ESTIMATION OF THE SCAB RESISTANCE OF APPLE CLONAL ROOTSTOCKS USING MOLECULAR MARKERS
The most common apple disease is scab. It causes significant damage both in apple orchards and in nurseries and stoolbeds. The presented work is devoted to the estimation of the resistance of apple clonal rootstocks to scab using the molecular marker. The scab resistance gene Rvi6 was identified using the most common VfC marker. 32 forms of clonal rootstocks from the collection of Michurinsk State Agrarian University were analyzed. It was found that among the studied forms, no genotypes with the Rvi6 gene were identified. Genotypes with an unique additional 400 bp fragment (which is possibly another locus of the Rvi gene) were identified.