GrainGenes Reference Report: BIU-231-377
Reference
BIU-231-377
Title
Pathogenicity of barley powdery mildew ( Blumeria graminis f.sp. hordei ) in Poland in 1999
Journal
Biuletyn Instytutu Hodowli i Aklimatyzacji Roslin
Year
2004
Volume
231
Pages
377-386
Author
Czembor HJ Czembor JH
Language
Polish
Abstract
Virulence frequencies of B. graminis [ Erysiphe graminis ] f.sp. hordei in Poland in 1999, were determined using leaf samples of the susceptible cultivar Manchuria infected by powdery mildew collected in 12 locations. From leaf samples collected in each location, 22-45 single-spore isolates were obtained. Virulence of the specific single-spore isolates was determined based on their resistance reaction on 32 differential cultivars. Virulences Vg + CP (91.2%), Va7 + Ab (94.1%), Vh (98%), V(La) (98.7%), V(Ru2) (98.7%), V(Bo) (99.6%), Vra (99.7%) were present in Poland, in 1999, with frequency higher than 90%. Virulences which were present with low frequency (below 50%) were: Va1 + unknown (29.7%), V(St1) + St2 (37.9%), Vat (38.9%), Va9 + k (38.9%), Va3 (39.9%), Va9 (45.6%). Virulences Va23 , Vp , and Vo5 were not present. In 1999, a strong influence of pathogenicity of B. graminis f.sp. hordei population from neighbouring countries was observed on barley plantations in Poland. In 1999, virulences were present, for which their corresponding resistances have never been used in cultivars grown in Poland
Keyword
barley
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GrainGenes Reference Report: BIU-231-377
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||