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Virulence analysis of wheat powdery mildew population (Erysiphe graminis f.sp.tritici) from the region of Slovakia and Hungary

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Abstract

In the year 1992 a total of 163 isolates of wheat powdery mildew were tested. The samples of mildew isolates were obtained by means of a mobile spore catching apparatus. The populations from 4 regions of Slovakia and 3 regions of Hungary were analyzed. The resistance due toPm5, Pm8 andMl-i genes at the observed locations has already been overcome. The resistance genesPm1, Pm2 and a gene combinationPm2+Pm6 ensure the protection only against a part of the patho-types of powdery mildew population. Virulence corresponding to thePm4b gene has been low so far. The regional patterns of pathogen virulence are in good agreement with the gene resistance spectrum by the cultivars grown regionally. Little differences in virulence among the populations from the regions of Slovakia and Hungary indicate that this part of Eastern Europe should be considered as an epidemiologic unit.

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  1. Department of Genetics, Comenius University, 842 15, Bratislava, Slovakia

    M. Švec, M. Miklovičová & M. Sýkora

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  1. M. Švec
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  2. M. Miklovičová
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  3. M. Sýkora
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Švec, M., Miklovičová, M. & Sýkora, M. Virulence analysis of wheat powdery mildew population (Erysiphe graminis f.sp.tritici) from the region of Slovakia and Hungary. Folia Microbiol 38, 497–500 (1993). https://doi.org/10.1007/BF02814402

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  • DOI: https://doi.org/10.1007/BF02814402

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