ROOTS AND TUBERS – YAM (Dioscorea)
Description of Yam
Yam is believed to have originated in India and it is popularly cultivated in Southern and middle belt of Nigeria. Yam has stems which are usually twining. They have vines and some have thorns.
Varieties of Yam
These are;
White yam: Dioscorea rotundata
Yellow yam: Dioscorea cayenensis
Water yam: Dioscorea alata
Trifoliate yam: Dioscorea domentorum
Aerial yam: Dioscorea bulbefera
Chinese yam: Dioscorea esculenta
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