batatas, D. contrary, and you can D. polystachya). So it species try indigenous to China and has come forcibly expanded for over a thousand decades (Peng mais aussi al., 2017). It’s aren’t included in valleys as well as on brand new sunny-side out of hills around the China, especially in southern nations. The new bush is actually a recurrent, smaller than this new African yams however, able to growing over 3 meters extreme and 1.5 meters greater. Although not, their tolerance so you can lower heat have enabled its cultivation when you look at the much cold environments such as for example northern China, Korea, and you will Japan. Certainly one of nations within Asia, the fresh new much time domestication and you can cultivation reputation of D. polystachya features resulted in various regional cultivars, and Ma Yam, Ruichang Yam, and you can Legs Potato (Gao and you will Zhao, 2007). Читать далее →