关键词: 玉米, o2, 赖氨酸, o2修饰基因, 优质蛋白玉米

Abstract: The maize o2 mutation increases the lysine content in the endosperm by decreasing the synthesis of zein storage proteins, which provide gene resourses for high lysine maize breeding. This paper reviewed the discovery, progress of o2 gene and its modifier genes, and summarized the progress of high lysine maize breeding using the interaction of the two genes. It was expected that the paper can provide reference for lysine maize breeding.

Key words: maize, o2, lysine, o2 modifier genes, quality protein maize