1. Julius Kühn-Institut; Federal Research Centre for Cultivated Plants; Institute for Resistance Research and Stress Tolerance; Erwin-Baur-Straße 27 06484 Quedlinburg Germany
2. Julius Kühn-Institut; Federal Research Centre for Cultivated Plants; Institute for Resistance Research and Stress Tolerance; Rudolf-Schick-Platz 3a 18190 Gross Luesewitz Germany