1. Instituto Nacional Autónomo de Investigaciones Agropecuárias (INIAP) Estación Experimental Santa Catalina, Panamericana Sur km 1 Quito Ecuador
2. Wageningen UR Plant Breeding Wageningen University and Research Center PO Box 16, 6700 AA Wageningen the Netherlands
3. Plant Research International Biointeractions and Plant Health PO Box 16, 6700 AA Wageningen the Netherlands