Back to  Varietal diversity and conservation of cultivated yam (Dioscorea cayenensis, Dioscorea rotundata and Dioscorea alata) in Kara region (Togo)  Varietal diversity and conservation of cultivated yam (Dioscorea cayenensis, Dioscorea rotundata and Dioscorea alata) in Kara region (Togo)