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玉米在植物分类学上属于禾本科(Graminea)、玉米族(Tripasacea)、玉米属(Zea)、玉米种(mays)。多年来,在玉米的起源问题上,有若干说法。如蒙哥马利提出的共同祖先学说(即玉米、大刍草、摩擦禾来自共同的祖先,以后在不同的条件下发育成不同种族);圣希莱尔的有稃种学说;阿谢森的大刍草学说及曼格斯多夫的三重学说。自1806年以来,这些学说一直在争论中,特别是大刍草学说维持的时间较长,有同样看法的人也较多一些。主要原因是大刍草有许多性状与玉米相似,又容易杂交。但在玉米进化过程中,却缺乏这一学说的事实根据。
Maize is phytologically classified as Graminea, Tripasacea, Zea, mays. Over the years, there have been several statements on the origin of corn. Such as Montgomery proposed common ancestral doctrine (ie, corn, herbaceous grass, rubbing Wo from a common ancestor, later developed into different races under different conditions); Saint Hilaire’s theory; Grass-based theory and Mansdorf’s triple theory. Since 1806, these theories have been debated. In particular, the doctrine has been maintained for a long time and there are many people who share the same view. The main reason is that there are many traits of herbaceous grass similar to corn, but also easy to cross. However, in the process of corn evolution, it lacks the factual basis of this theory.