种子混杂时有发生,它给生产和科学试验带来困难,甚至会造成重大损失。如玉米自交系156A-4和单交种CX-504,其生长势和生产能力有明显差异,但籽粒外型则不易辨认。我们采用聚丙烯酰胺凝胶电泳分离同工酶谱的方法,不需等候观察自交系种和单交种的田间生长表现,而在种子萌发时期就可以将它 Occurrence of mixed seeds at times can cause difficulties in production and scientific experimentation and can even result in significant losses. Such as maize inbred line 156A-4 and single cross-species CX-504, the growth potential and production capacity were significantly different, but the grain appearance is not easy to identify. We use polyacrylamide gel electrophoresis separation isozyme method, without waiting for observation of inbred lines and single cross-species growth performance in the field, but in the seed germination period can be it