Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L.)
Breeding hybrids with maximum heterosis requires efficient cross-pollination and an improved male sterility system. Renewed efforts have been made to dissect the phenotypic variation and genetic basis of hybrid floral traits, although the potential of tailoring the appropriate flower design on seed...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
MDPI
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/125866 |
| _version_ | 1855535021293568000 |
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| author | El-Hanafi, Samira Cherkaoui, Souad Kehel, Zakaria Sanchez-Garcia, Miguel Sarazin, Jean-Benoit Baenziger, P. Stephen Tadesse, Wuletaw |
| author_browse | Baenziger, P. Stephen Cherkaoui, Souad El-Hanafi, Samira Kehel, Zakaria Sanchez-Garcia, Miguel Sarazin, Jean-Benoit Tadesse, Wuletaw |
| author_facet | El-Hanafi, Samira Cherkaoui, Souad Kehel, Zakaria Sanchez-Garcia, Miguel Sarazin, Jean-Benoit Baenziger, P. Stephen Tadesse, Wuletaw |
| author_sort | El-Hanafi, Samira |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Breeding hybrids with maximum heterosis requires efficient cross-pollination and an improved male sterility system. Renewed efforts have been made to dissect the phenotypic variation and genetic basis of hybrid floral traits, although the potential of tailoring the appropriate flower design on seed setting is less known. To this end, elite wheat genotypes were crossed using a chemical hybridizing agent at different doses. A total of 23 hybrids were developed from a partial diallel design; and planted in an alpha lattice design with their parents at two locations in Morocco, for two years, to evaluate for yield components, heterosis and combining abilities. The 13.5 L ha−1 dose induced a maximum level of sterility (95%) and seed set showed large phenotypic variation and high heritability. In parallel, seed set showed tight correlation with pollen mass (0.97), visual anther extrusion (0.94) and pollen shedding (0.91) (p < 0.001), allowing direct selection of the associated traits. Using the combined data, mid-parent heterosis ranges were −7.64–14.55% for biomass (BM), −8.34–12.51% for thousand kernel weight (TKW) and −5.29–26.65% for grain yield (YLD); while best-parent heterosis showed ranges of −11.18–7.20%, −11.35–11.26% and −8.27–24.04% for BM, TKW and YLD, respectively. The magnitude of general combining ability (GCA) variance was greater than the specific combining ability (SCA) variance suggesting a greater additive gene action for BM, TKW and YLD. The favorable GCA estimates showed a simple method to predict additive effects contributing to high heterosis and thus could be an effective approach for the selection of promising parents in early generations. |
| format | Journal Article |
| id | CGSpace125866 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1258662026-01-14T02:12:39Z Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L.) El-Hanafi, Samira Cherkaoui, Souad Kehel, Zakaria Sanchez-Garcia, Miguel Sarazin, Jean-Benoit Baenziger, P. Stephen Tadesse, Wuletaw food security health nutrition heterosis seed set goal 2 zero hunger gca sca floral traits hybrid wheat cha Breeding hybrids with maximum heterosis requires efficient cross-pollination and an improved male sterility system. Renewed efforts have been made to dissect the phenotypic variation and genetic basis of hybrid floral traits, although the potential of tailoring the appropriate flower design on seed setting is less known. To this end, elite wheat genotypes were crossed using a chemical hybridizing agent at different doses. A total of 23 hybrids were developed from a partial diallel design; and planted in an alpha lattice design with their parents at two locations in Morocco, for two years, to evaluate for yield components, heterosis and combining abilities. The 13.5 L ha−1 dose induced a maximum level of sterility (95%) and seed set showed large phenotypic variation and high heritability. In parallel, seed set showed tight correlation with pollen mass (0.97), visual anther extrusion (0.94) and pollen shedding (0.91) (p < 0.001), allowing direct selection of the associated traits. Using the combined data, mid-parent heterosis ranges were −7.64–14.55% for biomass (BM), −8.34–12.51% for thousand kernel weight (TKW) and −5.29–26.65% for grain yield (YLD); while best-parent heterosis showed ranges of −11.18–7.20%, −11.35–11.26% and −8.27–24.04% for BM, TKW and YLD, respectively. The magnitude of general combining ability (GCA) variance was greater than the specific combining ability (SCA) variance suggesting a greater additive gene action for BM, TKW and YLD. The favorable GCA estimates showed a simple method to predict additive effects contributing to high heterosis and thus could be an effective approach for the selection of promising parents in early generations. 2022-12-08T16:24:25Z 2022-12-08T16:24:25Z Journal Article https://hdl.handle.net/10568/125866 en Open Access application/pdf MDPI Samira El-Hanafi, Souad Cherkaoui, Zakaria Kehel, Miguel Sanchez-Garcia, Jean-Benoit Sarazin, P. Stephen Baenziger, Wuletaw Tadesse. (14/2/2022). Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L. ). Plants, 11 (4). |
| spellingShingle | food security health nutrition heterosis seed set goal 2 zero hunger gca sca floral traits hybrid wheat cha El-Hanafi, Samira Cherkaoui, Souad Kehel, Zakaria Sanchez-Garcia, Miguel Sarazin, Jean-Benoit Baenziger, P. Stephen Tadesse, Wuletaw Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L.) |
| title | Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L.) |
| title_full | Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L.) |
| title_fullStr | Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L.) |
| title_full_unstemmed | Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L.) |
| title_short | Hybrid Seed Set in Relation with Male Floral Traits, Estimation of Heterosis and Combining Abilities for Yield and Its Components in Wheat (Triticum aestivum L.) |
| title_sort | hybrid seed set in relation with male floral traits estimation of heterosis and combining abilities for yield and its components in wheat triticum aestivum l |
| topic | food security health nutrition heterosis seed set goal 2 zero hunger gca sca floral traits hybrid wheat cha |
| url | https://hdl.handle.net/10568/125866 |
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