摘要
分别采用不同浓度的脱落酸(ABA)、水杨酸(SA)单独及复合(ABA+SA)处理冬小麦东农冬麦1号种子,对冬小麦东农冬麦1号种子进行浸种,用10%聚乙二醇(PEG-6000)模拟干旱胁迫,测定种子在干旱胁迫下发芽过程中的发芽率、发芽势、发芽指数等指标以及丙二醛含量.通过各项指标对比,研究ABA和SA在干旱胁迫条件下对冬小麦种子萌发的影响.结果表明,干旱胁迫下,经过一定浓度的ABA和SA单独及复合处理后冬小麦种子的萌发指标均显著提高,ABA的抗干旱效果较SA更具优势,且两者复配作用效果优于单独作用,二者配比组合(10^(-5)mol·L^(-1)ABA+10^(-3)mol·L^(-1) SA)的抗旱效果最为显著.
Using different concentrationsof abscisic acid(ABA),salicylic acid(SA)and the combination of ABA and SA(ABA + SA) to soak the seeds.And the seeds of winter wheat Dongnong dongmai No. 1 were soaked,the drought stress environment was simulated with 10% polyethylene glycol(PEG-6000),the further study the effects of ABA and SA on winter wheat seed germination under drought stressby measuring the date of the germination rate,germination potential,germination index and malondialdehyde content.The results showed that,under drought stress,the germination index of winter wheat seeds treated with certain concentration of ABA and SA alone or combined increased significantly.The drought resistance effect of abscisic acid was better than that of salicylic acid,and the combined effect of ABA and SA was better than that of abscisic acid or salicylic acid alone,and the combination of ABA and SA(10^(-5)mol·L^(-1)ABA+10^(-3)mol·L^(-1)SA)had the most significant drought resistance effect.
作者
孙玉婷
刘丽杰
王璐瑶
丁美云
于梦迪
李珊珊
金忠民
张东向
SUN Yuting;LIU Lijie;WANG Luyao;DING Meiyun;YU Mengdi;LI Shanshan;JIN Zhongmin;ZHANG Dongxiang(School of Life Science and Agriculture Forestry,Qiqihar University,Qiqihar 161006,China)
出处
《高师理科学刊》
2022年第1期43-49,共7页
Journal of Science of Teachers＇College and University
基金
黑龙江省省属本科高校基本科研业务费项目(135509502)
研究生创新项目(160611121014)
大学生创新创业训练项目(202110232184,202110232355,202110232393)。
关键词
脱落酸
水杨酸
干旱胁迫
冬小麦
种子萌发
abscisic acid(ABA)
salicylic acid(SA)
drought stress
winter wheat
seed germination
