1. Department of Biology, Faculty of Nature Sciences, Vytautas Magnus University, Universiteto g. 10, LT-53661 Akademija, Kaunas distr., Lithuania
2. Department of Biology, Faculty of Nature Sciences, Vytautas Magnus University, Universiteto g. 10, LT-53661 Akademija, Kaunas distr., Lithuania; Department of Mathematical Statistics, Vilnius Gediminas Technical University, Vilnius, Lithuania
3. Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, Kauno g. 30, LT-54333 Babtai, Kaunas distr., Lithuania
4. Institute of Biosciences, Life Sciences Center, Vilnius University, Saulėtekio al. 7, LT-10257 Vilnius, Lithuania