Genetic Mapping Reveals Novel Exotic and Elite QTL Alleles for Salinity Tolerance in Barley
Soil salinity is one of the constraints of crop production in Egypt. The aims of this study were to identify genomic regions associated with grain weight and its related traits along with their salinity tolerance indices and to identify the most salinity tolerant and high-yielding genotypes. Therefo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/11/9/1774 |
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| author | Mohammed Abdelaziz Sayed Saad Mohamed Nassar Ehab Soudi Moustafa Mohamed Tharwat Said Andreas Börner Alhosein Hamada |
| author_facet | Mohammed Abdelaziz Sayed Saad Mohamed Nassar Ehab Soudi Moustafa Mohamed Tharwat Said Andreas Börner Alhosein Hamada |
| author_sort | Mohammed Abdelaziz Sayed |
| collection | DOAJ |
| description | Soil salinity is one of the constraints of crop production in Egypt. The aims of this study were to identify genomic regions associated with grain weight and its related traits along with their salinity tolerance indices and to identify the most salinity tolerant and high-yielding genotypes. Therefore, we evaluated an advanced backcross mapping population of barley in newly reclaimed soil under two salinity levels of groundwater aquifers in South of Sinai, Egypt. We detected significant QTL associated with grain weight related attributes and the salinity tolerance index (STI) distributed throughout the whole genome of barley, which can be used to enhance salinity tolerance. Moreover, the markers bPb-3739 (4H, 96.3 cM), AF043094A (5H, 156 cM), bPb-8161 (7H, 2.22 cM), and bPb-5260 (7H, 115.6 cM), were the most important identified genomic regions corresponding to vernalization, dwarfing and dehydrin genes, which are correlated with salinity tolerance. Additionally, the doubled haploid lines SI001, SI043, SI044, SI028, SI242, SI035, and SI005 had the highest STI values based on yield average. The present study demonstrated that wild and elite barley do harbor novel valuable alleles, which can enrich the genetic basis of cultivated barley and improve quantitative agronomic traits under salinity conditions. |
| first_indexed | 2024-03-10T07:58:44Z |
| format | Article |
| id | doaj.art-13fc389e512c44afaaa114a891c860a8 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T07:58:44Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-13fc389e512c44afaaa114a891c860a82023-11-22T11:38:08ZengMDPI AGAgronomy2073-43952021-09-01119177410.3390/agronomy11091774Genetic Mapping Reveals Novel Exotic and Elite QTL Alleles for Salinity Tolerance in BarleyMohammed Abdelaziz Sayed0Saad Mohamed Nassar1Ehab Soudi Moustafa2Mohamed Tharwat Said3Andreas Börner4Alhosein Hamada5Agronomy Department, Faculty of Agriculture, Assiut University, Assiut 71526, EgyptDesert Research Center, Plant Breeding Unit, Department of Plant Genetic Resources, Cairo 11753, El-Matarya, EgyptDesert Research Center, Plant Breeding Unit, Department of Plant Genetic Resources, Cairo 11753, El-Matarya, EgyptAgronomy Department, Faculty of Agriculture, Assiut University, Assiut 71526, EgyptResources Genetics and Reproduction, Gene Bank, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), D-06466 Seeland, GermanyAgronomy Department, Faculty of Agriculture, Assiut University, Assiut 71526, EgyptSoil salinity is one of the constraints of crop production in Egypt. The aims of this study were to identify genomic regions associated with grain weight and its related traits along with their salinity tolerance indices and to identify the most salinity tolerant and high-yielding genotypes. Therefore, we evaluated an advanced backcross mapping population of barley in newly reclaimed soil under two salinity levels of groundwater aquifers in South of Sinai, Egypt. We detected significant QTL associated with grain weight related attributes and the salinity tolerance index (STI) distributed throughout the whole genome of barley, which can be used to enhance salinity tolerance. Moreover, the markers bPb-3739 (4H, 96.3 cM), AF043094A (5H, 156 cM), bPb-8161 (7H, 2.22 cM), and bPb-5260 (7H, 115.6 cM), were the most important identified genomic regions corresponding to vernalization, dwarfing and dehydrin genes, which are correlated with salinity tolerance. Additionally, the doubled haploid lines SI001, SI043, SI044, SI028, SI242, SI035, and SI005 had the highest STI values based on yield average. The present study demonstrated that wild and elite barley do harbor novel valuable alleles, which can enrich the genetic basis of cultivated barley and improve quantitative agronomic traits under salinity conditions.https://www.mdpi.com/2073-4395/11/9/1774barleysalinity indicesquantitative trait locus/loci (QTL)salinity tolerance |
| spellingShingle | Mohammed Abdelaziz Sayed Saad Mohamed Nassar Ehab Soudi Moustafa Mohamed Tharwat Said Andreas Börner Alhosein Hamada Genetic Mapping Reveals Novel Exotic and Elite QTL Alleles for Salinity Tolerance in Barley Agronomy barley salinity indices quantitative trait locus/loci (QTL) salinity tolerance |
| title | Genetic Mapping Reveals Novel Exotic and Elite QTL Alleles for Salinity Tolerance in Barley |
| title_full | Genetic Mapping Reveals Novel Exotic and Elite QTL Alleles for Salinity Tolerance in Barley |
| title_fullStr | Genetic Mapping Reveals Novel Exotic and Elite QTL Alleles for Salinity Tolerance in Barley |
| title_full_unstemmed | Genetic Mapping Reveals Novel Exotic and Elite QTL Alleles for Salinity Tolerance in Barley |
| title_short | Genetic Mapping Reveals Novel Exotic and Elite QTL Alleles for Salinity Tolerance in Barley |
| title_sort | genetic mapping reveals novel exotic and elite qtl alleles for salinity tolerance in barley |
| topic | barley salinity indices quantitative trait locus/loci (QTL) salinity tolerance |
| url | https://www.mdpi.com/2073-4395/11/9/1774 |
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