摘要： 利用改进的聚丙烯酰胺凝胶电泳技术对改良掖单19（8001×52106）、原掖单19（478×52106）及亲本8001、478、52106种子清蛋白（Albumin）进行了研究。改良掖单19共分离出18条清蛋白谱带，除了7条是双亲都有的公共带外，其余11条是分别来自于双亲的互补带，其中4条来自8001，7条来自52106，没有新生带的产生，在A区和B区表现双亲共显性，在C区表现偏父类型；原掖单19共分离出16条清蛋白谱带，比改良掖单19少两条，在谱带分布上也存在明显差别。改良掖单19与原掖单19的清蛋白谱带彼此不能相互替代。

关键词: 玉米, 姊妹系, 姊妹交种, 改良单交种, 原单交种, 清蛋白, 改进的聚丙烯酰胺凝胶电泳

Abstract: The research has been made on seed's albumin of modified Yiedan 19(8001×52106), Yiedan19(478×52106)and their parents 8001, 478, 52106 by improved polyacrylamide gel electrophoresis(PAGE). The results were as follows: 18 pieces of bands were in both of its parents, the rest were complementary type of the different bands of parents no other new bands presented. The bands were codominacance of parents in A. B zones, but expressed patroclial form in C zone.16 pieces of bands were derieved from Yiedan 19. There were significant differences not only in the number of bands but also in band distribution. Therefore, the bands of modified Yiedan 19 and Yiedan 19 can not be replaced.

Key words: Maize, Sister line, Sister-cross, Modified single cross, Original single cross, Albumin, Improved PAGE