摘要： 本文研究了不同抗枯萎病类型棉花品种及同一品种（系）内感病植株和健康植株叶片超氧物歧化酶和过氧化物酶活性的差异。结果表明，在田间发病情况下，抗病品种膜脂过氧化水平低，超氧物歧化酶和过氧化物酶活性弱，可溶性蛋白质含量高，不抗病品种则表现相反；在同一品种（系）内，感病植株比健康植株膜脂过氧化水平，超氧物歧化酶和过氧化物酶活性均较高，可溶性蛋白质含量较低，差异达极显著水平。

关键词: 棉花, 枯萎病, 超氧物歧化酶, 过氧化物酶

Abstract: The activities of superoxide dismutase and peroxidase in leaves of cotton with different resistance to Fusarium wilt and the difference of the two enzymes activities between infected plants and intact plants in the same cultivar (line) were studies. The results indicated that the disease-resistant cultivars (lines) , under the field condition , displayed low membrane lipid peroxidation, weak SOD and POD activities and high soluble protein content;on the co in the same disease-sensitive cultivar,the membrane lipid peroxidation and the enzymes actvities of infected plants oppcarcd significantly higher than that of intact plants, but the solable protein content of infected plants was significantly lower than that of intact.

Key words: Cotton (Gossypium hirsutum), Fusarium wilt, Superoxidc dismutase, Peroxidase