多效唑对金钗石斛试管苗生长的影响  

Effect of PP_(333) on the growth of the plantlets of Dendrobium nobile

作　　者：黎建玲[1] 詹源庆[1] 蒋波[1] 

机构地区：[1]玉林师范学院,广西玉林537000

出　　处：《广西植物》2006年第5期513-515,共3页Guihaia

基　　金：广西区教育厅科研经费资助项目(2003(22))~~

摘　　要：多效唑是一种高效的植物生长延缓剂，通过不同浓度的多效唑对金钗石斛试管苗生长的影响进行研究。结果表明：多效唑能明显提高金钗石斛试管苗再生芽分化的数量，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，对再生植株有显著的矮化作用，使植株的茎段变粗，抑制根的伸长生长。多效唑对金钗石斛试管苗生长的影响具有明显的规律性，其作用效果均随着其使用浓度的升高而增强，并在3～4mg／L的范围处达到最强效果，再提高浓度则趋于饱和。PP333 is an effective vegetal retardant. The effect of PP333 with different concentration on the growth of plantlets of Dendrobiurn nobilewas studied. The results showed that PP333 could heighten the amount of regenerative bud from plantlets, accelerate root differentiation,and increase the amount of the root. Meanwhile, plantlets had shorter leaves and stronger stem under the treatment of PP333, but the root growing was restrained. It＇s obvious that the effect of PP333 on growth of the plantlets was regular. This effect got stronger as the concerntration of PP333 was higher. It became the strongest in the range from 3 mg/L to 4 mg/L,and kept this level even the concentration was raised.

关 键 词：多效唑 金钗石斛 试管苗 再生 

分 类 号：Q943.1[生物学—植物学]