1. DIADE, Univ Montpellier, IRD, Montpellier, France.
2. National Root Crops Research Institute, Umudike, PMB 7006, Umuahia, Abia State, Nigeria.
3. University of Parakou, BP 123 Parakou, Bénin.
4. CSIR-Crops Research Institute, P.O. Box 3785, Fumesua-Kumasi, Ghana.
5. University of Yaoundé I, Laboratory of Plant Systematics and Ecology, P.O. Box 047, Yaoundé, Cameroon.
6. National University of Sciences, Technologies, Engineering and Mathematics of Abomey, Laboratory BIORAVE, Dassa-Zoumè, Benin.
7. Cirad UMR AGAP, F-34398 Montpellier, France.
8. University Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France.
9. GQE–Le Moulon, INRA, Univ Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91190 Gif-sur-Yvette, France.
10. University Grenoble-Alpes, Grenoble INP, TIMC-IMAG CNRS UMR 5525, 38042 Grenoble Cedex, France.