1. Cassava Program CGIAR Research Program on Roots Tubers and Bananas (RTB) International Center for Tropical Agriculture (CIAT) Palmira Valle del Cauca Colombia
2. Faculty of Agricultural Sciences National University of Colombia Palmira Valle del Cauca Colombia
3. UMR Qualisud Univ. Montpellier, CIRAD Montpellier, SupAgro, Univ. Avignon, Univ. La Réunion Montpellier France