伯乐树组织培养快繁技术研究

[目的]筛选伯乐树的最佳芽诱导、增殖生根培养基及炼苗基质。[方法]以伯乐树种子无菌萌发的胚芽为外植体，以MS为基本培养基，添加不同浓度的BA、IBA和NAA进行胚芽诱导培养；以不同浓度的琼脂、蔗糖、NAA、BA为因子作正交设计试验，进行继代增殖培养，并附加不同浓度的IBA和NAA进行生根培养。[结果]伯乐树芽诱导最佳培养基为MS＋BA1．0mg／L＋NAA0．1mg／L，出芽率最高，达71．34％，芽体高度为5．30cm；最佳增殖培养基为MS＋BA2．0mg／L＋NAA0．1mg／L＋琼脂1．0％＋蔗糖2．5％．胚芽增殖系数达3．6，芽体高度为3．1cm；最适宜的生根培养基为MS＋IBA3．0mg／L＋琼脂0．8％＋蔗糖3．0％，生根率达到89％；伯乐树试管苗的最适炼苗基质为蛭石25％＋珍珠25％＋河沙50％，移栽成活率可达65％。[结论]建立了伯乐树组织培养快速繁殖技术体系。

Study on the Rapid Propagation with Tissue Culture of Bretschneidera sinensis

[Objective]The study aimed to screen the best medium for bud induction,proliferation,rooting and the matrix for training plantlets of Bretschneidera sinensis.[Method]With the embryo bud of aseptic budding of B.sinensis seeds as explant,and MS as basic medium, cytokinins BA,auxin IBA and NAA with different concn.were added to conduct bud induction culture;with agar,sucrose,NAA,BA with different concn.as factors to do the orthogonal experimental design for multiplication cultivation of subculture,and the IBA ...