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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
a genome
[ Show all 38 ]
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