A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat
The allelic richness harbored in progenitors of hexaploid bread wheat (Triticum aestivum L.) is a useful resource for addressing the genetic diversity bottleneck in modern cultivars. Synthetic hexaploid wheat (SHW) is created through resynthesis of the hybridisation events between the tetraploid (Tr...
| Autores principales: | , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2024
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/162561 |
| _version_ | 1855539835842854912 |
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| author | Wright, Tally Horsnell, Richard Love, Bethany Burridge, Amanda J. Gardner, Keith A. Jackson, Robert Leigh, Fiona J. Ligeza, Aleksander Heuer, Sigrid Bentley, Alison R. Howell, Philip |
| author_browse | Bentley, Alison R. Burridge, Amanda J. Gardner, Keith A. Heuer, Sigrid Horsnell, Richard Howell, Philip Jackson, Robert Leigh, Fiona J. Ligeza, Aleksander Love, Bethany Wright, Tally |
| author_facet | Wright, Tally Horsnell, Richard Love, Bethany Burridge, Amanda J. Gardner, Keith A. Jackson, Robert Leigh, Fiona J. Ligeza, Aleksander Heuer, Sigrid Bentley, Alison R. Howell, Philip |
| author_sort | Wright, Tally |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The allelic richness harbored in progenitors of hexaploid bread wheat (Triticum aestivum L.) is a useful resource for addressing the genetic diversity bottleneck in modern cultivars. Synthetic hexaploid wheat (SHW) is created through resynthesis of the hybridisation events between the tetraploid (Triticum turgidum subsp. durum Desf.) and diploid (Aegilops tauschii Coss.) bread wheat progenitors. We developed a large and diverse winter wheat nested association mapping (NAM) population (termed the NIAB_WW_SHW_NAM) consisting of 3241 genotypes derived from 54 nested back-cross 1 (BC1) populations, each formed via back-crossing a different primary SHW into the UK winter wheat cultivar ‘Robigus’. The primary SHW lines were created using 15 T. durum donors and 47 Ae. tauschii accessions that spanned the lineages and geographical range of the species. Primary SHW parents were typically earlier flowering, taller and showed better resistance to yellow rust infection (Yr) than ‘Robigus’. The NIAB_WW_SHW_NAM population was genotyped using a single nucleotide polymorphism (SNP) array and 27 quantitative trait loci (QTLs) were detected for flowering time, plant height and Yr resistance. Across multiple field trials, a QTL for Yr resistance was found on chromosome 4D that corresponded to the Yr28 resistance gene previously reported in other SHW lines. These results demonstrate the value of the NIAB_WW_SHW_NAM population for genetic mapping and provide the first evidence of Yr28 working in current UK environments and genetic backgrounds. These examples, coupled with the evidence of commercial wheat breeders selecting promising genotypes, highlight the potential value of the NIAB_WW_SHW_NAM to variety improvement. |
| format | Journal Article |
| id | CGSpace162561 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1625612025-02-26T13:42:24Z A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat Wright, Tally Horsnell, Richard Love, Bethany Burridge, Amanda J. Gardner, Keith A. Jackson, Robert Leigh, Fiona J. Ligeza, Aleksander Heuer, Sigrid Bentley, Alison R. Howell, Philip winter wheat hexaploidy genetic resources data analysis genotypes The allelic richness harbored in progenitors of hexaploid bread wheat (Triticum aestivum L.) is a useful resource for addressing the genetic diversity bottleneck in modern cultivars. Synthetic hexaploid wheat (SHW) is created through resynthesis of the hybridisation events between the tetraploid (Triticum turgidum subsp. durum Desf.) and diploid (Aegilops tauschii Coss.) bread wheat progenitors. We developed a large and diverse winter wheat nested association mapping (NAM) population (termed the NIAB_WW_SHW_NAM) consisting of 3241 genotypes derived from 54 nested back-cross 1 (BC1) populations, each formed via back-crossing a different primary SHW into the UK winter wheat cultivar ‘Robigus’. The primary SHW lines were created using 15 T. durum donors and 47 Ae. tauschii accessions that spanned the lineages and geographical range of the species. Primary SHW parents were typically earlier flowering, taller and showed better resistance to yellow rust infection (Yr) than ‘Robigus’. The NIAB_WW_SHW_NAM population was genotyped using a single nucleotide polymorphism (SNP) array and 27 quantitative trait loci (QTLs) were detected for flowering time, plant height and Yr resistance. Across multiple field trials, a QTL for Yr resistance was found on chromosome 4D that corresponded to the Yr28 resistance gene previously reported in other SHW lines. These results demonstrate the value of the NIAB_WW_SHW_NAM population for genetic mapping and provide the first evidence of Yr28 working in current UK environments and genetic backgrounds. These examples, coupled with the evidence of commercial wheat breeders selecting promising genotypes, highlight the potential value of the NIAB_WW_SHW_NAM to variety improvement. 2024-03 2024-11-21T19:10:01Z 2024-11-21T19:10:01Z Journal Article https://hdl.handle.net/10568/162561 en Open Access application/pdf Springer Wright, T. I. C., Horsnell, R., Love, B., Burridge, A. J., Gardner, K. A., Jackson, R., Leigh, F. J., Ligeza, A., Heuer, S., Bentley, A. R., & Howell, P. (2024). A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat. Theoretical and Applied Genetics, 137(3), 73. https://doi.org/10.1007/s00122-024-04577-1 |
| spellingShingle | winter wheat hexaploidy genetic resources data analysis genotypes Wright, Tally Horsnell, Richard Love, Bethany Burridge, Amanda J. Gardner, Keith A. Jackson, Robert Leigh, Fiona J. Ligeza, Aleksander Heuer, Sigrid Bentley, Alison R. Howell, Philip A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat |
| title | A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat |
| title_full | A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat |
| title_fullStr | A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat |
| title_full_unstemmed | A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat |
| title_short | A new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat |
| title_sort | new winter wheat genetic resource harbors untapped diversity from synthetic hexaploid wheat |
| topic | winter wheat hexaploidy genetic resources data analysis genotypes |
| url | https://hdl.handle.net/10568/162561 |
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