森林与环境学报2016，Vol.36Issue(2)：180-187,8.DOI:10.13324/j.cnki.jfcf.2016.02.009
4种芒属观赏草对干旱胁迫的生理响应
Physiological response of 4 species of Miscanthus ornamental grass to drought stress
摘要
Abstract
To investigate the drought resistance of 4 species of Miscanthus ornamental grass, polyethylene glycol ( PEG) was used to simulate different levels of drought stress ( 10%, 20%, 30%) and make clear the effects of drought stress on the physiological and biochemical indices of 4 species of annual Miscanthus ornamental grass. 9 physiological and biochemical indices such as membrane permeability, chlorophyll a, chlorophyll b, soluble sugar, MDA, SOD, CAT, POD, AsA-POD were measured to assess the drought resistance of 4 species of Miscanthus ornamental grass. With the increase of drought stress, the relative electric conductivities, soluble sugar concentration and MDA increased significantly while AsA-POD, chlorophyll a and chlorophyll b decreased significantly. Activities of SOD, CAT and POD increased and then decreased. According to variance analysis there was significant difference in the indices between the treated groups and the control(P<0.05) at the highest stress concentration. The drought resistance of 4 ornamental grass species of Miscanthus was evaluated preliminarily with subordinate function analysis and the finally order of the drought resistance was as follows:M. sinensis‘Zebrinus’ >M. sinensis‘Gracilimus’ >M. sinensis‘Variegatus’> M. sinensis Anderss..关键词
聚乙二醇6000/干旱胁迫/生理生化指标/综合评价Key words
polyethylene glycol 6000/drought stress/physiological and biochemical indices/comprehensive assessment分类
农业科技引用本文复制引用
马芳蕾,陈莹,聂晶晶,林思祖..4种芒属观赏草对干旱胁迫的生理响应[J].森林与环境学报,2016,36(2):180-187,8.基金项目
福建省教育厅科技项目( JB13052)。 （ JB13052）
