南京林业大学学报(自然科学版) ›› 2009, Vol. 33 ›› Issue (03): 20-24.doi: 10.3969/j.jssn.1000-2006.2009.03.006

• 研究论文 • 上一篇    下一篇

苞叶杜鹃离体培养及种质试管保存体系的建立

顾地周1,邓志刚2,綦茂伟1,曹逊1,朱俊义1,姜云天1   

  1. 1.通化师范学院生物系,吉林通化134002;2.通化市城市绿化管理处,吉林通化134001
  • 出版日期:2009-06-18 发布日期:2009-06-18
  • 基金资助:
    收稿日期:2008-05-12修回日期:2008-11-31基金项目:吉林省科技厅资助项目(200705C05);通化师范学院自然科学基金资助项目(XS070080)作者简介:顾地周(1973—),讲师,研究方向为珍稀濒危植物和药用植物资源及利用。Email: gudizhou@163.com。引文格式:顾地周,邓志刚,綦茂伟,等. 苞叶杜鹃离体培养及种质试管保存体系的建立[J]. 南京林业大学学报:自然科学版,2009,33(3):20-24.

In vitro culture and in vitro germplasm preservation system of Rhododendron redowskianum Maxim.

GU Dizhou1, DENG Zhigang2, QI Maowei1, CAO Xun1, ZHU Junyi1, JIANG Yuntian1   

  1. 1.Department of Biology, Tonghua Normal University, Tonghua 134002, China; 2.Tonghua City Afforestation Administrative Office, Tonghua 134001, China
  • Online:2009-06-18 Published:2009-06-18

摘要: 以苞叶杜鹃新生嫩芽为外植体,应用均匀设计法筛选其最适合的培养基,建立了苞叶杜鹃的离体培养和种质试管保存体系。结果表明:适合苞叶杜鹃基部直接再生芽苗的诱导培养基为DR+TDZ(1.80 mg/L)+IBA(005 mg/L),此条件下芽苗分化率为100%;生根培养基为MS(改良)+IBA(0.08 mg/L)+NAA(0.02 mg/L)+KT(0.15 mg/L),这一条件下芽苗生根率达99%以上;试管保存培养基为1/7MS+B9(1.30 mg/L)+根皮苷(2.80 mg/L),常温条件下保存时间超过35个月。以苞叶杜鹃再生植株茎节为材料进行快繁的结果表明,在35 d的培养周期内,平均增殖倍数超过55倍。

Abstract: The tender buds of Rhododendron redowskianum Maxim. were used as explants and suitable medium compositions were screened through uniform design experiments. The results showed that DR+TDZ(1.80 mg/L)+IBA(0.05 mg/L) was the most suitable for shoots regeneration immediately at base of tender buds with a regeneration rate of 100%. MS(modified)+IBA(0.08 mg/L)+NAA(0.02 mg/L)+KT(0.15 mg/L) was most suitable for rooting with a rooting rate of 99%. 1/7MS+B9(1.30 mg/L)+Phloridzin(2.80 mg/L) was most suitable for in vitro germplasm preservation under which the plant materials could be maintained for 35 months at normal temperature. Stems each with one node were cut from regenerated shoots and cultured for propagation, and a 55fold proliferation rate was achieved within 35 days. In vitro culture and in vitro germplasm preservation system of Rh.redowskianum Maxim. has been successfully established in this study.

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