Cotrpea, opa ungUicuIata (L.) Walp., belongs to genus nga in Fabaceae.
There are about l50 species in genus nga. As one of the most pulse crops all
over the world, it is currently cultivated in all tropical, subtropical areas and some
temPefate areas, such as Africa, Asia, South America, the Mediterranean Basin
and the southem states of the USA. WOrid coWPea acreage under cuItivation is
estimated to exceed l2l5 million hectares, with an annual pro...