1963年麦茨发现了一个隐性突变基因,叫做“奥帕克—2”(Op2que—2),缩写为O_2。利用O_2基因型材料所选育成的玉米品种或杂交种,统称为高赖氨酸玉米。该玉米籽粒中赖氨酸、色氨酸含量比普通玉米高一倍,按营养成份来计算,可与牛奶相媲美,接近鸡蛋蛋白质水平。从营养价值看,种一亩高赖氨酸玉米杂交种,赖氨酸的产量相当于优良普 Metz discovered a recessive mutant gene in 1963, called Op2que-2, abbreviated O_2. Maize varieties or hybrids bred by using O 2 genotype materials are collectively referred to as high-lysine corn. The corn grain lysine, tryptophan content than ordinary corn doubled, calculated according to nutrients, comparable with milk, close to the egg protein level. From the nutritional value of view, planting one acre of high lysine corn hybrids, the yield of lysine is equivalent to excellent