtained within 3 calendar years. |
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| id | oai:ir.oauife.edu.ng:123456789-2587 |
| institution | My University |
| language | English |
| publishDate | 2015 |
| publisher | Faculty of Agriculture, University of Ife |
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| spelling | oai:ir.oauife.edu.ng:123456789-25872023-05-13T11:04:47Z A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria Fakorede, M. A. B. Maize Maize breeders Hybrid cultivars of maize A procedure is described for the rapid development of inbred lines to be used as parents of high-yielding hybrid cultivars of maize (Zea mays L.). This procedure involves the production of S1 lines from three unrelated populations A, B, C whose Fl hybrids are known a priori to demonstrate significant yield heterosis. The S, lines are evaluated per se and S2 lines obtained from the best performing 5 or more S1 lines from a population are intercrossed with those-from the other populations to give 75 or more S2 x S2 crosses. The S2 x S2 crosses are evaluated with check cultivars (e.g. cultivar hybrids, the best widely grown cultivar and single-cross hybrids, if available) and the top 5 are selected for the National Zonal Maize Yield Trials (NZMYT) coordinated by the National Cereals Research Institute (NCRI), Ibadan. S4 x S4 hybrids of these top 5 selections are evaluated in the NZMYT as well as several other locations available to the researcher and inbred lines of the best 1 or 2 hybrids are released as parent materials. The advantages of this procedure include (i) simultaneous inbreeding and evaluation trials, (ii) flexibility for concurrent population improvement and extraction of inbredlines, and (iii) with two rainfed cropping seasons and an off-season with irrigation facilities, near-homozygous inbred lines (F 0.99) can be obtained within 3 calendar years. 2015-09-15T14:35:28Z 2018-10-27T13:56:01Z 2015-09-15T14:35:28Z 2018-10-27T13:56:01Z 1982 Article Fakorede, M. A. B. (1982) A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria. Ife Journal of Agriculture, 4(1 & 2). http://localhost:8080/xmlui/handle/123456789/2587 en PDF application/pdf Nigeria Faculty of Agriculture, University of Ife |
| spellingShingle | Maize Maize breeders Hybrid cultivars of maize Fakorede, M. A. B. A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria |
| title | A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria |
| title_full | A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria |
| title_fullStr | A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria |
| title_full_unstemmed | A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria |
| title_short | A Proposed Procedure for Rapid Development of Inbred Lines for the Production of Hybrid Maize in Nigeria |
| title_sort | proposed procedure for rapid development of inbred lines for the production of hybrid maize in nigeria |
| topic | Maize Maize breeders Hybrid cultivars of maize |
| url | http://localhost:8080/xmlui/handle/123456789/2587 |
| work_keys_str_mv | AT fakoredemab aproposedprocedureforrapiddevelopmentofinbredlinesfortheproductionofhybridmaizeinnigeria AT fakoredemab proposedprocedureforrapiddevelopmentofinbredlinesfortheproductionofhybridmaizeinnigeria |