华北农学报2016，Vol.31Issue(4)：138-145,8.DOI:10.7668/hbnxb.2016.04.023
外源水杨酸对低温胁迫下养心菜生理代谢的调节作用
Regulating of Exogenous Salicylic Acid on Physiological Metabolism of Sedum aizoon L.under Low Temperature Stress
摘要
Abstract
In order to analyze the regulating effect of 0,5 ℃ low temperature treatment on the Sedum aizoon L. with salicylic acid of different concentrations (0,0.5,1.0,2.0,4.0 mmol /L)on membrane permeability,MDA con-tent,antioxidant enzyme activity,soluble protein,proline,chlorophyll content and chlorophyll fluorescence parameter to investigate the effects of its pretreatment on leaf physiological metabolism.The results showed that 0.5,1.0,2.0 mmol /L concentration of salicylic acid processing,salicylic acid treatment could inhibit raising relative conductivity and MDA increasing,improving SOD,POD activity in the leave of Sedum aizoon L.;Increasing soluble protein,pro-line,chlorophyll content,could also slow down the Fv /Fm decline under low temperature stress,slowed photo inhibi-tion damage to plants,Sedum aizoon L.at low temperatures cold indicators had varying degrees of ease.Evaluation results expressed,salicylic acid concentration of 1 .0 mmol /L was the best for 5 ℃ low temperature stress in Sedum aizoon L..关键词
水杨酸/低温胁迫/养心菜/生理代谢Key words
Salicylic acid/Low temperature stress/Sedum aizoon L./Physiological metabolism分类
农业科技引用本文复制引用
徐冬梅,贺忠群,张杰..外源水杨酸对低温胁迫下养心菜生理代谢的调节作用[J].华北农学报,2016,31(4):138-145,8.基金项目
四川省教育厅项目 （）
