摘要
用不同浓度的GA_3浸种大白杜鹃种子并测定其萌发结果表明,不同浓度GA_3处理均能增强大白杜鹃种子活力,极显著提高种子发芽率和发芽势,其中500 mg·L^(-1)GA_3浸种处理的效果最明显。GA_3处理使种子的可溶性蛋白质含量降低,MDA含量下降,而SOD、POD和CAT活性增强。这表明GA_3浸种后能增强抗氧化酶的活性,降低膜脂过氧化程度,从而促进种子提前萌发。
To understand the influencing mechanism of GA3 on seed germination of Rhododendron decorum Franch., the seeds were soaked in solutions with different GA3 concentrations. The results showed that all treatments could enhance the activity of seeds and improve the rate of germination, especially treated with 500 mg.L1 GA3, which had the rate of germination improved remarkably, the contents of soluble protein and MDA decreased, while the activities of SOD, POD and CAT from the seeds increased. It indicated that after soaked with GA3 the seeds enhanced the activity of antioxidant enzymes and decreased the membrane lipid peroxidation.
出处
《植物生理学通讯》
CSCD
北大核心
2010年第8期793-796,共4页
Plant Physiology Communications
基金
贵州省重大科技攻关项目(黔科合重大专项字[2007]6005)
国家农业成果转化课题(2007GB2F200289)
关键词
大白杜鹃
GA3
浸种
萌发
Rhododendron decorum Franch.
GA3
seed immersion
germination
