摘要
以两个不同耐旱性的大豆品种为试材,研究了干旱胁迫对大豆苗期叶片保护酶活性和膜脂过氧化作用的影响及与抗旱性的关系。结果表明,随着干旱胁迫的加强,质膜透性和MDA含量逐渐增加,SOD、POD和CAT活性表现为先升后降的趋势。耐旱性品种比非耐旱性品种具有较低的质膜透性和MDA含量,同时具有较高的SOD、CAT和POD活性。重度干旱胁迫下POD活性高于SOD、CAT的活性。
The effects of drought stress on the protective enzymes activities and membrane lipid peroxidation in leaves of soybean seedlings and their relationship with drought tolerance were studied with two different drought-tolerant cultivars. The result showed that with the increase of drought stress, permeability of plasmas membrane and contents of MDA increased gradually, and activities of SOD.POD.CAT rose at first and lowered later. Much lower the rate of permeability of plasma membrane and malondialdephyde （MAD） contents were appeared in drought-tolerant cuhivars than those in drought-sensitive cultivars under drought stress. And the drought -tolerant ones had higher SOD.CAT and POD activities. In severe drought conditions, activities of POD were higher than those of SOD and CAT.
出处
《湖北农业科学》
北大核心
2007年第1期45-48,共4页
Hubei Agricultural Sciences
基金
河南省自然科学基金项目(0411031500)
关键词
大豆
干旱胁迫
保护酶活性
膜脂过氧化
soybean （Glycine max）
drought stress
activities of protective enzymes
membrane lipid peroxidation
