1. Division of Plant Breeding; Section of Genetic Resources and Organic Plant Breeding; Georg-August-Universität; Von-Siebold-Str. 8 Göttingen D - 37075 Germany
2. FiBL Deutschland e.V.; Kasseler Str. 1a Frankfurt D-60486 Germany
3. Research Institute of Organic Agriculture (FiBL); Ackerstrasse 113 Frick CH-5070 Switzerland