栽培稻由野生稻演化而来是稻作学者所公认的,由于野生稻的性状大都偏近籼稻,对籼稻起源于野生稻也没有争议,对粳稻的起源则有不同的看法.丁颖认为粳稻是由籼稻演化而来,周拾禄认为巢湖的粳型野稻是粳稻的先祖.Second根据同工酶研究,推定粳稻是由中国的野生稻演化来的.冈彦一与程侃声先后通过杂交试验,认为野生稻本身同时有直接分化为籼稻和粳稻的可能;王象坤等则进一步推测粳稻是野生稻在旱地上驯化的结果.冈彦一在其《栽培稻之起源》一书中对上述各种假设都有简要的叙述.籼稻和粳稻在地理分布上,虽然从低到高、由南至北,前者渐次减少而后者渐次增多,但这一过渡现象并不能确证粳 Oryza sativa is a type of cultivated rice which has been recognized by paddy scholars since its evolution from wild rice. Since the characters of wild rice are mostly near indica rice, it is not controversial to the origin of wild rice in indica rice and different from the origin of japonica rice. Is from the indica rice evolved, Zhou Shilu that Chaohu japonica wild rice is the ancestor of Japonica.Second according to isozyme studies, it is presumed that japonica rice is evolved from China’s wild rice.Kaoka Yan and Cheng Kan-Sheng has passed the hybridization test , That the wild rice itself has the possibility of direct differentiation into indica and japonica rice; Wang Xiangkun further speculated that japonica rice is the result of wild rice in the dry domestication of Okayama in its “origin of cultivated rice,” a book of the above Assumptions have a brief description of indica rice and japonica rice in the geographical distribution, although from low to high, from south to north, the former gradually decreased and the latter gradually increased, but the transition phenomenon can not be confirmed japonica