1. Institute of Experimental Botany; Academy of Sciences of the Czech Republic; 16502; Prague 6; Czech Republic
2. Department of Plant Physiology; Faculty of Science; Charles University; 12844; Prague 2; Czech Republic
3. Center for Genome Research and Biocomputing; Department of Botany and Plant Pathology; Oregon State University; Corvallis; OR; 97331; USA
4. Department of Horticulture & Landscape Architecture; Purdue University; West Lafayette; IN; 47907; USA