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dc.contributorOgbonnaya, Francis Chuksen_US
dc.contributorJighly, Abdul-Qaderen_US
dc.contributorNazari, Kumarseen_US
dc.contributorRajam, Sanjayaen_US
dc.contributorBaum, Michaelen_US
dc.creatorTadesse, Wuletawen_US
dc.identifier.citationWuletaw Tadesse, Francis Chuks Ogbonnaya, Abdul-Qader Jighly, Kumarse Nazari, Sanjaya Rajam, Michael Baum. (8/4/2014). Association Mapping of Resistance to Yellow Rust in Winter Wheat Cultivars and Elite Genotypes. Crop Science, 54 (2), pp. 607-616.en_US
dc.description.abstractYellow (stripe) rust, caused by Puccinia striiformis f.sp. tritici (Pst), is a destructive disease of wheat (Triticum aestivum L.) all over the world, particularly in the Central and West Asia and North Africa (CWANA) region. Host plant resistance is the most economical and environment friendly approach to combating wheat rusts through the deployment of resistant cultivars. In this study, we report findings from an association mapping (AM) study of resistance to Pst in 167 facultative/winter elite wheat genotypes. The genotypes were evaluated for resistance to yellow rust (YR) at the adult plant stage and other agronomic traits for 2 yr (2011–2012) at ICARDA field station, Tel Hadya, Syria. The same genotypes were genotyped using 3051 diversity array technology (DArT) markers of which 1586 were of known chromosome positions. Out of the 167 genotypes evaluated for YR resistance, 65 genotypes (38.9%) were resistant, 20 genotypes (12%) were moderately resistant, 30 genotypes (18%) were moderately susceptible, and 52 genotypes (31.1%) were susceptible. Elite genotypes with high yield potential and YR resistance were identified and have been distributed to the National Agricultural Research System (NARS) for potential direct release and/or use as parents after local adaptation trials by the respective countries. Further, AM analysis using a mixed linear model (MLM), corrected for population structure and kinship relatedness and adjusted for false discovery rate (FDR), identified five genomic regions located on wheat chromosomes 2BL, 4BS, 6AS, 6BL, and 7BL which are significantly associated with genes conferring resistance to YR. The loci located on chromosome 4BS appeared to be a novel quantitative trait loci (QTL). These loci may be useful for choosing parents and incorporating new YR resistance genes into locally adapted wheat cultivars.en_US
dc.publisherCrop Science Society of Americaen_US
dc.sourceCrop Science;54,(2014) Pagination 607,616en_US
dc.subjectelite genotypesen_US
dc.subjectyellow rusten_US
dc.titleAssociation Mapping of Resistance to Yellow Rust in Winter Wheat Cultivars and Elite Genotypesen_US
dc.typeJournal Articleen_US
cg.creator.idTadesse, Wuletaw: 0000-0003-1175-3502en_US
cg.creator.idNazari, Kumarse: 0000-0001-9348-892Xen_US
cg.creator.idBaum, Michael: 0000-0002-8248-6088en_US
cg.subject.agrovocwinter wheaten_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerGrains Research and Development Corporation - GRDCen_US
cg.contributor.crpCGIAR Research Program on Dryland Systems - DSen_US
cg.contributor.funderInternational Fund for Agricultural Development - IFADen_US
cg.contributor.projectEnhanced small-holder wheat-legume cropping systems to improve food security under changing climate in the drylands of West Asia and North Africaen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionWestern Asiaen_US
dc.identifier.statusLimited accessen_US

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