多效唑对流苏石斛试管苗生长的影响  

Effect of PP333 on the growth of Dendrobium fimbriatum plantlets

作　　者：莫昭展[1] 贝学军[1] 符韵林[2] 

机构地区：[1]玉林师范学院,广西玉林537000 [2]广西大学林学院,广西南宁530004

出　　处：《福建林业科技》2008年第4期182-184,194,共4页Journal of Fujian Forestry Science and Technology

基　　金：广西教育厅科研项目(2007108)

摘　　要：研究不同浓度多效唑对流苏石斛试管苗生长影响的结果表明：多效唑能缩短流苏石斛试管苗再生芽分化的时间，促进再生苗根的分化，提高生根的数量；同时，多效唑能使再生苗的叶片变短、变大，对再生植株有显著的矮化作用，使植株的茎段变短、变粗，抑制根的伸长生长。多效唑对流苏石斛试管苗生长的影响具有明显的规律性，低浓度时其效果均随着浓度的升高而增强，并在1～1．5mg-L^-1的范围内达到最佳效果，再提高浓度则趋于饱和。The effect of PP333 with different concentration on the growth of plantlets of Dendrobium fimbriatum was studied. The results showed that PP333 could shorten the time of regenerative buds from plantlets, accelerate root differentiation, and increase the amount of the roots. Meanwhile plantlets had shorter and larger leaves, shorter and stronger stem under the treatment of PP333, but the root growth was restrained. It is obvious that the effect of PP333 on growth of the plantlets was regular. This effect got stronger as the concentration of PP333 was higher. It became the strongest in the range from 1 mg.L^- 1 to 1.5 mg.L^- 1 and kept saturation level even the concentration was raised.

关 键 词：多效唑 流苏石斛 试管苗 再生 

分 类 号：Q943.1[生物学—植物学]