1. National Research Council (CNR); Institute of Agro-Environmental and Forest Biology; Legnaro PD Italy
2. Applied Plant Research; Wageningen University; Lelystad The Netherlands
3. Julius Kühn-Institut; Federal Research Centre for Cultivated Plants; Braunschweig Germany
4. Faculty of Agricultural and Food Sciences and Environmental Management; University of Debrecen; Debrecen Hungary
5. Plant Protection Institute; Centre for Agricultural Research; Hungarian Academy of Sciences; Budapest Hungary
6. Agricultural Institute of Slovenia; Ljubljana Slovenia
7. Veneto Agricoltura; Legnaro PD Italy