GrainGenes Reference Report: PHY-99-968
Reference
PHY-99-968
Title
Characterization of genetic components involved in durable resistance to stripe rust in the bread wheat 'Renan'.
Journal
Phytopathology
Year
2009
Volume
99
Pages
968-973
Author
Dedryver F
[ Show all 8 ]
Abstract
ABSTRACT Stripe rust, caused by Puccinia striiformis f. tritici, is one of the most widespread and destructive wheat diseases in areas where cool temperatures prevail. The wheat cv. Renan, carrying the specific gene Yr17, has shown effective resistance for a long time, even though some pathotypes overcame the Yr17 gene. The objectives of this study were to locate and map genetic loci associated with adult-plant resistance (APR) to stripe rust in a recombinant inbred line population derived from a cross between Renan (resistant) and Rcital (susceptible). Field assays were performed for 4 years (1995, 1996, 2005, and 2006) to score disease-progress data and identify APR quantitative trait loci (QTLs). Three QTLs, QYr.inra-2BS, QYr.inra-3BS, and QYr.inra-6B, with resistance alleles derived from Renan were detected in 1995 to 1996 with the 237E141 pathotype, which is avirulent against genotypes carrying Yr17. These QTLs were stable and explained a major part of the phenotypic variation seen in 2005 to 2006, when the 237E141 V17 pathotype was used. Each of these QTLs contributed approximately 4 to 15% of the phenotypic variance and was effective at different adult plant stages. Interactions were observed between some markers of the Yr17 gene and three Renan QTLs: QYr.inra-2BS, QYr.inra-3BS, and QYr.inra-6B. Resistance based on the combination of different APR types should provide durable resistance to P. striiformis.
External Databases
http://dx.doi.org/10.1094/PHYTO-99-8-0968
QTL
[ Hide all but 1 of 7 ] QYr.inra_2AS.1_Recital QYr.inra-2BS_Renan QYr.inra-3BS_Renan QYr.inra-3Bcentr_Renan QYr.inra-6B_Renan QYr.inra-7A_Recital qNV.Yr-2A.6
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: PHY-99-968
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||