Resistance of central European oat cultivars (A.sativa L.) to powdery mildew (Blumeria graminis f. sp. aveane)

Abstract

An important aspect of breeding work aimed at increasing resistance to fungal diseases is the constant monitoring of the level of resistance of cultivars and identifying the group of genes used in the fight against diseases. This allows estimating the pressure of pathogens to break down the main resistance genes. The aim of the presented work was to determine the level of resistance and to postulate the presence of resistance genes to powdery mildew in oat cultivars currently growing in central Europe. Studies have shown that these cultivars are characterized by a low level of resistance. We identified only 5 characterized by the above resistance to the B. graminis f.sp. avenae isolates used in the test, in 4 we postulated the presence of the Pm7 gene. In order to protect oat crops more effectively against powdery mildew, it is necessary to introduce cultivars with a wider range of resistance genes or to build gene pyramids.