1. Laboratoire Des RadioIsotopes, Université d’Antananarivo, BP 3383, Route d’Andraisoro, 101, Antananarivo, Madagascar
2. Faculty of Agriculture and Marine Science, Kochi University, 783-8502, Nankoku, Japan
3. Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, 305-8686, Tsukuba, Japan