摘要
以玉米品种青农8号为材料,采用缺水和18%PEG-6000溶液模拟干旱条件的方法,研究玉米幼苗根系几个生理生化指标的变化。结果表明:干旱条件下,玉米幼苗根系可溶性蛋白含量、丙二醛(MDA)含量及超氧化物歧化酶(SOD)和过氧化物酶(POD)活性都呈明显增加趋势,并且在缺水处理96 h后增幅减小;缺水48 h后复水可使干旱时迅速增加的SOD、POD活性和丙二醛含量恢复到正常状态,可溶性蛋白含量比正常含量低。
The changes of several physiological and biochemical indexes of seedling roots of new maize variety Qingnong 8 were studied under the simulated drought conditions through water shortage and 18%PEG-6000.The results showed that under drought condition, the content of soluble protein, malonialdehy （ MDA） and the activity of superoxide dismutase （ SOD） and peroxidase （ POD） in roots of maize seedlings significantly increased, and the increasing amplitude reduced after water shortage for 96 hours.The re-wate-ring treatment results after water shortage for 48 hours showed that the SOD and POD activities and the MDA content could recover to normal level, and the soluble protein content was lower than normal content.This study showed that the maize seedlings of Qingnong 8 suffered drought injury could grow normally after re-wa-tering treatment.
出处
《山东农业科学》
2015年第4期26-29,33,共5页
Shandong Agricultural Sciences
基金
青岛农业大学特色名校工程建设"大学生科技创新项目"
山东省现代农业产业技术体系玉米产业创新团队建设项目(SDAIT-01-022-01)
关键词
玉米
干旱胁迫
根系
生理生化指标
Maize
Drought stress
Roots
Physiological and biochemical indexes
