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《Northern Horticulture》 2016-10
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Effect of Exogenous Hormones 6-Benzylaminopurine and Gibberellin A_3 on Growth and Contents of Soluble Sugar of Dendrobium officinale

QIN Jieming;ZHANG Dangquan;HE Hanjie;Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees,Ministry of Education,Central South University of Forestry and Technology,Hunan Provincial Key Laboratory of Forestry Biotechnology;  
Taking seedling of Dendrobium officinale as materials,under salt stress condition(100 mmol·L~(-1)),the effects of 6-Benzylaminopurine(6-BA)and gibberellin A3(GA3)on its growth,contents of pigments and soluble sugar were studied.The results showed that the growth rate of root of Dendrobium officinale treated by 2.0mg·L~(-1) 6-BA was enhanced remarkably,and 4.0mg·L~(-1) GA3 obviously raised its growth rate of root,but both 6-BA and GA3 reduced growth rate of stem.2.0mg·L~(-1) 6-BA decreased the content of chlorophyll b,while 4.0mg·L~(-1) 6-BA increased the content of chlorophyll b,but different concentration of 6-BA had no obvious effects on the contents of chlorophyll a and caroteniod.2.0mg·L~(-1) GA3 lifted the contents of chlorophyll a,chlorophyll b and caroteniod,but 6.0mg·L~(-1) GA3 reduced the content of chlorophyll b.Both 4.0mg·L~(-1) 6-BA and 6.0mg·L~(-1) GA3 enhanced the content of soluble sugar.So adding appropriate concentration of exogenous hormones promoted synthesis and accumulation of soluble sugar in seedling of Dendrobium officinale.
【Fund】: 湖南省自然科学基金资助项目(2015JJ3178);; 长沙市科技攻关资金专项资助项目(K1406011-21)
【CateGory Index】: S567.239
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