摘要
在离体条件下，用聚乙二醇（ＰＥＧ６０００）形成渗透胁迫，研究了ＰＥＧ对大豆的渗透胁迫影响，外源激素对ＰＥＧ渗透胁迫的调节，以及外源羟自由基对大豆的影响。结果表明，随着ＰＥＧ浓度加大，渗透胁迫加重，对大豆叶片的影响也增大，不同大豆品种对渗透胁迫的反应不同．外源激动素可以在一定程度上减缓ＰＥＧ的渗透胁迫。外源激素能调节渗透胁迫，与它们对体内自由基含量的调节是分不开的。
Isolated culture results showed that osmotic stress became more severe as the concentration of PEG6000 increased, the effect of osmotic stress on soybean leaves became greater. Drought-resistant variety was affected to a lower degree than drought-susceptible variety. osmotic stress would result in the decreases of chlorophyll and carotenoid, and the increases of soluble protein content, MDA and membrane prmeability. KT to some degree could reduce the osmotic stress of PEG6000, which was associated with that exogenous hormones adjusted the content of radicals in soybean leaves.
出处
《沈阳农业大学学报》
CAS
CSCD
1995年第1期8-12,共5页
Journal of Shenyang Agricultural University
关键词
大豆
渗透胁迫
抗旱机理
外源激素
soybean
osmotic stress
mechanism of drought resistance
exogenoushormone
