栽培稻在分类上属于禾本科(Poaceae)、稻族(Oryzeae)、稻属(Oryza)。稻属包含了两种栽培稻和20多种野生稻物种,广布于全球的热带和亚热带地区(见表)。亚洲栽培稻(O.sativa)就是我们通常食用的水稻,现已广泛地种植于全世界的热带、亚热带以及温带地区。非洲栽培稻(O.glaberrima)种植的面积很小,只在西非的某些农业生态环境中存在,它起源于非洲西部。因为它的产量很低,只有很少人食用它,但它是水稻遗传育种的重要基因资源。 Cultivated rice belongs to the class Poaceae, Oryzeae, Oryza. The genus Orycota contains two cultivated species of rice and more than 20 species of wild rice widely distributed in the tropical and subtropical regions of the world (see table). O.sativa, the rice we normally consume, is now widely grown in tropical, subtropical and temperate regions of the world. O.glaberrima is planted in small areas and exists only in some agro-ecological environments in West Africa. It originated in western Africa. Because of its low yield, only a few people consume it, but it is an important genetic resource for rice genetic breeding.