Genome-wide association study of elite spring bread wheat (triticum aestivum l.) genotypes under drought conditions across different locations

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cg.contributor.affiliationInternational Center for Agricultural Research in the Dry Areasen_US
cg.contributor.affiliationMohammed V Universityen_US
cg.contributor.donorCGIAR System Organizationen_US
cg.contributor.donorCGIAR Trust Funden_US
cg.contributor.initiativeAccelerated Breedingen_US
cg.coverage.countryMoroccoen_US
cg.coverage.iso3166-alpha2MAen_US
cg.coverage.regionNorthern Africaen_US
cg.creator.identifierZakaria, EL Gataa: 0000-0002-2935-2232en_US
cg.creator.identifierSbabou, Laila: 0000-0002-0948-4553en_US
cg.creator.identifierTadesse, Wuletaw: 0000-0003-1175-3502en_US
cg.subject.actionAreaGenetic Innovationen_US
dc.contributor.authorEd-Daoudy, Lamyaeen_US
dc.contributor.authorZakaria, EL Gataaen_US
dc.contributor.authorSbabou, Lailaen_US
dc.contributor.authorTadesse, Wuletawen_US
dc.date.accessioned2024-01-17T17:49:01Zen_US
dc.date.available2024-01-17T17:49:01Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/137884en_US
dc.titleGenome-wide association study of elite spring bread wheat (triticum aestivum l.) genotypes under drought conditions across different locationsen_US
dcterms.abstractDrought, is the main abiotic stressor that significantly reduces bread wheat's grain yield and related-traits. A genome-wide association study was conducted using the 10K wheat SNP markers for grain yield and related traits of 246 spring bread wheat genotypes from ICARDA to identify the genomic regions and marker-trait associations (MTAs) responsible for drought tolerance. Grain yield (GY), days to heading (DHE), days to maturity (DMA), plant height (PLH), and thousand kernel weight (TKW), were evaluated at Merchouch sta tion (Morocco); in the other hand only grain yield that was considered for the rest of the environments; Terbol (Lebanon), Kheferdan (Sudan), and ARC (Egypt), as well as Tassaout, and Sidi El Aidi (Morocco); spanning two years 2015-2016 and 2016-2017, as per variance analysis. Grain yield and related-traits showed a considerable variation among geno types. Moreover, GWAS using a mixed linear model (MLM), revealed 53 MTAs across the six environments on 14 chromosomes. With an average r 2 value of 0.26, Genome D has the highest linkage, followed by Genomes B and A with r2 values of 0.22 and 0.21, respectively. GY had the highest MTA rating (35), followed by TKW (9) and 3 for each of the other agronomic traits (DHE, DMA, PLH) at Merchouch station. “CAP8_c1393_327” was the most significant associated marker correlated with grain yield located on chromosome 3A across Sid El Aidi station. Additionally, the SNP markers “wsnp_Ra_c26091_35652620” displayed extremely significant and stable MTA for TKW on chromosome 5B at Merchouch station. The markers and candidate genes reported throughout this study have the potential to be used in marker-assisted selection to enhance wheat genotypes in terms of yield and resistance to drought limitations.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.available2023-10-23en_US
dcterms.bibliographicCitationLamyae Ed-Daoudy, EL Gataa Zakaria, Laila Sbabou, Wuletaw Tadesse. (23/10/2023). Genome-wide association study of elite spring bread wheat (triticum aestivum l. ) genotypes under drought conditions across different locations.en_US
dcterms.formatPDFen_US
dcterms.languageenen_US
dcterms.licenseCC-BY-SA-4.0en_US
dcterms.subjectgenome-wide associationen_US
dcterms.subjectspring bread wheaten_US
dcterms.subjecttriticum aestivum l.)en_US
dcterms.typePosteren_US

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