园林植物嫩枝试管内生根技术研究

[目的]摸索出园林植物月季、长春花、长寿花、大叶红草试管内嫩枝扦插生根的最佳培养基配方。[方法]在无菌条件下，对这4种园林植物的嫩茎进行试管内扦插试验。[结果]在每种配方中加入蔗糖20g/L、活性炭2g／L、琼脂7g／L，pH值为5．6的条件下，配方1／2MS＋IBA0．5mg／L最有利于月季试管内嫩茎扦插生根；1／2Ms＋NAA0．5mg／L配方更加适合作为长春花嫩茎的生根剂；1／2MS＋IBA0．4mg／L最适合作为长寿花嫩茎扦插生根配方；培养基1／2Ms＋NAA0．4mg／L配方适合大叶红草嫩茎试管内扦插生根。[结论]不同园林植物嫩枝试管内生根的最佳激素种类和浓度有所差别。

Exploration of Taking Root Skill about Tender Garden Plants in Tubes

[Objective] Try to find out the best culture medium formulas of taking roots in tubes about Rosa chinensis,Catharanthus roseus,Kalanchoe blossfeldiana,Altemanthera Ficoidea.[Method] Under the condition of fungus less,cutting tests were carried out about the tender stems of the four kinds of landscape plants in tubes.[Result] Under the conditions of adding sucrose 20 g/L,active carbon 2 g/L,agar 7 g/L to each formulas,and pH 5.6,the formula 1/2 MS+IBA 0.5 mg/L was beneficial to tack roots in tubes about the tender stems of Rosa chinensis;1/2 MS+NAA 0.5 mg/L was beneficial to tack roots in tubes about the tender stems of Catharanthus roseus;1/2 MS+IBA 0.4 mg/L was beneficial to Kalanchoe blossfeldiana and 1/2 MS+NAA 0.4 mg/L was beneficial to Altemanthera Ficoidea.[Conclusion] The tender stems of different landscape plants have different demands in hormones when they take roots in tubes.