Wilson C M, Alexander D E
Science. 1967 Mar 24;155(3769):1575-6. doi: 10.1126/science.155.3769.1575.
Three strains of maize heterozygous for the opaque-2 mutant gene were self-pollinated to produce ears bearing both normal and opaque kernels. The ribonuclease activity of the opaque-2 endosperm was two to more than four times as high as the activity in the normal endosperm.
对三株携有不透明-2突变基因杂合子的玉米进行自花授粉，以产生同时带有正常籽粒和不透明籽粒的果穗。不透明-2胚乳的核糖核酸酶活性比正常胚乳中的活性高两到四倍以上。
