Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions
Understanding the heterosis in multiple environments between different heterotic groups is of fundamental importance in successful maize breeding. A total of 737 hybrids derived from 41 maize inbreds were evaluated over two years, with the aim of assessing the genetic diversity and their performance...
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2022
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/141984 |
| _version_ | 1855536020859125760 |
|---|---|
| author | Zhiqin Sang Zhanqin Zhang Yuxin Yang Zhiwei Li Xiaogang Liu Yunbi Xu Weihua Li |
| author_browse | Weihua Li Xiaogang Liu Yunbi Xu Yuxin Yang Zhanqin Zhang Zhiqin Sang Zhiwei Li |
| author_facet | Zhiqin Sang Zhanqin Zhang Yuxin Yang Zhiwei Li Xiaogang Liu Yunbi Xu Weihua Li |
| author_sort | Zhiqin Sang |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Understanding the heterosis in multiple environments between different heterotic groups is of fundamental importance in successful maize breeding. A total of 737 hybrids derived from 41 maize inbreds were evaluated over two years, with the aim of assessing the genetic diversity and their performance between heterotic groups under drought-stressed (DS) and well-watered (WW) treatments. A total of 38 737 SNPs were employed to assess the genetic diversity. The genetic distance (GD) between the parents ranged from 0.05 to 0.74, and the 41 inbreds were classified into five heterotic groups. According to the hybrid performance (high yield and early maturity between heterotic groups), the heterosis and heterotic patterns of Iowa Stiff Stalk Synthetic (BSSS)×Non-Stiff Stalk (NSS), NSS×Sipingtou (SPT) and BSSS×SPT were identified to be useful options in China's maize breeding. The relative importance of general and specific combining abilities (GCA and SCA) suggests the importance of the additive genetic effects for grain yield traits under the WW treatment, but the non-additive effects under the DS treatment. At least one of the parental lines with drought tolerance and a high GCA effect would be required to achieve the ideal hybrid performance under drought conditions. GD showed a positive correlation with yield and yield heterosis in within-group hybrids over a certain range of GD. The present investigation suggests that the heterosis is due to the combined accumulation of superior genes/alleles in parents and the optimal genetic distance between parents, and that yield heterosis under DS treatment was mainly determined by the non-additive effects. |
| format | Journal Article |
| id | CGSpace141984 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1419842025-12-08T09:54:28Z Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions Zhiqin Sang Zhanqin Zhang Yuxin Yang Zhiwei Li Xiaogang Liu Yunbi Xu Weihua Li drought stress genetic distance heterosis maize Understanding the heterosis in multiple environments between different heterotic groups is of fundamental importance in successful maize breeding. A total of 737 hybrids derived from 41 maize inbreds were evaluated over two years, with the aim of assessing the genetic diversity and their performance between heterotic groups under drought-stressed (DS) and well-watered (WW) treatments. A total of 38 737 SNPs were employed to assess the genetic diversity. The genetic distance (GD) between the parents ranged from 0.05 to 0.74, and the 41 inbreds were classified into five heterotic groups. According to the hybrid performance (high yield and early maturity between heterotic groups), the heterosis and heterotic patterns of Iowa Stiff Stalk Synthetic (BSSS)×Non-Stiff Stalk (NSS), NSS×Sipingtou (SPT) and BSSS×SPT were identified to be useful options in China's maize breeding. The relative importance of general and specific combining abilities (GCA and SCA) suggests the importance of the additive genetic effects for grain yield traits under the WW treatment, but the non-additive effects under the DS treatment. At least one of the parental lines with drought tolerance and a high GCA effect would be required to achieve the ideal hybrid performance under drought conditions. GD showed a positive correlation with yield and yield heterosis in within-group hybrids over a certain range of GD. The present investigation suggests that the heterosis is due to the combined accumulation of superior genes/alleles in parents and the optimal genetic distance between parents, and that yield heterosis under DS treatment was mainly determined by the non-additive effects. 2022 2024-05-21T15:44:17Z 2024-05-21T15:44:17Z Journal Article https://hdl.handle.net/10568/141984 en Open Access application/pdf Elsevier Sang, Z., Zhang, Z., Yang, Y., Li, Z., Liu, X., Xu, Y., & Li, W. (2022). Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions. Journal of Integrative Agriculture, 21(9), 2477–2491. https://doi.org/10.1016/j.jia.2022.07.006 |
| spellingShingle | drought stress genetic distance heterosis maize Zhiqin Sang Zhanqin Zhang Yuxin Yang Zhiwei Li Xiaogang Liu Yunbi Xu Weihua Li Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions |
| title | Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions |
| title_full | Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions |
| title_fullStr | Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions |
| title_full_unstemmed | Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions |
| title_short | Heterosis and heterotic patterns of maize germplasm revealed by a multiple-hybrid population under well-watered and drought-stressed conditions |
| title_sort | heterosis and heterotic patterns of maize germplasm revealed by a multiple hybrid population under well watered and drought stressed conditions |
| topic | drought stress genetic distance heterosis maize |
| url | https://hdl.handle.net/10568/141984 |
| work_keys_str_mv | AT zhiqinsang heterosisandheteroticpatternsofmaizegermplasmrevealedbyamultiplehybridpopulationunderwellwateredanddroughtstressedconditions AT zhanqinzhang heterosisandheteroticpatternsofmaizegermplasmrevealedbyamultiplehybridpopulationunderwellwateredanddroughtstressedconditions AT yuxinyang heterosisandheteroticpatternsofmaizegermplasmrevealedbyamultiplehybridpopulationunderwellwateredanddroughtstressedconditions AT zhiweili heterosisandheteroticpatternsofmaizegermplasmrevealedbyamultiplehybridpopulationunderwellwateredanddroughtstressedconditions AT xiaogangliu heterosisandheteroticpatternsofmaizegermplasmrevealedbyamultiplehybridpopulationunderwellwateredanddroughtstressedconditions AT yunbixu heterosisandheteroticpatternsofmaizegermplasmrevealedbyamultiplehybridpopulationunderwellwateredanddroughtstressedconditions AT weihuali heterosisandheteroticpatternsofmaizegermplasmrevealedbyamultiplehybridpopulationunderwellwateredanddroughtstressedconditions |