南方农业学报2013，Vol.44Issue(6)：918-923,6.DOI:10.3969/j:issn.2095-1191.2013.6.918
牛耳朵幼苗对低温胁迫的生理响应
Physiological response of Chirita eburnea Hance seedling to chilling stress
摘要
Abstract
[Objective]Physiological response of Chirita ebumea Hance seedling to chilling stress was clarified to provide references for artificial cultivation.[Method]Young plants were treated under 5 ℃ for 12 h,24 h and 36 h respectively,and then recovered at 25℃ for 24 h and 48 h.The physiological indexes such as photochemical efficiency (Fv/Fm),leaf relative water content,electrolyte leakage,SOD activity and MDA content were measured.[Result]The results showed that Fv/Fm decreased along with the increasing of chilling time and could be recovered to normal level after chilling.Water content of leaves had a slight descending trend.The electrolyte leakage increased with the increasing of low temperature treating time and dropped again during the recovery.SOD activity and MDA content increased along with the treating time but could recover gradually.[Conclusion]The continuous low temperature treatment for 36 h at 5℃ caused a certain physiological stress but not critical damage,so the young plants of Chirita eburnean could gradually recover to normal growth.关键词
牛耳朵/低温胁迫/恢复生长/生理指标Key words
Chirita eburnea Hance/chilling stress/growth recovery/physiological index分类
农业科技引用本文复制引用
孙国胜,邓敏,李谦盛,郭谢颖..牛耳朵幼苗对低温胁迫的生理响应[J].南方农业学报,2013,44(6):918-923,6.基金项目
上海市绿化和市容管理局科技攻关项目(F122414,F112419) （F122414,F112419）
上海市教委科研创新项目(12YZ157) （12YZ157）
