农药学学报2016，Vol.18Issue(4)：439-446,8.DOI:10.16801/j.issn.1008-7303.2016.0061
脱叶剂对棉花抗氧化酶及内源激素的影响
Effect of defoliants on antioxidative enzyme activity and endogenous hormone contents of cotton
摘要
Abstract
In order to select the suitable leaf removal agent for the time and the effect of leaf removal, the effects of different time of leaf and leaf removal agent on endogenous hormone content, antioxidant enzyme activity and malondialdehyde (MDA) content in cotton leaves under field conditions were studied, and the effects of the leaf removing agents on the physiological effects of cotton were addressed as well. Using the split plot experiment design, the main area of the time of the leaf removal agent was sprayed, and the types of the leaf removal agent were tested. The result showed that after spaying the treatment of 540 g/L dropp ultra (mainly components 18% thidiazuron and 36% diuron) and 5.5% thidiazuron suspending agent, the content of abscisic acid (ABA) and superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) activity in cotton leaves increased at first and then decreased, the content of MDA increased and indole-3-acetic acid (IAA) content decreased, in which the dropp ultra on membrane system severely damaged. Spaying the treatment of 540 g/L dropp ultra when the cotton boll opening rate reaches 50%, cotton defoliation rate and boll opening rate can reach 90.1% and 99.9% respectively after 25 days.关键词
脱叶剂/棉花/抗氧化酶/内源激素/丙二醛Key words
defoliants/cotton/antioxidative enzymes/hormone/malondialdehyde分类
农业科技引用本文复制引用
高丽丽,李淦,康正华,李健伟,王蜜蜂,马云珍,张巨松..脱叶剂对棉花抗氧化酶及内源激素的影响[J].农药学学报,2016,18(4):439-446,8.基金项目
“十二五”国家科技支撑计划课题(2014BAD09B04)；新疆农业大学产学研项目(xjaucxy-yis-20131046) （2014BAD09B04）
