1. Department of Ecology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 080 01 Prešov, Slovakia
2. Department of Biotechnology and Bioscience, University of Milano-Bicocca, 20126 Milan, Italy
3. Research and Breeding Station Malý Šariš, Research Institute of Plant Production Piešťany, National Agricultural and Food Centre Nitra, Malý Šariš 221, 080 01 Prešov, Slovakia
4. Department of Biology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 080 01 Prešov, Slovakia