三种不同生长调节剂对杜鹃光合特性的影响  

Effects of Three Different Growth Regulators on Photosynthetic Characteristics of Rhododendron simsii

作　　者：杨杰[1,2,3] 张中玮 张娟 刘艳 吴林世[2,4] 廖菊阳 王爱霞[2] Yang Jie;Zhang Zhongwei;Zhang Juan;Liu Yan;Wu Linshi;Liao Juyang;Wang Aixia(Taojiang County Forestry Bureau,Yiyang 413400,China;Hunan Forest Botanical Garden,Changsha 410116,China;College of Science Central South University of Forestry and Technology,Changsha 410004,China;Engineering and Technology Research Center for Rhododendron L.of National Forestry and Grassland Administration,Changsha 410116,China)

机构地区：[1]桃江县林业局,湖南益阳413400 [2]湖南省森林植物园,湖南长沙410116 [3]中南林业科技大学理学院,湖南长沙410004 [4]国家林草局杜鹃工程技术研究中心,湖南长沙410116

出　　处：《湖南生态科学学报》2020年第1期25-32,共8页Journal of Hunan Ecological Science

基　　金：国家林业行业公益性科研专项(201404301);湖南省重点研发计划项目(2017SK23322019);湖南省林业科技计划项目(XLK201942,XLK201821)。

摘　　要：选择三种不同生长调节剂,研究不同生长调节剂对杜鹃光合特性的影响,采用5个浓度梯度的IAA、GA 3、NAA对叶片进行喷洒处理,并进行不同时间、不同梯度的光合因子和光合-光响应曲线测定,使用叶子飘直角双曲线修正模型对光响应数据进行曲线拟合.结果表明:不同生长调节剂及浓度梯度对杜鹃植株产生的效果和影响各有差异.GA 3作为常用生长调节剂,提升净光合速率的效果优于IAA和NAA,更有利于营养物质在植株体内合成和转化,研究结果可为杜鹃花期调控技术提供参考依据.Three different growth regulators were selected to study the effects of different growth regulators on the photosynthetic characteristics of plants.The leaves of Rhododendron simsii were sprayed with IAA,GA 3 and NAA with 5 concentration gradients,and the photosynthetic factors and photosynthetic-light response curves of different time and different gradients were measured,and the light response data was curve-fitted using the leaf right angle hyperbolic correction model.The studies have shown that different growth regulators and concentration gradients have different effects.GA 3 is superior to IAA and NAA in improving the net photosynthetic rate,and it is more conducive to the synthesis and transformation of nutrients in plants.Therefore the results have important guiding significance and provide a new scientific basis for the control florescence technology of Rhododendron simsii.

关 键 词：IAA GA 3 NAA 生长调节剂 杜鹃 光合特性 

分 类 号：Q945.11[生物学—植物学]