二氯苯醚菊酯对黄瓜叶片几种氧化酶活性的影响

摘要

研究结果表明,二氯苯醚菊酯（PER）对黄瓜几种氧化酶活性有不同程度的影响，其影响的程度与PER的浓度有关.20～400mg.L-1的PER分别使黄瓜体内的过氧化氢酶和乙醇酸氧化酶活性升高3.35%～32.71%和4.42%～34.51%.20～200mg.L-1的PER使过氧化物酶活性升高9.70%～29.10%；50～250mg.L-1的PER使吲哚乙酸氧化酶活性升高13.58%～32.10%；50～300mg.L-1的PER使抗坏血酸氧化酶活性下降3.18%～20.69%.用200mg.L-1的PER处理黄瓜幼苗1～6d后,体内过氧化物酶活性升高10.37%～43.17%.%The results of this investigation indicated that permethrin (PER)in 20～400 mg.L-1 increased the activities of catalase and glycolate oxidase in cucumber leaves by 3.35%～32.71% and 4.42%～34.51%, respectively. PER in 20～200 mg.L-1 increased the activity of peroxidase by 9.70%～29.10%. PER in 50～250 mg.L-1 increased the activity of indoleacetic acid oxidase by 13.58%～32.10%. The activity of ascorbate oxidase was decreased by 3.18%～20.69% by PER in the concentrations of 50～300 mg.L-1. After the cucumber seedlings were treated with 200 mg.L-1 PER for 1～6 days, the activity of peroxidase increased by 10.37%～43.17%.