Leptosphaeria species causing blackleg disease in oilseed rape and L. maculans race incidence in the Czech Republic

Abstract: Provided survey aims to contribute to effective utilisation of current oilseed rape cultivars in the Czech Republic with respect to incidence of Leptosphaeria maculans avirulence alleles to prevent selection of new virulent races from L. maculans populations. Presented are the first results of an ongoing project focused on the monitoring incidence of L. biglobosa and L. maculans species and AvrLm alleles in L. maculans isolates collected in the Czech Republic during 2017-2021.