Genomic regions of durum wheat involved in water productivity
Durum wheat is a staple food of the Mediterranean Basin, mostly cultivated under rainfed conditions. As such, the crop is often exposed to moisture stress. Therefore, the identification of genetic factors controlling the capacity of genotypes to convert moisture into grain yield (i.e., water product...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Oxford University Press (OUP): Policy F - Oxford Open Option D
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/132202 |
| _version_ | 1855535724441370624 |
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| author | Zaim, Meryem Sanchez-Garcia, Miguel Belkadi, Bouchra Filali-Maltouf, Abdelkarim Al-Abdallat, Ayed Kehel, Zakaria Bassi, Filippo |
| author_browse | Al-Abdallat, Ayed Bassi, Filippo Belkadi, Bouchra Filali-Maltouf, Abdelkarim Kehel, Zakaria Sanchez-Garcia, Miguel Zaim, Meryem |
| author_facet | Zaim, Meryem Sanchez-Garcia, Miguel Belkadi, Bouchra Filali-Maltouf, Abdelkarim Al-Abdallat, Ayed Kehel, Zakaria Bassi, Filippo |
| author_sort | Zaim, Meryem |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Durum wheat is a staple food of the Mediterranean Basin, mostly cultivated under rainfed conditions. As such, the crop is often exposed to moisture stress. Therefore, the identification of genetic factors controlling the capacity of genotypes to convert moisture into grain yield (i.e., water productivity) is quintessential to stabilize production despite climatic variations. A global panel of 384 accessions was tested across eighteen Mediterranean environments (Morocco, Lebanon, and Jordan) representing a vast range of moisture levels. The accessions were assigned to water responsiveness classes, with genotypes ‘Responsive to Low Moisture’ reaching an average + 1.5 kg ha -1 mm -1 yield advantage. Genome wide association studies (GWAS) revealed that six loci explained most of this variation. A second validation panel tested under moisture stress confirmed that carrying the positive allele at three loci on chromosomes 1B, 2A, and 7B generated an average water productivity gain of + 2.2 kg ha -1 mm -1. These three loci were tagged by Kompetitive Allele Specific PCR (KASP) markers, and these were used to screen a third independent validation panel composed of elites tested across moisture-stressed sites. The three KASP combined predicted up to 10% of the variation for grain yield at 60% accuracy. These loci are now ready for molecular pyramiding and transfer across cultivars to improve the moisture conversion of durum wheat. |
| format | Journal Article |
| id | CGSpace132202 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Oxford University Press (OUP): Policy F - Oxford Open Option D |
| publisherStr | Oxford University Press (OUP): Policy F - Oxford Open Option D |
| record_format | dspace |
| spelling | CGSpace1322022026-01-15T02:15:49Z Genomic regions of durum wheat involved in water productivity Zaim, Meryem Sanchez-Garcia, Miguel Belkadi, Bouchra Filali-Maltouf, Abdelkarim Al-Abdallat, Ayed Kehel, Zakaria Bassi, Filippo gwas water productivity yield stability qtl moisture stress wide adaptation Durum wheat is a staple food of the Mediterranean Basin, mostly cultivated under rainfed conditions. As such, the crop is often exposed to moisture stress. Therefore, the identification of genetic factors controlling the capacity of genotypes to convert moisture into grain yield (i.e., water productivity) is quintessential to stabilize production despite climatic variations. A global panel of 384 accessions was tested across eighteen Mediterranean environments (Morocco, Lebanon, and Jordan) representing a vast range of moisture levels. The accessions were assigned to water responsiveness classes, with genotypes ‘Responsive to Low Moisture’ reaching an average + 1.5 kg ha -1 mm -1 yield advantage. Genome wide association studies (GWAS) revealed that six loci explained most of this variation. A second validation panel tested under moisture stress confirmed that carrying the positive allele at three loci on chromosomes 1B, 2A, and 7B generated an average water productivity gain of + 2.2 kg ha -1 mm -1. These three loci were tagged by Kompetitive Allele Specific PCR (KASP) markers, and these were used to screen a third independent validation panel composed of elites tested across moisture-stressed sites. The three KASP combined predicted up to 10% of the variation for grain yield at 60% accuracy. These loci are now ready for molecular pyramiding and transfer across cultivars to improve the moisture conversion of durum wheat. 2023-10-11T19:17:10Z 2023-10-11T19:17:10Z Journal Article https://hdl.handle.net/10568/132202 en Open Access application/pdf Oxford University Press (OUP): Policy F - Oxford Open Option D Meryem Zaim, Miguel Sanchez-Garcia, Bouchra Belkadi, Abdelkarim Filali-Maltouf, Ayed Al-Abdallat, Zakaria Kehel, Filippo Bassi. (13/9/2023). Genomic regions of durum wheat involved in water productivity. Journal of Experimental Botany. |
| spellingShingle | gwas water productivity yield stability qtl moisture stress wide adaptation Zaim, Meryem Sanchez-Garcia, Miguel Belkadi, Bouchra Filali-Maltouf, Abdelkarim Al-Abdallat, Ayed Kehel, Zakaria Bassi, Filippo Genomic regions of durum wheat involved in water productivity |
| title | Genomic regions of durum wheat involved in water productivity |
| title_full | Genomic regions of durum wheat involved in water productivity |
| title_fullStr | Genomic regions of durum wheat involved in water productivity |
| title_full_unstemmed | Genomic regions of durum wheat involved in water productivity |
| title_short | Genomic regions of durum wheat involved in water productivity |
| title_sort | genomic regions of durum wheat involved in water productivity |
| topic | gwas water productivity yield stability qtl moisture stress wide adaptation |
| url | https://hdl.handle.net/10568/132202 |
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