前言该文对现行的用于玉米杂交种及其亲本品种及纯度鉴定的生化技术，同功酶电泳法，玉米醇溶蛋白等电聚胶电泳法，醇溶蛋白高压液相色谱法，蛋白质聚丙烯酰胺凝胶电泳法，进行了系统比较和客观评价。并介绍了玉米蛋白质聚丙烯酰胺凝胶电泳新系统作为玉米品种鉴定和纯度分析手 Preface In this paper, the current biochemical techniques used for identification of varieties and purity of maize hybrids, isoenzyme electrophoresis, zygotic electrophoresis such as zygosin, prolamin high pressure liquid chromatography, protein poly Acrylamide gel electrophoresis, a systematic comparison and objective evaluation. The new system of corn protein polyacrylamide gel electrophoresis was introduced as the identification and purity analysis of maize varieties