The variability of Erysiphe graminis sp. tritici in West Slovakia in 1989-1990
1992
Huszar, J. (Vyskumny Ustav Rastlinnej Vyroby, Piestany (CSFR))
In 1989-1990, nine races of Erysiphe graminis f.sp. tritici out of 33 isolates from the West Slovakia region were identified by the Frauenstein et al. The most frequent race 5421 was at the same time the least virulent one. Against the most virulent race 7731, the resistance factors of Kenya Civet variety, Pm2+Pm6 were only effective. Mld+mlha, Pm4b and Pm2+Pm6 appeared to be the most effective resistance factors. Pm5, Pm7 and Pm8 resistance factors were attacked by all races. In race 5421 coming from various provenances we found out the differences in aggressiveness mainly to Mld+mlha factors of Halle 13471 variety and to Pm2 of Ulka variety.
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