Genetic sources and loci for Fusarium head blight resistance in bread wheat
Fusarium head blight (FHB) of wheat is an important disease worldwide, affecting the yield, end-use quality and threatening food safety. Genetic resources or stable loci for FHB resistance are still limited in breeding programs. A panel of 265 bread wheat accessions from China, CIMMYT-Mexico and oth...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Frontiers Media
2022
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| Acceso en línea: | https://hdl.handle.net/10568/126663 |
| _version_ | 1855515134633443328 |
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| author | Lei Wu Xinyao He Yi He Peng Jiang Kaijie Xu Xu Zhang Singh, Pawan K. |
| author_browse | Kaijie Xu Lei Wu Peng Jiang Singh, Pawan K. Xinyao He Xu Zhang Yi He |
| author_facet | Lei Wu Xinyao He Yi He Peng Jiang Kaijie Xu Xu Zhang Singh, Pawan K. |
| author_sort | Lei Wu |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Fusarium head blight (FHB) of wheat is an important disease worldwide, affecting the yield, end-use quality and threatening food safety. Genetic resources or stable loci for FHB resistance are still limited in breeding programs. A panel of 265 bread wheat accessions from China, CIMMYT-Mexico and other countries was screened for FHB resistance under 5 field experiments in Mexico and China, and a genome-wide association analysis was performed to identify QTLs associated with FHB resistance. The major locus Fhb1 was significantly associated with FHB severity and Deoxynivalenol content in grains. FHB screening experiments in multiple environments showed that Fhb1-harbouring accessions Sumai3, Sumai5, Ningmai9, Yangmai18 and Tokai66 had low FHB index, disease severity and DON content in grains in response to different Fusarium species and ecological conditions in Mexico and China. Accessions Klein Don Enrique, Chuko and Yumai34 did not have Fhb1 but still showed good FHB resistance and low mycotoxin accumulation. Sixteen loci associated with FHB resistance or DON content in grains were identified on chromosomes 1A, 1B, 2B, 3A, 3D, 4B, 4D, 5A, 5B, 7A, and 7B in multiple environments, explaining phenotypic variation of 4.43–10.49%. The sources with good FHB resistance reported here could be used in breeding programs for resistance improvement in Mexico and China, and the significant loci could be further studied and introgressed for resistance improvement against FHB and mycotoxin accumulation in grains. |
| format | Journal Article |
| id | CGSpace126663 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Frontiers Media |
| publisherStr | Frontiers Media |
| record_format | dspace |
| spelling | CGSpace1266632025-12-08T10:29:22Z Genetic sources and loci for Fusarium head blight resistance in bread wheat Lei Wu Xinyao He Yi He Peng Jiang Kaijie Xu Xu Zhang Singh, Pawan K. mycotoxins vomitoxin breeding disease severity food safety gene frequency genotyping grain inoculation phenotypic variation quantitative trait loci single nucleotide polymorphism genetics Fusarium head blight (FHB) of wheat is an important disease worldwide, affecting the yield, end-use quality and threatening food safety. Genetic resources or stable loci for FHB resistance are still limited in breeding programs. A panel of 265 bread wheat accessions from China, CIMMYT-Mexico and other countries was screened for FHB resistance under 5 field experiments in Mexico and China, and a genome-wide association analysis was performed to identify QTLs associated with FHB resistance. The major locus Fhb1 was significantly associated with FHB severity and Deoxynivalenol content in grains. FHB screening experiments in multiple environments showed that Fhb1-harbouring accessions Sumai3, Sumai5, Ningmai9, Yangmai18 and Tokai66 had low FHB index, disease severity and DON content in grains in response to different Fusarium species and ecological conditions in Mexico and China. Accessions Klein Don Enrique, Chuko and Yumai34 did not have Fhb1 but still showed good FHB resistance and low mycotoxin accumulation. Sixteen loci associated with FHB resistance or DON content in grains were identified on chromosomes 1A, 1B, 2B, 3A, 3D, 4B, 4D, 5A, 5B, 7A, and 7B in multiple environments, explaining phenotypic variation of 4.43–10.49%. The sources with good FHB resistance reported here could be used in breeding programs for resistance improvement in Mexico and China, and the significant loci could be further studied and introgressed for resistance improvement against FHB and mycotoxin accumulation in grains. 2022-09-30 2023-01-06T15:47:46Z 2023-01-06T15:47:46Z Journal Article https://hdl.handle.net/10568/126663 en Open Access application/pdf Frontiers Media Wu, L., He, X., He, Y., Jiang, P., Xu, K., Zhang, X., & Singh, P. K. (2022). Genetic sources and loci for Fusarium head blight resistance in bread wheat. Frontiers in Genetics, 13. https://doi.org/10.3389/fgene.2022.988264 |
| spellingShingle | mycotoxins vomitoxin breeding disease severity food safety gene frequency genotyping grain inoculation phenotypic variation quantitative trait loci single nucleotide polymorphism genetics Lei Wu Xinyao He Yi He Peng Jiang Kaijie Xu Xu Zhang Singh, Pawan K. Genetic sources and loci for Fusarium head blight resistance in bread wheat |
| title | Genetic sources and loci for Fusarium head blight resistance in bread wheat |
| title_full | Genetic sources and loci for Fusarium head blight resistance in bread wheat |
| title_fullStr | Genetic sources and loci for Fusarium head blight resistance in bread wheat |
| title_full_unstemmed | Genetic sources and loci for Fusarium head blight resistance in bread wheat |
| title_short | Genetic sources and loci for Fusarium head blight resistance in bread wheat |
| title_sort | genetic sources and loci for fusarium head blight resistance in bread wheat |
| topic | mycotoxins vomitoxin breeding disease severity food safety gene frequency genotyping grain inoculation phenotypic variation quantitative trait loci single nucleotide polymorphism genetics |
| url | https://hdl.handle.net/10568/126663 |
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