Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement
Wheat ( Triticum aestivum L.) is a major staple crop in East Africa (EA) providing 9% and 10% of daily calories and protein intake, respectively. However, EA countries depend on import to meet 55% of their domestic wheat supplies due to increasing demands and low domestic yields. To determine the be...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Springer
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/129341 |
| _version_ | 1855535321625657344 |
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| author | Wamalwa, Mercy Tadesse, Zerihun Muthui, Lucy Yao, Nasser Zegeye, Habtemariam Randhawa, Mandeep S. Wanyera, Ruth Uauy, Cristobal Shorinola, Oluwaseyi |
| author_browse | Muthui, Lucy Randhawa, Mandeep S. Shorinola, Oluwaseyi Tadesse, Zerihun Uauy, Cristobal Wamalwa, Mercy Wanyera, Ruth Yao, Nasser Zegeye, Habtemariam |
| author_facet | Wamalwa, Mercy Tadesse, Zerihun Muthui, Lucy Yao, Nasser Zegeye, Habtemariam Randhawa, Mandeep S. Wanyera, Ruth Uauy, Cristobal Shorinola, Oluwaseyi |
| author_sort | Wamalwa, Mercy |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Wheat ( Triticum aestivum L.) is a major staple crop in East Africa (EA) providing 9% and 10% of daily calories and protein intake, respectively. However, EA countries depend on import to meet 55% of their domestic wheat supplies due to increasing demands and low domestic yields. To determine the beneficial gene pool currently exploited for wheat improvement in EA, we examined the allelic diversity of 39 genes of breeding importance in a collection of 239 wheat cultivars and breeding lines from Kenya and Ethiopia using KASP markers. The assayed genes have been shown to control variations in plant height, thousand kernel weight (TKW), grain protein content, pre-harvest sprouting (PHS), disease resistance, and flowering time. We observed the beneficial alleles of some major genes including Gpc-B1 , Yr5 , Yr15 , Sr26 , and Fhb1 to be missing or present at low frequencies in this population. Furthermore, we validated the effects of the major Rht-1 alleles and TaCKX-D1 in controlling variation in plant height and thousand kernel weight, respectively, under EA conditions. Our results uncover hitherto unexploited allelic diversity that can be used to improve the genetic potential of EA wheat germplasm. This will inform strategies to rapidly mobilize these beneficial alleles for wheat improvement in EA. |
| format | Journal Article |
| id | CGSpace129341 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1293412024-08-27T10:36:47Z Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement Wamalwa, Mercy Tadesse, Zerihun Muthui, Lucy Yao, Nasser Zegeye, Habtemariam Randhawa, Mandeep S. Wanyera, Ruth Uauy, Cristobal Shorinola, Oluwaseyi wheat genes africa east africa genetic improvement improvement bread bread wheat Wheat ( Triticum aestivum L.) is a major staple crop in East Africa (EA) providing 9% and 10% of daily calories and protein intake, respectively. However, EA countries depend on import to meet 55% of their domestic wheat supplies due to increasing demands and low domestic yields. To determine the beneficial gene pool currently exploited for wheat improvement in EA, we examined the allelic diversity of 39 genes of breeding importance in a collection of 239 wheat cultivars and breeding lines from Kenya and Ethiopia using KASP markers. The assayed genes have been shown to control variations in plant height, thousand kernel weight (TKW), grain protein content, pre-harvest sprouting (PHS), disease resistance, and flowering time. We observed the beneficial alleles of some major genes including Gpc-B1 , Yr5 , Yr15 , Sr26 , and Fhb1 to be missing or present at low frequencies in this population. Furthermore, we validated the effects of the major Rht-1 alleles and TaCKX-D1 in controlling variation in plant height and thousand kernel weight, respectively, under EA conditions. Our results uncover hitherto unexploited allelic diversity that can be used to improve the genetic potential of EA wheat germplasm. This will inform strategies to rapidly mobilize these beneficial alleles for wheat improvement in EA. 2020-11 2023-03-10T14:33:28Z 2023-03-10T14:33:28Z Journal Article https://hdl.handle.net/10568/129341 en Open Access Springer Wamalwa, Mercy; Tadesse, Zerihun; Muthui, Lucy; Yao, Nasser; Zegeye, Habtemariam; Randhawa, Mandeep; Wanyera, Ruth; Uauy, Cristobal; Shorinola, Oluwaseyi. 2020. Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement. Molecular Breeding 40: |
| spellingShingle | wheat genes africa east africa genetic improvement improvement bread bread wheat Wamalwa, Mercy Tadesse, Zerihun Muthui, Lucy Yao, Nasser Zegeye, Habtemariam Randhawa, Mandeep S. Wanyera, Ruth Uauy, Cristobal Shorinola, Oluwaseyi Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement |
| title | Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement |
| title_full | Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement |
| title_fullStr | Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement |
| title_full_unstemmed | Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement |
| title_short | Allelic diversity study of functional genes in East Africa bread wheat highlights opportunities for genetic improvement |
| title_sort | allelic diversity study of functional genes in east africa bread wheat highlights opportunities for genetic improvement |
| topic | wheat genes africa east africa genetic improvement improvement bread bread wheat |
| url | https://hdl.handle.net/10568/129341 |
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