Reaction Of Zymoseptoria Tritici Isolates Collected In The Czech Republic During The Year 2017 To Azoxystrobin

The most frequent technique used among the wheat (Triticum aestivum) growers, in order to fight with fungal pathogens, is treating plants with fungicides. Unfortunately, due to the developed resistance of those pathogens to some active ingredients of fungicides, this method is not always effective. The aim of this study was to detect the resistance of Zymoseptoria tritici isolates collected in the Czech Republic during the year 2017 to strobilurin, by laboratory agar dilution biotest and molecular methods as a CAPS marker and qPCR. Resistance to strobilurin fungicides was found in 54% of total 66 analysed isolates. The presence of G143A mutation in the resistant isolates was confirmed.