1. Department of Biophysics, Faculty of Science, Palacký University , Šlechtitelů 27, CZ-783 71, Olomouc , Czech Republic
2. Czech Advanced Technology and Research Institute, Palacký University , Šlechtitelů 27, CZ-783 71, Olomouc , Czech Republic
3. Center of the Region Haná for Biotechnological and Agricultural Research, Department of Genetic Resources for Vegetables, Medicinal and Special Plants, Crop Research Institute , Šlechtitelů 29, CZ-783 71 Olomouc , Czech Republic
4. Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany of the Czech Academy of Sciences , Šlechtitelů 27, CZ-783 71, Olomouc , Czech Republic