水稻种衣剂对秧苗生长、酶活性及内源激素的影响  

Effects of Rice Seed-coating Agent on Seedling Growth,Enzyme Activities and Internal Hormones of Rice

作　　者：熊远福[1] 邹应斌[2] 文祝友[3] 江巨鳌[1] 熊海蓉[1] 唐启源[2] 

机构地区：[1]湖南农业大学分析测试中心 [2]湖南农业大学农学院 [3]湖南农业大学动物科技学院,长沙410128

出　　处：《中国农业科学》2004年第11期1611-1615,共5页Scientia Agricultura Sinica

基　　金：国家"十五"科技攻关重大专项资助项目(2001BA507A-01);国家农业科技成果转化基金资助项目(02EPN214300453);湖南省教育厅优秀青年基金资助项目(02B008)

摘　　要：通过湿润育秧试验,研究了浸种型水稻种衣剂对秧苗生长、苗体酶活性及内源激素的影响。结果表明,浸种型水稻种衣剂具有促进种子萌发与秧苗生长、增强秧苗抗逆性、提高秧苗综合素质与成秧率等作用,但作用程度在杂交品种和常规品种间存在一定差异。与对照相比,包衣处理苗体过氧化物酶(POX)、过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性分别提高17.0%～26.3%、7.0%～10.1%和1.1%～1.7%;内源激素吲哚乙酸(IAA)、赤霉素(GA3)含量分别提高19.2%～25.9%和32.2%～50.0%;而脱落酸(ABA)含量降低5.6%～15.0%;叶绿素含量和成秧率分别提高18.7%～38.5%和8.5%～10.3%。Effects of soaking-suitable rice seed-coating agent on seedling growth, some enzyme activities and internal hormones were studied by means of experiment of water-raised seedling with coated seeds of hybrid and conventional rices. Results showed that this seed-coating agent not only could promote seed germination and seedling growth, increase seedling resistance to adverse environments, but also could enhance seedling qualities and adult seedling rate. These effects, hower, are different on hybrid and conventional varieties. The activities of pexoxidase (POX), catalase(CAT) and superaxide dismutase (SOD) in seedlings increased by 17.0%-26.3%, 7.0%-10.1% and 1.1%-1.7% compared with uncoated controls, respectively.The contents of 3-indoleacetic acid (IAA) and gibberellin(GA3) increased by 19.2%-25.9% and 32.2%-50.0%, respectively. The content of abscisic acid(ABA) decreased by 5.6%-15.0%. The chlorophyll contents of seedlings increased by 18.7%-38.5%, and adult seedling rates increased by 8.5%-10.3%.

关 键 词：水稻 种衣剂 秧苗生长 酶活性 内源激素 湿润育秧试验 种子包衣 

分 类 号：S511[农业科学—作物学] S351.1