摘要
采用10%PEG-6000模拟干旱胁迫,研究不同浓度(0、0.001、0.01、0.05、0.1、1.0和2.0mmol·L^(-1))的水杨酸浸种对干旱胁迫下玉米种子萌发及幼苗生长的影响。结果表明:与对照相比,10%PEG胁迫对玉米种子萌发及幼苗生长有明显的抑制作用,使可溶性蛋白质含量明显降低,MDA含量升高,POD、CAT和SOD活性降低。适宜浓度水杨酸浸种对玉米种子萌发及幼苗生长有明显的促进作用,可溶性蛋白质含量增加,MDA含量降低,POD、CAT和SOD活性增强,其中以浓度为0.01~0.05mmol·L^(-1)效果最好。
By pre-soaking corn seeds in varied concentrations of salicylic acid solutions （i. e. , 0, 0. 001, 0. 01, 0.05, 0.1, 1.0, and 2.0 mmol ·L^-1 ）, the effects on the seed germination and seedling growth under a simulated drought stress using 10% PECk6000 were studied. The results showed that, without the pre-soaking treatment, the germination and growth were significantly inhibited by the stress. In addition, the soluble protein content decreased significantly and MDA increased, while POD, CAT and SOD activities decreased in the sprouted seedlings. By pre- soaking the seeds in a salicylic acid solution of concentrations ranging from 0.01 to 0.05 mmol ·L^-1 , significant improvements on the seed germination and seedling growth were observed. Meanwhile, the soluble protein in the corn plants increased, the MDA contents decreased, and the POD, CAT and SOD activities increased.
作者
肖小君
黄倩
罗陈勇
王芳
XIAO Xiao-jun HUANG Qian LUO Chen-yong WANG Fang(School of Life Science, Neijiang Normal University, Neijiang, Sichuan 641100, China Key Laboratory of Colleges and Universities in Sichuan for Research and Utilization of Distinctive Agricultural Undertakings, Neijiang, Sichuan 641100, China)
出处
《福建农业学报》
CAS
北大核心
2017年第6期583-586,共4页
Fujian Journal of Agricultural Sciences
基金
四川省教育厅项目(16ZB0304)
四川省教育厅科研创新团队项目(14TD0025)
关键词
水杨酸
玉米种子
干旱胁迫
生理指标
salicylic acid
corn seeds
drought stress
physiological characteristics
