4种植物抗热性比较研究  

Comparative Studies on the Heat Resistance of 4 Species of Plants

作　　者：辛雅芬[1] 石玉波[2] 沈婷[1] 茅慧莉[1] 

机构地区：[1]上海农林职业技术学院,上海201600 [2]东北林业大学,黑龙江哈尔滨150040

出　　处：《安徽农业科学》2011年第8期4431-4432,4501,共3页Journal of Anhui Agricultural Sciences

基　　金：上海绿化树种生态适应性调查与评价

摘　　要：[目的]探讨植物对高温的适应性机制。[方法]分别以八仙花、八角金盘、北海道黄杨和熊掌木的1年生扦插苗为试验材料,将其置于光照培养箱中进行培养,以25℃处理为对照,研究不同培养温度(30、35、40℃)下4种植物叶片丙二醛和可溶性蛋白含量、相对含水量、电导率等的变化情况。[结果]随温度升高,4种植物叶片总含水量下降,电导率及丙二醛、可溶性蛋白含量上升,其中含水量下降幅度依次为:熊掌木>北海道黄杨>八仙花>八角金盘,电导率上升幅度依次为:北海道黄杨>熊掌木>八角金盘>八仙花,可溶性蛋白积累量依次为:八仙花>八角金盘>北海道黄杨>熊掌木。[结论]八仙花和八角金盘的抗热性较强,北海道黄杨和熊掌木的抗热性较弱。[Objective] The purpose of the study was to discuss the adaptability mechanism of plant to high temperature.[Method] The 1-year old cutting seedlings of Hydrangea macrophylla,Fatsia japonica,Euonymus japonicus and Fatshedera lizei were used as tested materials resp.With treatment at 25 ℃ as CK,they were cultivated in irradiant incubator for studying the changes of malonaldehyde（MDA） content,soluble protein content,relative water content and conductivity in the leaves of 4 plants under different cultivation temperatures of 30,35 and 40 ℃ resp.[Result] As the temperature was increasing,the total water contents in the leaves of 4 plants were decreased and their conductivities,MDA contents and soluble protein contents were increased.The decreasing extents of their water contents were： F.lizeiE.japonicusH.macrophyllaF.japonica,the increasing extents of their conductivities were： E.japonicusF.lizeiF.japonicaH.macrophylla,the accumulation amounts of soluble protein were： H.macrophyllaF.japonicaE.japonicusF.lizei.[Conclusion] The heat resistance of H.macrophylla and F.japonica was stronger and that of Hokkaido boxwood and F.lizei was weaker.

关 键 词：抗热性 生理指标 比较研究 

分 类 号：X174[环境科学与工程—环境科学]