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GrainGenes Reference Report: TAG-108-567

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Reference	TAG-108-567
Title	Yr32 for resistance to stripe (yellow) rust present in the wheat cultivar Carstens V
Journal	Theoretical and Applied Genetics
Year	2004
Volume	108
Pages	567-575
Author	Eriksen L [ Show all 6 ]
Abstract	Summary: Stripe or yellow rust of wheat, caused by Puccinia striiformis f. sp. tritici, is an important disease in many wheat-growing regions of the world. A number of major genes providing resistance to stripe rust have been used in breeding, including one gene that is present in the differential tester Carstens V. The objective of this study was to locate and map a stripe rust resistance gene transferred from Carstens V to Avocet S and to use molecular tools to locate a number of genes segregating in the cross Savannah/Senat. One of the genes present in Senat was predicted to be a gene that is present in Carstens V. For this latter purpose, stripe rust response data from both seedling and field tests on a doubled haploid population consisting of 77 lines were compared to an available molecular map for the same lines using a non-parametric quantitative trait loci (QTL) analysis. Results obtained in Denmark suggested that a strong component of resistance with the specificity of Carstens V was located in chromosome arm 2AL, and this was consistent with chromosome location work undertaken in Australia. Since this gene segregated independently of Yr1, the only other stripe rust resistance gene known to be located in this chromosome arm, it was designated Yr32. Further QTLs originating from Senat were located in chromosomes 1BL, 4D, and 7DS and from Savannah on 5B, but it was not possible to characterize them as unique resistance genes in any definitive way. Yr32 was detected in several wheats, including the North American differential tester Tres
External Databases	Pubmed: 14523516
Gene	Yr32 (Triticum) Yr25 (Triticum)
Locus	Yr32
QTL	Yr32
Keyword	[ Hide all but 1 of 37 ] australia bread wheat breeding chromosome chromosome location cultivar disease doubled haploid f-sp tritici field gene genetic-linkage haploid inheritance locus major genes map marker molecular map pm4 population puccinia striiformis quantitative trait loci races resistance rust rust resistance rust resistance gene specificity striiformis f.sp tritici stripe rust tester tools trait loci tritici unique yellow rust

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