1. Independent Researcher, 73529 Schwäbisch Gmünd, Germany
2. Independent Researcher, Voc. Podere Sansano 5, 06062 Citta’ della Pieve (PG), Italy
3. World Vegetable Center, 60 Yi-Min Liao, Shanhua, Tainan 74151, Taiwan
4. Centre for Genetic Resources, the Netherlands (CGN), Wageningen University & Research, 6700 AA Wageningen, The Netherlands
5. Executive Secretary of the Zambia Seed Trade Association (ZASTA), Sulmach Buldings, Tiyende Pamodzi, Off Nangweya, Lusaka, Zambia