1. Department of Materials Science, Welding and Strength of Materials , Wrocław University of Science and Technology , Wrocław , Poland
2. Department of Mechanics, Materials and Biomedical Engineering , Wrocław University of Science and Technology , Wrocław , Poland
3. Department of Genetics, Plant Breeding and Seed Production , Wrocław University of Environmental and Life Sciences , Wrocław , Poland
4. Research Centre for Cultivar Testing , Słupia Wielka , Poland