A. Przetakiewicz1*, D. Milczarek2, E. Zimnoch-Guzowska2and B. Flis2
1Plant Breeding and Acclimatization Institute–National Research Institute, Department of Plant Pathology, Radzików, 05-870 Błonie, Poland;
2Plant Breeding and Acclimatization Institute – National Research Institute, Research Centre Młochów, Platanowa 19, 05-831 Młochów, Poland