Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm
Maize has been targeted as one of the major crops for provitamin enrichment and delivery because it is an inexpensive and easily available source of food for millions of people in sub-Saharan Africa. Although tropical-adapted yellow maize contains provitamin-A carotenoids that can be converted into...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2017
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/81023 |
| _version_ | 1855524087214899200 |
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| author | Menkir, A. Maziya-Dixon, B.B. Mengesha, W. Rocheford, T. Alamu, Emmanuel Oladeji |
| author_browse | Alamu, Emmanuel Oladeji Maziya-Dixon, B.B. Mengesha, W. Menkir, A. Rocheford, T. |
| author_facet | Menkir, A. Maziya-Dixon, B.B. Mengesha, W. Rocheford, T. Alamu, Emmanuel Oladeji |
| author_sort | Menkir, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Maize has been targeted as one of the major crops for provitamin enrichment and delivery because it is an inexpensive and easily available source of food for millions of people in sub-Saharan Africa. Although tropical-adapted yellow maize contains provitamin-A carotenoids that can be converted into vitamin A in the human body, they represent less than 25% of the total carotenoids in most widely grown and consumed maize cultivars in Africa. Novel genes conditioning high concentration of β-carotene and other carotenoids were then continually introduced from the temperate zone and tropics to boost provitamin A in tropical-adapted maize. Several promising inbred lines developed from backcrosses involving diverse exotic donor lines displayed provitamin A concentrations that match or surpass the current breeding target of 15 μg g−1. Some of these lines attained high provitamin A content by accumulating mainly high β-carotene while others contained high provitamin A by promoting accumulation of high levels of both carotenes and xanthophylls. Several inbred lines with intermediate to high levels of provitamin A have already been used to develop hybrids and synthetics without compromising grain yield and other adaptive traits that are required to profitably cultivate maize by farmers in West and Central Africa. |
| format | Journal Article |
| id | CGSpace81023 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace810232024-05-01T08:17:07Z Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm Menkir, A. Maziya-Dixon, B.B. Mengesha, W. Rocheford, T. Alamu, Emmanuel Oladeji genetic gain exotic germlasm provitamin a enrichment carotenes xanthophylls Maize has been targeted as one of the major crops for provitamin enrichment and delivery because it is an inexpensive and easily available source of food for millions of people in sub-Saharan Africa. Although tropical-adapted yellow maize contains provitamin-A carotenoids that can be converted into vitamin A in the human body, they represent less than 25% of the total carotenoids in most widely grown and consumed maize cultivars in Africa. Novel genes conditioning high concentration of β-carotene and other carotenoids were then continually introduced from the temperate zone and tropics to boost provitamin A in tropical-adapted maize. Several promising inbred lines developed from backcrosses involving diverse exotic donor lines displayed provitamin A concentrations that match or surpass the current breeding target of 15 μg g−1. Some of these lines attained high provitamin A content by accumulating mainly high β-carotene while others contained high provitamin A by promoting accumulation of high levels of both carotenes and xanthophylls. Several inbred lines with intermediate to high levels of provitamin A have already been used to develop hybrids and synthetics without compromising grain yield and other adaptive traits that are required to profitably cultivate maize by farmers in West and Central Africa. 2017-05 2017-05-15T09:33:21Z 2017-05-15T09:33:21Z Journal Article https://hdl.handle.net/10568/81023 en Limited Access Springer Menkir, A., Maziya-Dixon, B., Mengesha, W., Rocheford, T. & Alamu, E.O. (2017). Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm. Euphytica, 213(5), 105. |
| spellingShingle | genetic gain exotic germlasm provitamin a enrichment carotenes xanthophylls Menkir, A. Maziya-Dixon, B.B. Mengesha, W. Rocheford, T. Alamu, Emmanuel Oladeji Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm |
| title | Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm |
| title_full | Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm |
| title_fullStr | Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm |
| title_full_unstemmed | Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm |
| title_short | Accruing genetic gain in pro-vitamin A enrichment from harnessing diverse maize germplasm |
| title_sort | accruing genetic gain in pro vitamin a enrichment from harnessing diverse maize germplasm |
| topic | genetic gain exotic germlasm provitamin a enrichment carotenes xanthophylls |
| url | https://hdl.handle.net/10568/81023 |
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