对玉米毛82-2交系的16个姊妹系或姊妹种分别运用垂直板聚丙烯酸胶凝胶电泳方法分析过氧化物酶、酯酶同功酶，运用等电聚焦电泳方法分析过氧化物酶同工酶。结果表明：在姊妹系间、姊妹种间、姊妹系与其对应姊妹种间，酯酶同工酸酶谱差异甚微，而过氧化物酶同功酶酶话有明显差异．对过氧化物酶同工酸酶谱，用等电聚焦电泳所得酶带比用垂直板聚丙烯酸肢凝胶电泳所得酶带丰富，故显示出的差异更明显。 Peroxidase and esterase isoenzymes were analyzed by vertical plate polyacrylamide gel electrophoresis on 16 sister or sister strains of maize 82-2 cross, respectively. Peroxidase Isoenzyme. The results showed that there was no significant difference in esterase isozymes between sisters lines, sister sisters, sister lines and their corresponding sister siblings, but there was a significant difference in peroxidase isozymes. The peroxidase isoenzyme profile, using isoelectric focusing electrophoresis of the band than the vertical plate polyacrylate gel electrophoresis of the resulting enzyme-rich bands, it shows the more obvious differences.