Durum wheat heat tolerance loci defined via a north–south gradient
The global production of durum wheat (Triticum durum Desf.) is hindered by a constant rise in the frequency of severe heat stress events. To identify heat-tolerant germplasm, three different germplasm panels (“discovery,” “investigation,” and “validation”) were studied under a range of heat-stressed...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Crop Science Society of America
2024
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| Acceso en línea: | https://hdl.handle.net/10568/159771 |
| _version_ | 1855519282731941888 |
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| author | Sall, Amadou T. Kabbaj, Hafssa ould Ely Menoum, Sidi Cisse, Madiama Geleta, Mulatu Ortiz, Rodomiro Bassi, Filippo |
| author_browse | Bassi, Filippo Cisse, Madiama Geleta, Mulatu Kabbaj, Hafssa Ortiz, Rodomiro Sall, Amadou T. ould Ely Menoum, Sidi |
| author_facet | Sall, Amadou T. Kabbaj, Hafssa ould Ely Menoum, Sidi Cisse, Madiama Geleta, Mulatu Ortiz, Rodomiro Bassi, Filippo |
| author_sort | Sall, Amadou T. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The global production of durum wheat (Triticum durum Desf.) is hindered by a constant rise in the frequency of severe heat stress events. To identify heat-tolerant germplasm, three different germplasm panels (“discovery,” “investigation,” and “validation”) were studied under a range of heat-stressed conditions. Grain yield (GY) and its components were recorded at each site and a heat stress susceptibility index was calculated, confirming that each 1°C temperature rise corresponds to a GY reduction in durum wheat of 4.6%–6.3%. A total of 2552 polymorphic single nucleotide polymorphisms (SNPs) defined the diversity of the first panel, while 5642 SNPs were polymorphic in the “investigation panel.” The use of genome-wide association studies revealed that 36 quantitative trait loci were associated with the target traits in the discovery panel, of which five were confirmed in a “subset” tested imposing heat stress by plastic tunnels, and in the investigation panel. A study of allelic combinations confirmed that Q.icd.Heat.003-1A, Q.icd.Heat.007-1B, and Q.icd.Heat.016-3B are additive in nature and the positive alleles at all three loci resulted in a 16% higher GY under heat stress. The underlying SNPs were converted into kompetitive allele specific PCR markers and tested on the validation panel, confirming that each explained up to 9% of the phenotypic variation for GY under heat stress. These markers can now be used for breeding to improve resilience to climate change and increase productivity in heat-stressed areas. |
| format | Journal Article |
| id | CGSpace159771 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Crop Science Society of America |
| publisherStr | Crop Science Society of America |
| record_format | dspace |
| spelling | CGSpace1597712026-01-15T02:04:36Z Durum wheat heat tolerance loci defined via a north–south gradient Sall, Amadou T. Kabbaj, Hafssa ould Ely Menoum, Sidi Cisse, Madiama Geleta, Mulatu Ortiz, Rodomiro Bassi, Filippo heat tolerance durum wheat triticum durum desf The global production of durum wheat (Triticum durum Desf.) is hindered by a constant rise in the frequency of severe heat stress events. To identify heat-tolerant germplasm, three different germplasm panels (“discovery,” “investigation,” and “validation”) were studied under a range of heat-stressed conditions. Grain yield (GY) and its components were recorded at each site and a heat stress susceptibility index was calculated, confirming that each 1°C temperature rise corresponds to a GY reduction in durum wheat of 4.6%–6.3%. A total of 2552 polymorphic single nucleotide polymorphisms (SNPs) defined the diversity of the first panel, while 5642 SNPs were polymorphic in the “investigation panel.” The use of genome-wide association studies revealed that 36 quantitative trait loci were associated with the target traits in the discovery panel, of which five were confirmed in a “subset” tested imposing heat stress by plastic tunnels, and in the investigation panel. A study of allelic combinations confirmed that Q.icd.Heat.003-1A, Q.icd.Heat.007-1B, and Q.icd.Heat.016-3B are additive in nature and the positive alleles at all three loci resulted in a 16% higher GY under heat stress. The underlying SNPs were converted into kompetitive allele specific PCR markers and tested on the validation panel, confirming that each explained up to 9% of the phenotypic variation for GY under heat stress. These markers can now be used for breeding to improve resilience to climate change and increase productivity in heat-stressed areas. 2024-03-01 2024-11-14T17:19:04Z 2024-11-14T17:19:04Z Journal Article https://hdl.handle.net/10568/159771 en Open Access application/pdf Crop Science Society of America Amadou T. Sall, Hafssa Kabbaj, Sidi ould Ely Menoum, Madiama Cisse, Mulatu Geleta, Rodomiro Ortiz, Filippo Bassi. (1/3/2024). Durum wheat heat tolerance loci defined via a north–south gradient. The Plant Genome, 17 (1). |
| spellingShingle | heat tolerance durum wheat triticum durum desf Sall, Amadou T. Kabbaj, Hafssa ould Ely Menoum, Sidi Cisse, Madiama Geleta, Mulatu Ortiz, Rodomiro Bassi, Filippo Durum wheat heat tolerance loci defined via a north–south gradient |
| title | Durum wheat heat tolerance loci defined via a north–south gradient |
| title_full | Durum wheat heat tolerance loci defined via a north–south gradient |
| title_fullStr | Durum wheat heat tolerance loci defined via a north–south gradient |
| title_full_unstemmed | Durum wheat heat tolerance loci defined via a north–south gradient |
| title_short | Durum wheat heat tolerance loci defined via a north–south gradient |
| title_sort | durum wheat heat tolerance loci defined via a north south gradient |
| topic | heat tolerance durum wheat triticum durum desf |
| url | https://hdl.handle.net/10568/159771 |
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