1Laboratory of Plant Biotechnologies, Institute of Experimental Botany AS CR, v.v.i., 165 02 Prague 6 – Lysolaje, Czech Republic
2Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany AS CR, v.v.i., 165 02 Prague 6 – Lysolaje, Czech Republic
3Department of Crop Sciences and Agroforestry, Institute of Tropics and Subtropics, Czech University of Life Sciences Prague, 165 21 Prague 6 – Suchdol, Czech Republic
4Department of Molecular Biology, Crop Research Institute, v.v.i., 161 06 Praha 6 – Ruzyně, Czech Republic
5Plant Reproduction Laboratory, Institute of Experimental Botany AS CR, v.v.i., 165 02 Prague 6 – Lysolaje, Czech Republic
6Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, 123 Huntington Street, New Haven, CT 06512, USA