常用促根生长调节剂对闽楠高空压条生根的影响  

Effects of Rooting Plant Growth Regulators on Rooting of Air-layers of Phoebe bournei

作　　者：郑雨盼 杨锦昌[1] 邹文涛[1] 王旭[1] 余纽 刘晓东 赖旭恩 李荣生[1] ZHENG Yupan;YANG Jinchang;ZOU Wentao;WANG Xu;YU Niu;LIU Xiaodong;LAI Xuen;LI Rongsheng(Research Institute of Tropical Forestry,Chinese Academy of Forestry/Key Laboratory of National Forestry and Grassland Administration on Tropical Forestry Research,Guangzhou,Guangdong 510520,China;Nanjing Forestry University,Nanjing,Jiangsu 210037,China;Longshan Forest Farm of Lechang,Lechang,Guangdong 512221,China)

机构地区：[1]中国林业科学研究院热带林业研究所/国家林草局热带林业研究重点实验室,广东广州510520 [2]南京林业大学,江苏南京210037 [3]乐昌市龙山林场,广东乐昌512221

出　　处：《热带作物学报》2020年第9期1803-1807,共5页Chinese Journal of Tropical Crops

基　　金：广东省林业科技创新项目(No.2018KJCX020);“十三五”国家重点研发计划课题“楠木高效培育技术研究”(No.2016YFD0600603)。

摘　　要：闽楠(Phoebe bournei)是我国乡土珍贵用材造林树种。本研究以6年生闽楠幼树的枝条为试材,采用随机区组试验设计,分别开展单种促根生长调节剂和混合促根生长调节剂高空压条试验,研究不同浓度植物生长调节剂对其高空压条生根的影响。结果表明,在吲哚乙酸、吲哚丁酸和萘乙酸3种促根生长调节剂中,萘乙酸为压条最适生长素,1000 mg/L萘乙酸处理组生根效果最佳,生根率为54.67%;对吲哚丁酸和萘乙酸混合的ABT1#生根粉而言,1000 mg/L为最适处理浓度,该处理浓度下压条的最大一级根长和根生物量皆优于对照。可见,闽楠幼树高空压条宜施用1000 mg/L的萘乙酸或ABT1#生根粉。Phoebe bournei is a precious and endemic tree cultivated in China.To explore the effects of growth regulators on rooting of P.bournei,research was conducted with different concentrations by a randomly complete block design.Single root stimulator,i.e.,indole acetic acid(IAA),indole-3-butyric acid(IBA)and naphthalene acetic acid(NAA),and mixed root stimulators namely ABT1#rooting powder were applied to the 6-year-old branches.NAA was the optimum auxin for rooting of the air-layered branches,and the branches treated with 1000 mg/L had the highest rooting rate of 54.67%.For ABT1#rooting powder consisted of IBA and NAA,1000 mg/L was the optimal concentration,and the maximum first-order root length and root biomass of the air-layered branches at the concentration were better than that of the control.It is concluded NAA or ABT1#rooting powder was recommended to be applied at the level of 1000 mg/L in the air layering for saplings of P.bournei.

关 键 词：闽楠 高空压条 ABT1#生根粉 吲哚乙酸 吲哚丁酸 萘乙酸 

分 类 号：S722.8[农业科学—林木遗传育种]