摘要
分别在25℃、15℃、10℃不同温度处理下,研究了低温胁迫对茄子幼苗生长、抗氧化酶活性和渗透调节物质含量的影响。结果表明:随着温度降低,超氧物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性上升;MDA含量和O2-.产生速率,脯氨酸、可溶性蛋白和热稳定蛋白质含量也呈上升的趋势。随着胁迫时间延长,SOD、POD活性,O2-.产生速率逐渐上升;MDA及脯氨酸含量逐渐增加;可溶性蛋白和热稳定蛋白质含量则呈下降趋势;CAT活性变化不稳定。
The effects of low temperature on growth, activities of antioxidant enzymes and osmotic substance of eggplant seedlings were studied at 25 ℃, 15℃, 10℃ ,respectively. SOD, POD and CAT activities, malondialdehyde （MDA） content and O2^- · production rate, contents of proline, soluble protein and hot stable protein in the leaves were increased with temperature decrease. The activities of SOD and POD, MDA content and O2^-·production rate, proline contents were increased while the contents of soluble protein and hot stable protein were decreased as low temperature stress went on, however, CAT activity was changed unstablely.
出处
《江苏农业学报》
CSCD
北大核心
2008年第4期471-475,共5页
Jiangsu Journal of Agricultural Sciences
基金
上海市科技兴农重点公关项目[沪农科攻字(2006)第2-1号]
关键词
低温胁迫
茄子幼苗
生长
抗氧化酶活性
渗透调节物质
low temperature stress
eggplant seedling
growtb
activity of antioxidant enzyme
osmotic substance
作者简介
吴雪霞（1978-），女，山东荷泽人，博士研究生，主要从事茄子栽培生理和生物技术研究。（E—mail）：wuxuexiarose@sohu．com
通讯作者：查丁石，（E—mail）dingshizha@yahoo．com.cn
