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GrainGenes Reference Report: TAG-107-26

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Reference	TAG-107-26
Title	A genetic linkage map for hexaploid, cultivated oat (Avena sativa L.) based on an intraspecific cross 'Ogle/MAM17-5'
Journal	Theoretical and Applied Genetics
Year	2003
Volume	107
Pages	26-35
Author	Zhu S Kaeppler HF
Abstract	Summary: Genetic research and breeding of oat (Avena sativa L.) would be aided by development of a genetic linkage map for a breeding population. Such a map could be used for localization of qualitative and quantitative trait loci, marker-assisted selection and other genetic analysis in an adapted, agronomically useful background. The objectives of this research were to develop a genetic linkage map of hexaploid cultivated oat, to identify homoeologous relationships of linkage groups, and to compare homologous linkage groups between this map and the previously published hexaploid oat map from the cross 'Kanota/Ogle' (KO). A total of 510 markers, including 172 restriction fragment length polymorphisms (RFLP), 324 amplified fragment length polymorphisms (AFLP) and 14 simple sequence repeats (SSR), were assessed on a recombinant inbred population of 152 F(5:6) lines derived from the cross, 'Ogle/MAM17-5' (OM). Twenty eight linkage groups of 5 cM or longer were formed using 476 of the markers, while 34 markers remained either unlinked or in small fragments less than 5 cM. The 28 linkage groups contained from 3 to 33 markers, and varied in size from 5.2 to 123.0 cM, representing a total map length of 1,396.7 cM. Three putative homoeologous groups (OM7, OM8 and OM18; OM2 and OM23; OM13 and OM16) were identified. Comparison with the published KO map indicated that nine OM linkage groups could be determined to be homologous to linkage groups in the KO map. Further comparison of the homologous linkage groups revealed that residual differences in genomic rearrangements existed between the two hexaploid oat populations. Some linkage groups were significantly extended compared with the KO map. Since the OM mapping population is segregating for a number of agronomically important traits, this genetic map will provide a useful tool for identification of qualitative and quantitative loci for these traits
External Databases	Pubmed: 12721634
Map Data	Oat-2003-OglexMAM17-5
Keyword	[ Hide all but 1 of 49 ] aflp amplified fragment length polymorphism avena avena sativa avena sativa-l barley breeding c genome conferring resistance crown rust resistance cultivated oat difference diploid avena fragments genetic analysis genetic linkage map genetic map genomic hexaploid hexaploid oat homoeologous relationships homology linkage linkage groups linkage map localization locus map mapping molecular marker oat objectives puccinia coronata quantitative quantitative trait loci rearrangements recombinant inbred recombinant inbred population restriction restriction fragment length restriction fragment length polymorphisms rflp segregation distortion selection sequence ssr tool trait trait loci

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