摘要
研究了外源一氧化氮(NO)供体硝普钠(SNP)对150 mmol/L NaCl胁迫下,白菜种子的发芽率、发芽势、幼苗MDA含量和SOD活性。结果表明:适当浓度的SNP能明显提高盐胁迫下白菜种子的发芽率和发芽势;较低浓度的SNP处理可明显缓解盐胁迫下4叶期白菜幼苗中MDA的积累,提高SOD酶活性;过高浓度的SNP会产生胁迫作用,发芽率和发芽势下降,MDA含量上升,SOD酶活性下降。
The germination rate,germination vigor,MDA content and SOD activity of the Chinese cabbage treated by SNP,an exogenous nitric oxide donor,at the different concentration under 150 mmol/L NaCl stress were studied.The results showed that moderate concentration could enhance germination rate,germination vigor,reduced MDA content and increased SOD activity of the cabbage seedling at 4-leaf stage.However,excess concentration of SNP brought stress to cabbage,such as reduced germination rate and germination vigor,increased MDA content and reduced SOD activity in seedling.
出处
《北方园艺》
CAS
北大核心
2010年第20期59-61,共3页
Northern Horticulture
