黑叶紫薇组培苗生根技术的研究

摘要

以黑叶紫薇组培苗为材料研究了不同生长素种类和浓度对其试管内生根的影响,并研究了各种基质对生根苗移栽与试管外生根的影响.结果表明:黑叶紫薇试管内生根较好的生长调节剂配比为IBA0.5 mg/L;生根苗移栽较好的基质配比为珍珠岩:泥炭土=3∶7;试管外生根较好的基质配比为河沙:腐殖土=5∶5.%Tissue culture plantlets of Lagerstroemia indica were used to study the effects of different auxins on in-vitro rooting,and the effects of various media in transplanting of rooted plantlets and ex-vitro rooting.For in-vitro rooting of test-tube plantlets of Lagerstroemia indica,0.5 mg/L IBA is a suitable growth regulator;in the case of transplanting of rooted plantlets,the medium ratio of peat soil to perlite at 7:3 is better;and as to ex-vitro rooting of Lagerstroemia indica plantlets,the medium ratio of peat soil to perlite at 3:7 is more suitable.