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dc.contributorMaterne, Michaelen_US
dc.contributorHobson, Kristyen_US
dc.contributorvan Ginkel, Maartenen_US
dc.contributorMalhotra, Ren_US
dc.creatorImtiaz, Muhammaden_US
dc.identifier.citationMuhammad Imtiaz, Michael Materne, Kristy Hobson, Maarten van Ginkel, R Malhotra. (10/6/2008). Molecular genetic diversity and linked resistance to ascochyta blight in Australian chickpea breeding materials and their wild relatives. Australian Journal of Agricultural Research, 59 (6), pp. 554-560.en_US
dc.description.abstractSimple sequence-repeat (SSR) and sequence characterised amplified regions (SCARs) have been used to characterise the genetic diversity of chickpea germplasm. A set of 48 genotypes comprising cultigen, landraces, and wild relatives important for breeding purposes was used to determine the genetic similarity between genotypes and to assess the association between ascochyta blight ( AB) and SCAR phenotypes. The 21 SSR markers amplified a total of 370 alleles, with an average of similar to 17 alleles per SSR locus among the 48 genotypes. Polymorphic information content (PIC) values ranged from 0.37 for the XGA13 locus to 0.93 for the XGA106. Principal coordinate analysis (PCO) of genetic similarity (GS) estimates revealed a clear differentiation of the chickpea genotypes into 5 groups, which were generally consistent with available pedigree information. Comparison of SCAR and AB phenotypes enabled us to tag the common source(s) of AB resistance in the breeding collection. Based on the SCAR phenotypes, it was evident that the studied chickpea genotypes, including worldwide-known AB-resistant lines (ICC12004, ILC72, ILC3279), carry at least one common source of resistance to AB. Since SSR markers are polymerase chain reaction (PCR)-based markers, highly polymorphic, and amenable to high-throughput technologies, they are therefore well suited for studies of genetic diversity and cultivar identification in chickpea. The broad level of genetic diversity detected in the chickpea germplasm should be useful for selective breeding for specific traits such as AB, backcrossing, and in enhancing the genetic base of breeding programs.en_US
dc.publisherCSIRO Publishingen_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceAustralian Journal of Agricultural Research;59,(2008) Pagination 554,560en_US
dc.subjectgenetic relationshipen_US
dc.subjectab sourcesen_US
dc.titleMolecular genetic diversity and linked resistance to ascochyta blight in Australian chickpea breeding materials and their wild relativesen_US
dc.typeJournal Articleen_US
cg.subject.agrovocmolecular markersen_US
cg.subject.agrovocascochyta rabieien_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerDepartment of Primary Industries Victoria **en_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.regionAustralia and New Zealanden_US
dc.identifier.statusTimeless limited accessen_US

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