新疆农业科学2011，Vol.48Issue(1)：11-17,7.
PEG6000模拟干旱胁迫对大麦幼苗丙二醛含量及保护酶活性的影响
Effect of Drought Stress Simulated by PEG6000 on Malondialdehyde Content and Activities of Protective Enzymes in Barley Seedlings
摘要
Abstract
[Objectlve] The aim of this paper was to study the effect of drought stress on malondialdehyde content and activities of protective enzymes in barley seedlings. [ Method] Malondialdehyde contents and the activities of superoxide dismutase, peroxidase, and catalase in shoot and root of 4 barley varieties under drought stress simulated by PFGC6000 were determined. [Result]The malondialdehyde contents in shoot and root of 4 tested varieties increased with the prolongation of drought stress time . The superoxide dismutase and peroxidase activities in shoot rose up firstly and then declined with the prolongation of drought stress time. There were differences between root and shoot protective enzyme activities . The 4 varieties also differed in the activities of superoxide dismutase, peroxidase and catalase. The activities of superoxide dismutase and peroxidase in drought - resistant varieties ( Tevcel and Aiganzao) increased more quickly than that in drought - sensitive varieties ( Guangmai 7 and Cmebc) . The activities of three enzymes decreased with the prolongation of drought stress time. Moreover, the activities of the three enzymes of the drought - sensitive varieties ( Guangmai 7 and Cmebc) decreased sharply. [Conclusion] Under drought stress, the activities of superoxide dismutase, peroxidase and catalase and malondialdehyde content can be used as the screening indicator in barley drought resistance .关键词
大麦/干早胁迫/丙二醛/超氧化物歧化酶/过氧化物酶/过氧化氢酶分类
农业科技引用本文复制引用
聂石辉,齐军仓,张海禄,李静,马贵,高琛,韦鹏飞,张合理,李璐..PEG6000模拟干旱胁迫对大麦幼苗丙二醛含量及保护酶活性的影响[J].新疆农业科学,2011,48(1):11-17,7.基金项目
中澳合作GRDC项目 （）
农业部现代农业产业技术体系建设专项资金 （）
国家自然科学基金项目(30760112) （30760112）
