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dc.contributorJighly, Abdul-Qaderen_US
dc.contributorBan, Tomohiroen_US
dc.creatorAlagu, Manickaveluen_US
dc.identifier.citationManickavelu Alagu, Abdul-Qader Jighly, Tomohiro Ban. (25/11/2014). Molecular evaluation of orphan Afghan common wheat (Triticum aestivum L. ) landraces collected by Dr. Kihara using single nucleotide polymorphic markers. BMC Plant Biology, 14: 320.en_US
dc.description.abstractAbstract Background Landraces are an important source of genetic diversity in common wheat, but archival collections of Afghan wheat landraces remain poorly characterised. The recent development of array based marker systems, particularly single nucleotide polymorphism (SNP) markers, provide an excellent tool for examining the genetic diversity of local populations. Here we used SNP analysis to demonstrate the importance of Afghan wheat landraces and found tremendous genetic diversity and province-specific characteristics unique to this geographic region. Results A total of 446 Afghan wheat landraces were analysed using genotype by sequencing (GBS) arrays containing ~10 K unique markers. Pair-wise genetic distance analyses revealed significant genetic distances between landraces, particularly among those collected from distanced provinces. From these analyses, we were able to divide the landraces into 14 major classes, with the greatest degree of diversity evident among landraces isolated from Badakhshan province. Population-based analyses revealed an additional 15 sub-populations within our germplasm, and significant correlations were evident in both the provincial and botanical varieties. Genetic distance analysis was used to identify differences among provinces, with the strongest correlations seen between landraces from Herat and Ghor province, followed closely by those between Badakhshan and Takhar provinces. This result closely resembles existing agro-climatic zones within Afghanistan, as well as the wheat varieties commonly cultivated within these regions. Molecular variance analysis showed a higher proportion of intra-province variation among landraces compared with variation among all landraces as a whole. Conclusion The SNP analyses presented here highlight the importance and genetic diversity of Afghan wheat landraces. Furthermore, these data strongly refute a previous analysis that suggested low genetic diverse within this germplasm. Ongoing analyses include phenotypic characterisation of these landraces to identify functional traits associated with individual genotypes. Taken together, these analyses can be used to help improve wheat cultivation in Afghanistan, while providing insights into the evolution and selective pressures underlying these distinct landraces.en_US
dc.publisherBioMed Centralen_US
dc.sourceBMC Plant Biology;14:320,(2014)en_US
dc.subjectsingle nucleotide polymorphismen_US
dc.subjectafghan wheat landracesen_US
dc.subjectbotanical varietiesen_US
dc.subjectgenetic diversityen_US
dc.titleMolecular evaluation of orphan Afghan common wheat (Triticum aestivum L.) landraces collected by Dr. Kihara using single nucleotide polymorphic markersen_US
dc.typeJournal Articleen_US
cg.subject.agrovocpopulation structureen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerYokohama City University, Kihara Institute for Biological Research - YCUen_US
cg.contributor.crpCGIAR Research Program on Dryland Systems - DSen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionSouthern Asiaen_US
cg.isijournalISI Journalen_US
dc.identifier.statusOpen accessen_US
cg.journalBMC Plant Biologyen_US

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