Abstract
Grapes are an important fruit crop in Kazakhstan. Downy mildew is one of the most common fungal diseases of grapes caused by Plasmopara viticola. An effective way to control the spread of the pathogen is the cultivation of resistant varieties. Vitis Vinifera varieties are considered the basis of high-quality viticulture, but are susceptible to P. viticola. The search for sustainability donors is an important stage of breeding. In this work, we conducted PCR studies on selected grape varieties and hybrids of Kazakhstani selection using 5 DNA markers (GF18-08, GF18-06, GF09-46, GF09-48, GF14-28) linked to downy mildew resistance genes at the Rpv10, Rpv12 and Rpv3 loci. The separation of reaction products was carried out by the method of capillary electrophoresis using the 3500 (Applied Biosystems) automatic genetic analyzer. The analyzes were carried out according to the possibility of identifying target alleles according to the breed of the samples under study. The Rpv3 gene for powdery mildew resistance was detected in six hybrid genotypes and four varieties. At the Rpv10 locus, it was detected in two markers (GF09-46, GF09-48) in the Almaly, Bereke, and Fioletovy ranny varieties and in three grape hybrids. No Rpv12 resistance genes were found.
01 Introduction
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02 References
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