Tag Archives: virulence frequencies

231-236 I. Kokina and I. Rashal
Monitoring the population of Blumeria graminis f. sp. hordei in the South-Eastern part of Latvia
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Monitoring the population of Blumeria graminis f. sp. hordei in the South-Eastern part of Latvia

I. Kokina¹ and I. Rashal²

¹Department of Biology, University of Daugavpils, Vienības Str. 13, LV-5401, Latvia;e-mail: inese.kokina@navigator.lv;
²Institute of Biology, University of Latvia, Miera Str. 3, Salaspils, LV-2169, Latvia;e-mail: izaks@email.lubi.edu.lv

Abstract:

The population of Blumeria graminis f.sp. hordei in the South-Eastern part of Latvia (Latgale region) has been monitored since 1995. In 2005, samples of the pathogen were collected both as conidia and cleistothecia from commercial barley fields. Frequencies of virulence genes, pathotypes and their complexity were calculated. Genes Va1, Va3 and Va13 were presented with medium-high frequencies and frequencies of Va6, Va7, Va9, Va12, Vk and VLa ranged from medium-high to high. A large number of pathotypes was detected, which reflects wide genetic diversity in the pathogen population.

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