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园艺学报 ›› 2008, Vol. 35 ›› Issue (4): 603-606.

• 研究简报 • 上一篇    下一篇

牛皮杜鹃的组培快繁及种质试管保存技术

顾地周*; 孙忠林;何晓燕; 张秋菊;朱俊义   

  1. (通化师范学院生物系,吉林通化 134002)
  • 收稿日期:2007-11-06 修回日期:2008-03-10 出版日期:2008-04-25 发布日期:2008-04-25
  • 通讯作者: 顾地周

A Study on Micropropagation and Germplasm Preservation in Tube of Rhododendron chrysanthum Pall.

GU Di-zhou*, SUN Zhong-lin, HE Xiao-yan, ZHANG Qiu-ju, and ZHU Jun-yi   

  1. (Department of Biology, Tonghua Normal University, Tonghua, Jilin 134002, China)
  • Received:2007-11-06 Revised:2008-03-10 Online:2008-04-25 Published:2008-04-25
  • Contact: GU Di-zhou

摘要: 以牛皮杜鹃休眠芽为外植体,筛选最适合萌发、再分化、生根和种质试管保存的培养基。结果表明最适合休眠芽萌发的培养基为:1/4 MS + GA3 1.5 mg·L-1 + 维生素C 20 mg·L-1 ;基部直接再分化培养基为:1/4 MS + 6-BA 4.0 mg·L-1 + NAA 0.3 mg·L-1 ;生根培养基为:MS + IBA 0.46 mg·L-1 + 活性炭450 mg·L-1 ;种质试管保存培养基为:1/6 MS(大量元素)+ 1/4 MS(微量元素)+ 1/2 MS(铁盐)+ 1/4 MS(有机物质)+ B9 3.5 mg·L-1 。牛皮杜鹃组织培养的不同阶段需要不同的培养基,常温条件下,利用低营养矮化常温的方法在试管内保存种质资源。

关键词: 牛皮杜鹃, 组织培养, 再分化, 种质试管保存

Abstract: Dormant buds of Rhododendron chrysanthum Pall. were used as explants for the experiment. The most suitable media for inducement, differentiation, rooting and germplasm preservation in tube were screened. The results showed that 1/4 MS + GA31.5 mg·L-1 + vitamin C 20 mg·L-1 was fit for sprouting of dormant buds, 1/4 MS + 6-BA 4.0 mg·L-1 + NAA 0.3 mg·L-1 for differentiation, MS + IBA 0.46 mg·L-1 + active carbon 450 mg·L-1 for rooting, and 1/6 MS (macro-elemenyts) + 1/4 MS (micro-elements) + 1/2 MS (ferric salt) +1/4MS (organic substances) + B9 3.5 mg·L-1 for germplasm preservation in tube. Rhododendron chrysanthum tissue culture required different kinds of culture media in different phases. The method of dwarfing with low nutrients and normal temperature was utilized for germplasm peservation in tube at normal temperature.

Key words: Rhododendron chrysanthum Pall., tissue culture, differentiation, germplasm preservation in tube

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