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The aim of the study was to define the importance of breeding cultivars resistant to pathogenic organisms and the assessment of its availability in IPM (Integrated Pest Management) of OSR (oilseed rape). The cultivation of OSR resistant or tolerant varieties in addition to agrotechnics, the use of natural elements of the ecosystem and the rational application of PPP and other agrochemicals, is one of the basic elements of the IPM. The System of Post-Registration Variety Testing (PDO) implemented in Poland allows for constant monitoring of the most important threats as well as genetic resistance of varieties under field conditions, in a diverse agro-climatic environment. The precise selection of the variety is an important element of IPM of OSR. The progress in breeding resistance to both biotic and abiotic factors is brought primarily by hybrid varieties. In recent years, this mainly applies to such economically important pathogenic organisms as: Leptosphaeria spp. (blackleg), Turnip yellow virus (TuYV) and Plasmodiophora brassicae (clubroot).

The importance and availability of resistant varieties in the integrated protection of oilseed rape against pathogens