Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments
Bread wheat (Triticum aestivum L.) is crucial for food security in North Africa, where climate change and water scarcity threaten its productivity. Optimizing agronomic practices and understanding genetic traits can enhance yield. This study evaluated 159 spring bread wheat genotypes from ICARDA und...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Hapres publisher
2025
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/175161 |
| _version_ | 1855533119326650368 |
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| author | Mostafa, Rania Zakaria, EL Gataa Thabet, Sherif Kehel, Zakaria Al-Shamaa, Khaled Eltaher, Shamseldeen Edris, Sherif Tadesse, Wuletaw |
| author_browse | Al-Shamaa, Khaled Edris, Sherif Eltaher, Shamseldeen Kehel, Zakaria Mostafa, Rania Tadesse, Wuletaw Thabet, Sherif Zakaria, EL Gataa |
| author_facet | Mostafa, Rania Zakaria, EL Gataa Thabet, Sherif Kehel, Zakaria Al-Shamaa, Khaled Eltaher, Shamseldeen Edris, Sherif Tadesse, Wuletaw |
| author_sort | Mostafa, Rania |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Bread wheat (Triticum aestivum L.) is crucial for food security in North Africa, where climate change and water scarcity threaten its productivity. Optimizing agronomic practices and understanding genetic traits can enhance yield. This study evaluated 159 spring bread wheat genotypes from ICARDA under raised bed, flat, and rainfed conditions in Egypt and Morocco. Five traits, including grain yield (GY), were assessed, and a genome-wide association study (GWAS) was performed using 17,968 SNPs. A total of 181 significant marker-trait associations (MTAs) were identified, with the highest under raised beds (148), followed by rainfed (75) and flat (53) conditions. The B genome had the most associations (91). Raised bed conditions yielded an average of 8.7 t/ha, surpassing flats (7.8 t/ha) and rainfed conditions (4.0 t/ha), demonstrating a +1 t/ha advantage. The top-performing genotype, G147, achieved yields of 11.4 t/ha, 10.7 t/ha, and 4.1 t/ha under raised beds, flats, and rainfed conditions, respectively. Genotypes G91 and G87 also showed stable performance. Notably, the marker “AX-94704405” on chromosome 6B (raised beds) and “AX-109853614” on chromosome 6D (rainfed) were significantly associated with GY, making them promising for marker-assisted selection after validation. The identified high-yielding genotypes will be considered for direct release following adaptation trials and for use as parents in breeding programs to enhance wheat productivity under diverse environments. |
| format | Journal Article |
| id | CGSpace175161 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Hapres publisher |
| publisherStr | Hapres publisher |
| record_format | dspace |
| spelling | CGSpace1751612026-01-22T02:11:20Z Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments Mostafa, Rania Zakaria, EL Gataa Thabet, Sherif Kehel, Zakaria Al-Shamaa, Khaled Eltaher, Shamseldeen Edris, Sherif Tadesse, Wuletaw bread wheat genetic variability gwas soft wheat wheat productivity raised bed flat Bread wheat (Triticum aestivum L.) is crucial for food security in North Africa, where climate change and water scarcity threaten its productivity. Optimizing agronomic practices and understanding genetic traits can enhance yield. This study evaluated 159 spring bread wheat genotypes from ICARDA under raised bed, flat, and rainfed conditions in Egypt and Morocco. Five traits, including grain yield (GY), were assessed, and a genome-wide association study (GWAS) was performed using 17,968 SNPs. A total of 181 significant marker-trait associations (MTAs) were identified, with the highest under raised beds (148), followed by rainfed (75) and flat (53) conditions. The B genome had the most associations (91). Raised bed conditions yielded an average of 8.7 t/ha, surpassing flats (7.8 t/ha) and rainfed conditions (4.0 t/ha), demonstrating a +1 t/ha advantage. The top-performing genotype, G147, achieved yields of 11.4 t/ha, 10.7 t/ha, and 4.1 t/ha under raised beds, flats, and rainfed conditions, respectively. Genotypes G91 and G87 also showed stable performance. Notably, the marker “AX-94704405” on chromosome 6B (raised beds) and “AX-109853614” on chromosome 6D (rainfed) were significantly associated with GY, making them promising for marker-assisted selection after validation. The identified high-yielding genotypes will be considered for direct release following adaptation trials and for use as parents in breeding programs to enhance wheat productivity under diverse environments. 2025-06-18T16:04:08Z 2025-06-18T16:04:08Z Journal Article https://hdl.handle.net/10568/175161 en Open Access application/pdf Hapres publisher Rania Mostafa, EL Gataa Zakaria, Sherif Thabet, Zakaria Kehel, Khaled Al-Shamaa, Shamseldeen Eltaher, Sherif Edris, Wuletaw Tadesse. (26/5/2025). Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments. Crop Breeding Genetics and Genomics, 7 (2). |
| spellingShingle | bread wheat genetic variability gwas soft wheat wheat productivity raised bed flat Mostafa, Rania Zakaria, EL Gataa Thabet, Sherif Kehel, Zakaria Al-Shamaa, Khaled Eltaher, Shamseldeen Edris, Sherif Tadesse, Wuletaw Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments |
| title | Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments |
| title_full | Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments |
| title_fullStr | Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments |
| title_full_unstemmed | Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments |
| title_short | Genetic Variation and Association Mapping Studies in Elite Spring Bread Wheat Genotypes for Yield and Other Agronomic Traits under Irrigated and Rainfed Environments |
| title_sort | genetic variation and association mapping studies in elite spring bread wheat genotypes for yield and other agronomic traits under irrigated and rainfed environments |
| topic | bread wheat genetic variability gwas soft wheat wheat productivity raised bed flat |
| url | https://hdl.handle.net/10568/175161 |
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