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dc.contributorImtiaz, Muhammaden_US
dc.contributorHobson, Kristyen_US
dc.contributorKemal, Seid Ahmeden_US
dc.creatorHamwieh, Aladdinen_US
dc.identifier.citationAladdin Hamwieh, Muhammad Imtiaz, Kristy Hobson, Seid Kemal. (27/11/2013). Genetic diversity of microsatellite alleles located at quantitative resistance loci for Ascochyta blight resistance in a global collection of chickpea germplasm. Phytopathologia Mediterranea, 52(1), pp. 183-191.en_US
dc.description.abstractA global collection of 43 chickpea (Cicer arietinum L.) genotypes, resistant and susceptible to Ascochyta blight caused by Ascochyta rabiei was evaluated for the disease under controlled conditions. In this study three known pathotypes (P-I, P-II, and P-III) were used to evaluate the reactions of this collection. The chickpea genotypes were also characterized using 14 microsatellite markers flanking the genomic regions associated with Ascochyta blight resistance quantitative trait loci (QTLs). Phenotyping results indicated that 27 genotypes were resistant to P-I, 14 to P-II, and five to P-III, revealing the possible erosion of resistance through the evolution of virulent pathogen pathotypes. The genetic diversity analysis revealed 67 alleles at 14 microsatellite loci with an average of 4.8 alleles per locus among the genotypes tested. Genetic similarity estimates differentiated four subclusters (A, B, C, and D) of the genotypes. However, none of sub-clusters were separated into resistant genotypes for a specific pathotype. The genetic diversity ranged from 0.48 to 0.80 which indicated that there is considerable variation in QTL regions associated with Ascochyta blight resistance among the collections of chickpea genotypes studied, as assessed using the hyper-variable microsatellite markers.en_US
dc.publisherFirenze University Pressen_US
dc.sourcePhytopathologia Mediterranea;52,(2013) Pagination 183,191en_US
dc.subjectc. arietinumen_US
dc.titleGenetic diversity of microsatellite alleles located at quantitative resistance loci for Ascochyta blight resistance in a global collection of chickpea germplasmen_US
dc.typeJournal Articleen_US
cg.subject.agrovocascochyta rabieien_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerInternational Maize and Wheat Improvement Center - CIMMYTen_US
cg.contributor.centerNSW Department of Primary Industries - NSW-DPIen_US
cg.contributor.crpCRP 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.statusOpen accessen_US

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