An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design
Genetic improvement of maize with elevated levels of zinc (Zn) can reduce Zn deficiency among populations who rely on maize as a staple. Inbred lines of quality protein maize (QPM) and non-QPM with elevated Zn levels in the kernel have been identified. However, information about the optimal strategy...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
MDPI
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/171371 |
| _version_ | 1855521360874307584 |
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| author | Mageto, Edna K. Lee, Michael Dhliwayo, Thanda Palacios-Rojas, Natalia San Vicente, Felix Burgueño, Juan Hallauer, Arnel R. |
| author_browse | Burgueño, Juan Dhliwayo, Thanda Hallauer, Arnel R. Lee, Michael Mageto, Edna K. Palacios-Rojas, Natalia San Vicente, Felix |
| author_facet | Mageto, Edna K. Lee, Michael Dhliwayo, Thanda Palacios-Rojas, Natalia San Vicente, Felix Burgueño, Juan Hallauer, Arnel R. |
| author_sort | Mageto, Edna K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Genetic improvement of maize with elevated levels of zinc (Zn) can reduce Zn deficiency among populations who rely on maize as a staple. Inbred lines of quality protein maize (QPM) and non-QPM with elevated Zn levels in the kernel have been identified. However, information about the optimal strategy to utilize the germplasm in breeding for high-Zn concentration is lacking. As a preliminary step, this study was conducted to ascertain the potential of QPM, non-QPM, or a combination of QPM and non-QPM hybrids for attaining desirable Zn concentration. Twenty elite inbreds, 10 QPM and 10 non-QPM, were crossed according to a modified mating design to generate hybrids, which were evaluated in four environments in Mexico during 2015 and 2016 in order to evaluate their merits as parents of hybrids. The highest mean values of Zn were observed when high-Zn QPM lines were crossed with high-Zn non-QPM lines. Hybrids with high Zn and grain yield were identified. General combining ability (GCA) effects for Zn concentration were more preponderant than specific combining ability (SCA) effects, suggesting the importance of additive gene action for the inheritance of Zn. |
| format | Journal Article |
| id | CGSpace171371 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1713712025-02-19T14:30:59Z An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design Mageto, Edna K. Lee, Michael Dhliwayo, Thanda Palacios-Rojas, Natalia San Vicente, Felix Burgueño, Juan Hallauer, Arnel R. maize zinc kernels genetics combining ability breeding Genetic improvement of maize with elevated levels of zinc (Zn) can reduce Zn deficiency among populations who rely on maize as a staple. Inbred lines of quality protein maize (QPM) and non-QPM with elevated Zn levels in the kernel have been identified. However, information about the optimal strategy to utilize the germplasm in breeding for high-Zn concentration is lacking. As a preliminary step, this study was conducted to ascertain the potential of QPM, non-QPM, or a combination of QPM and non-QPM hybrids for attaining desirable Zn concentration. Twenty elite inbreds, 10 QPM and 10 non-QPM, were crossed according to a modified mating design to generate hybrids, which were evaluated in four environments in Mexico during 2015 and 2016 in order to evaluate their merits as parents of hybrids. The highest mean values of Zn were observed when high-Zn QPM lines were crossed with high-Zn non-QPM lines. Hybrids with high Zn and grain yield were identified. General combining ability (GCA) effects for Zn concentration were more preponderant than specific combining ability (SCA) effects, suggesting the importance of additive gene action for the inheritance of Zn. 2020 2025-01-29T12:58:05Z 2025-01-29T12:58:05Z Journal Article https://hdl.handle.net/10568/171371 en Open Access MDPI Mageto, Edna K.; Lee, Michael; Dhliwayo, Thanda; Palacios-Rojas, Natalia; Vicente, Félix San; Burgueño, Juan; and Hallauer, Arnel R. 2020. An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design. Agronomy 10(5): 695. https://doi.org/10.3390/agronomy10050695 |
| spellingShingle | maize zinc kernels genetics combining ability breeding Mageto, Edna K. Lee, Michael Dhliwayo, Thanda Palacios-Rojas, Natalia San Vicente, Felix Burgueño, Juan Hallauer, Arnel R. An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design |
| title | An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design |
| title_full | An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design |
| title_fullStr | An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design |
| title_full_unstemmed | An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design |
| title_short | An evaluation of kernel zinc in hybrids of elite Quality Protein Maize (QPM) and Non-QPM inbred lines adapted to the tropics based on a mating design |
| title_sort | evaluation of kernel zinc in hybrids of elite quality protein maize qpm and non qpm inbred lines adapted to the tropics based on a mating design |
| topic | maize zinc kernels genetics combining ability breeding |
| url | https://hdl.handle.net/10568/171371 |
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