基质、促根剂及插穗对杜鹃红山茶扦插生根的影响  

Effect of Cutting Propagation Techniques of Camellia azalea on Its Rooting Rate

作　　者：李先民[1] 李春牛[1] 卜朝阳[1] 蒋月喜 

机构地区：[1]广西农业科学院花卉研究所,广西南宁530007

出　　处：《西南农业学报》2017年第2期426-431,共6页Southwest China Journal of Agricultural Sciences

基　　金：广西农业科学院基本科研业务专项项目(2015YT91;2015YT89)

摘　　要：为探索不同处理对杜鹃红山茶硬枝扦插生根的影响,以1年生杜鹃红山茶枝条作为扦插材料,分别探讨基质种类、IBA和NAA的应用、来自枝条不同部位的插穗及插穗留叶片数等因素对扦插生根的影响。结果表明,不同基质对杜鹃红山茶扦插的生根率、愈伤率、根长和生根数等各扦插指标的影响差异达极显著水平,经300 mg/L IBA+300 mg/L NAA处理3 h后,扦插于混合基质(V_(珍珠岩)∶V_(椰糠)=1∶1)的插穗生根率最高,达76.67%;采用IBA作为促根剂其浓度与处理插穗的时间对插穗的生根率有极显著影响,NAA浓度对于插穗生根率的影响不显著,经400 mg/L IBA+100 mg/L NAA处理4 h的插穗生根率最高,达80.56%;枝条基部所剪制插穗扦插的生根率明显高于枝条中上部,从生根率角度考虑,选择枝条基部剪制插穗并保留两片半叶为佳。The research aimed to explore the effects of different treatments on rooting of Camellia azalea hard-wood cutting. Using the one- year-old hardwood of Camellia azalea as cutting materials, the influences of different factors, including cutting mediums, application of IBA and NAA, cutting collection positions and leaf-retention on cutting rooting rate were studied. The results were shown as follows ： the different cutting medium presented had a significantly different effects on cutting rooting rate, callus rate, root length, and root number, and the roo- ting rate was up to 76.67 % on the mixed medium （ Vperlite ： Vcoir = 1 ： 1 ） with cuttings soaked in 300 mg/L IBA ＋ 300 mg/L NAA for 3 hours. Different IBA concentration and cuttings soaking time significantly affected the rooting rate. Different NAA concentration had no sig- nificant effect on the rooting rate. The highest rooting rate （80.56 % ） came from the treatment by 400 mg/L IBA ＋ 100 mg/L NAA for 3 hours soaking. In terms of the cutting rooting rate, cuttings from the basal section of branches and 2.5 leaves left was preferred for C. azalea hardwood cutting.

关 键 词：杜鹃红山茶 扦插基质 促根剂 插穗类型 生根率 

分 类 号：S685.14[农业科学—观赏园艺]