Concurrent enhancement of provitamin A and yield in tropical maize hybrids
Maize is a strategic food crop in sub-Saharan Africa, where vitamin A deficiency affects millions. Significant investments have thus focused on developing maize varieties that provide 50% of the daily vitamin A requirement for vulnerable populations. Despite the release of many provitamin A enriched...
| Autores principales: | , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Frontiers Media
2025
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| Acceso en línea: | https://hdl.handle.net/10568/176283 |
| _version_ | 1855518228297547776 |
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| author | Menkir, A. Dieng, I. Meseka, S.K. Maziya-Dixon, B. Bossey, B. Muhyideen, O. Ewool, M. Coulibaly, M. Mengesha Abera, W. |
| author_browse | Bossey, B. Coulibaly, M. Dieng, I. Ewool, M. Maziya-Dixon, B. Mengesha Abera, W. Menkir, A. Meseka, S.K. Muhyideen, O. |
| author_facet | Menkir, A. Dieng, I. Meseka, S.K. Maziya-Dixon, B. Bossey, B. Muhyideen, O. Ewool, M. Coulibaly, M. Mengesha Abera, W. |
| author_sort | Menkir, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Maize is a strategic food crop in sub-Saharan Africa, where vitamin A deficiency affects millions. Significant investments have thus focused on developing maize varieties that provide 50% of the daily vitamin A requirement for vulnerable populations. Despite the release of many provitamin A enriched maize varieties across Africa, estimates of genetic gains in provitamin A content and grain yield from long-term breeding programs are undocumented. This study analyzed data from 124 provitamin A-enriched hybrids and eight commercial checks recorded over 12 years across diverse environments to estimate genetic gains. Results showed a significant annual increase of 2.05% in provitamin A and 3.54% in β-carotene, alongside a 1.09% reduction in β-cryptoxanthin. Additionally, our breeding program achieved an annual genetic gain of 1.88% in grain yield while simultaneously decreasing silking days by 0.09% and plant aspect score by 0.35%, alongside a 0.31% increase in plant height. We identified 23 hybrids that accumulated 54% to 95% more provitamin A and produced 10% to 30% higher grain yields compared to the best commercial hybrid (COMYH129). These findings demonstrate concurrent genetic gains in both provitamin A content and grain yield, highlighting the potential for further productivity increase and accumulation of beneficial carotenoid to improve human health. |
| format | Journal Article |
| id | CGSpace176283 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Frontiers Media |
| publisherStr | Frontiers Media |
| record_format | dspace |
| spelling | CGSpace1762832025-12-08T10:29:22Z Concurrent enhancement of provitamin A and yield in tropical maize hybrids Menkir, A. Dieng, I. Meseka, S.K. Maziya-Dixon, B. Bossey, B. Muhyideen, O. Ewool, M. Coulibaly, M. Mengesha Abera, W. genetic gain carotenoids provitamins maize zea mays breeding hybrids Maize is a strategic food crop in sub-Saharan Africa, where vitamin A deficiency affects millions. Significant investments have thus focused on developing maize varieties that provide 50% of the daily vitamin A requirement for vulnerable populations. Despite the release of many provitamin A enriched maize varieties across Africa, estimates of genetic gains in provitamin A content and grain yield from long-term breeding programs are undocumented. This study analyzed data from 124 provitamin A-enriched hybrids and eight commercial checks recorded over 12 years across diverse environments to estimate genetic gains. Results showed a significant annual increase of 2.05% in provitamin A and 3.54% in β-carotene, alongside a 1.09% reduction in β-cryptoxanthin. Additionally, our breeding program achieved an annual genetic gain of 1.88% in grain yield while simultaneously decreasing silking days by 0.09% and plant aspect score by 0.35%, alongside a 0.31% increase in plant height. We identified 23 hybrids that accumulated 54% to 95% more provitamin A and produced 10% to 30% higher grain yields compared to the best commercial hybrid (COMYH129). These findings demonstrate concurrent genetic gains in both provitamin A content and grain yield, highlighting the potential for further productivity increase and accumulation of beneficial carotenoid to improve human health. 2025 2025-09-01T10:39:35Z 2025-09-01T10:39:35Z Journal Article https://hdl.handle.net/10568/176283 en Open Access application/pdf Frontiers Media Menkir, A., Dieng, I., Meseka, S.K., Maziya-Dixon, B., Bossey, B., Muhyideen, O., ... & Mengesha Abera, W. (2025). Concurrent enhancement of provitamin A and yield in tropical maize hybrids. Frontiers in Plant Science, 16: 1611495, 1-13. |
| spellingShingle | genetic gain carotenoids provitamins maize zea mays breeding hybrids Menkir, A. Dieng, I. Meseka, S.K. Maziya-Dixon, B. Bossey, B. Muhyideen, O. Ewool, M. Coulibaly, M. Mengesha Abera, W. Concurrent enhancement of provitamin A and yield in tropical maize hybrids |
| title | Concurrent enhancement of provitamin A and yield in tropical maize hybrids |
| title_full | Concurrent enhancement of provitamin A and yield in tropical maize hybrids |
| title_fullStr | Concurrent enhancement of provitamin A and yield in tropical maize hybrids |
| title_full_unstemmed | Concurrent enhancement of provitamin A and yield in tropical maize hybrids |
| title_short | Concurrent enhancement of provitamin A and yield in tropical maize hybrids |
| title_sort | concurrent enhancement of provitamin a and yield in tropical maize hybrids |
| topic | genetic gain carotenoids provitamins maize zea mays breeding hybrids |
| url | https://hdl.handle.net/10568/176283 |
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