1. a Department of Plant Cytology and Embryology , Institute of Botany, Jagiellonian University , Cracow 31-044 , Poland
2. b Cytogenetics Group in the Department of Plant Breeding and Seed Science , University of Agriculture in Cracow , Cracow 31-140 , Poland
3. c Laboratory of Molecular Biology and Cytometry, Department of Genetics and Plant Breeding , University of Technology and Life Sciences , Bydgoszcz 85-789 , Poland