Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: BIU-230-119

[Submit comment/correction]

Reference	BIU-230-119
Title	Wheat yellow rust in Poland: virulence frequencies in pathogen population
Journal	Biuletyn Instytutu Hodowli i Aklimatyzacji Roslin
Year	2003
Volume	230
Pages	119-126
Author	Wozniak-Strzembicka A
Language	Polish
Abstract	Yellow rust, caused by Puccinia striiformis f.sp. tritici, is becoming more and more a serious threat to wheat cultivation in Poland. Pathogenicity of the pathogen population was investigated in 1999-2001. Variation in virulence was estimated for 225 isolates of P. striiformis f.sp. tritici collected mainly from the north-western regions of the country. These isolates were tested for virulence on seedlings of the World/European differential set of wheat with the Yr resistance genes. Virulence frequency for the resistance genes Yr1, Yr2, Yr3, Yr4, YrSD, YrCV, Yr2 and Yr6, Yr3a+Yr4a was very high (90-100%). Virulence to the Yr10, YrSu, YrA and Yr6 was generally low. Frequency of virulence for the Yr9 slowly increased from year to year. No virulence was found to resistance genes Yr7, Yr17, YrA, Yr6 and Yr7. Seven pathotypes were identified in the yellow rust population. The differential cultivars were tested also in the field under artificial inoculation with mixture of isolates of the pathogen. In the adult stage, the genes Yr7, Yr17, YrA, Yr6+Yr7, YrA and Yr6 provided full protection against population of P. striiformis f.sp. tritici
Keyword	cultivar [ Show all 12 ]

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.