摘要
以1.0、1.5、2.0、2.5、3.0、3.5 mmol/L水杨酸和蒸馏水处理一叶一心期的水稻幼苗,然后分别置于5℃和自然条件下生长,研究了水杨酸对水稻幼苗抗冷性的影响。结果表明:在5℃低温胁迫下,经1.5 mmol/L水杨酸处理的水稻幼苗的脯氨酸含量、叶绿素含量和SOD活性均高于仅用蒸馏水处理的对照,而丙二醛含量则低于对照,表明一定浓度的水杨酸可增强水稻幼苗的抗冷性,但外源水杨酸处理对冷胁迫下水稻幼苗生长存在"低促高抑"的效应。
The seedlings of rice at one leave stage were treated with 0, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 mmol/L of salicylic acid （SA）. The effects of salicylic acid on resistance of rice seedlings to cold stress were studied. The results showed that salicylic acid could enhance the resistance of rice to cold stress and the concentration of salicylic acid at 1.5 mmol/L showed the most effective. The salicylic acid increased the content of protine and chlorophyll as well as the activity of SOD, while the malodiadehyde content decreased in the leave of treated plants. However, the effects of salicylic acid on resistance to cold stress of rice seedlings showed the characters ＂low to promote and high to suppress ＂.
出处
《广东农业科学》
CAS
CSCD
北大核心
2010年第1期18-20,共3页
Guangdong Agricultural Sciences
基金
上饶师范学院2008年科技项目(0813)
关键词
水稻
水杨酸
抗冷性
rice
salicylic acid
resistance to cold stress
作者简介
徐芬芬（1978-），女，硕士，讲师，E-mail：xffylm7875@163．com
