低温胁迫对刨花楠苗期细胞保护系统及生理生化物质的影响  

Effects of Chilling Stress on Cell Protecting System and Physiological and Bio-chemical Properties of Machilus pauhoi Seedlings

作　　者：吴国训[1] 吴田兵 查宝源 胡松竹[1] 

机构地区：[1]江西农业大学园林与艺术学院 [2]铅山县林业局,江西铅山334500 [3]婺源县林业局,江西婺源333200

出　　处：《江西林业科技》2008年第4期14-16,共3页Jiangxi Forestry Science and Technology

基　　金：江西省科技厅农业科技攻关重点项目"刨花楠工业用材林定向培育技术"(项目编号:20031B0204200)部分内容

摘　　要：以4年生刨花楠扦插苗叶片为实验材料,模拟低温环境,研究刨花楠在低温下的生理生化变化。研究结果表明:随着处理温度的降低,细胞相对电导率先上升后下降,POD活性先下降后上升,SOD活性和可溶性糖以及游离脯基酸含量先上升,再下降,最后又上升,MDA含量先下降,再上升,最后又下降。Simulating chilling environment and using the leaf of 4-years old seedling of Machihs pauhoi, the physiological and bio-chemical characteristics change of M. pauhoi in chilling was studied. The results are as follows： the cell relative permeability increased first and then decreased with the temperature dropping; the activity of POD decreased first and increased later, the activity of SOD, content of soluble sugar and PRO increased first, then decreased, increased at last; the content of MDA decreased first, and then increased, decreased at last.

关 键 词：低温胁迫 刨花楠 超氧化物歧化酶 游离脯氨酸 

分 类 号：Q945.78[生物学—植物学] S792.23[农业科学—林木遗传育种]