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GrainGenes Reference Report: TAG-89-831

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Reference	TAG-89-831
Title	A linkage map of diploid Avena based on RFLP loci and a locus conferring resistance to nine isolates of Puccinia coronata var. 'avenae'
Journal	Theoretical and Applied Genetics
Year	1994
Volume	89
Pages	831-837
Author	Rayapati PJ Gregory JW Lee M Wise RP
Type	Article
Abstract	An F2 oat population was produced by crossing the diploid (n=7) species Avena strigosa (CI 3815) with A. wiestii (CI 1994), resistant and susceptible, respectively, to 40 isolates of Puccinia coronata, the causal agent of crown rust. Eighty-eight F2 individuals were used to construct an RFLP linkage map representing the A genome of cultivated hexaploid oat. Two hundred and eight RFLP loci have been placed into 10 linkage groups. This map covers 2416 cM, with an average of 12 cM between RFLP loci. Eighty-eight F3 lines, derived from F2 individuals used to construct the map, were screened for resistance to 9 isolates of P. coronata. One locus, Pca, was found to confer a dominant resistance phenotype to isolates 203, 258, 263, 264B, 290, 298, 325A, and 345. Pca also conferred resistance to isolate 276; however, an unlinked second gene may also be involved.
Allele	Pca (Avena)
Gene	Pca (Avena)
Germplasm	Avena strigosa CIav3815 Avena wiestii CIav1994
Map Data	Diploid Oat, Iowa St.
Probe	p-ZmISU3 [ Show all 164 ]
Keyword	[ Hide all but 1 of 38 ] a genome avena avena nuda avena wiestii chromosome maps conferring resistance crown rust diploidy disease resistance Disease resistance dominance gene gene mapping genetic mapping genetic markers Genetics genome hexaploid hexaploid oat interspecific hybridization linkage linkage groups linkage map loci locus map Monocots oat population puccinia puccinia coronata recombination resistance resistant rflp rust rust diseases segregation
Image	A. strigosa x A. wiestii ABC A. strigosa x A. wiestii DE A. strigosa x A. wiestii FG A. strigosa x A. wiestii LMO

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