南京林业大学学报(自然科学版) ›› 2010, Vol. 34 ›› Issue (02): 11-14.doi: 10.3969/j.jssn.1000-2006.2010.02.003

• 研究论文 • 上一篇    下一篇

赤松离体培养植株再生体系的建立

朱丽华1,2,吴小芹1,2*,戴培培1,2,张红岩1,2   

  1. 1.南京林业大学森林资源与环境学院,江苏南京210037;2.江苏省有害生物入侵预防与控制重点实验室,江苏南京210037
  • 出版日期:2010-05-14 发布日期:2010-05-14
  • 基金资助:
    收稿日期:2009-07-07修回日期:2009-10-22基金项目:“十一五”国家科技支撑计划(2006BAD08A19122)作者简介:朱丽华(1970—),博士后。吴小芹(通信作者),教授。Email: xqwu@njfu. com.cn。引文格式:朱丽华,吴小芹,戴培培,等. 赤松离体培养植株再生体系的建立[J]. 南京林业大学学报:自然科学版,2010,34(2):11-14.

In vitro plantlet regeneration from seedling explants of Pinus densiflora

ZHU Lihua1,2, WU Xiaoqin1,2*, DAI Peipei1,2, ZHANG Hongyan1,2   

  1. 1.College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; 2.Jiangsu Key Laboratory for Prevention and Management of Invasive Specie, Nanjing 210037, China
  • Online:2010-05-14 Published:2010-05-14

摘要: 以无菌条件下萌发21~28 d的赤松(Pinus densiflora)幼苗子叶-胚轴材料为起始外植体建立了植株再生体系。结果表明:在添加4 mg/L 6-BA和0.05 mg/L NAA的GD培养基上培养5周可诱导丛生芽形成,无6-BA但添加0.1 mg/L NAA的DCR培养基促进了芽的进一步生长,DCR培养基中添加0.5~1.0 g/L活性炭促进了芽的伸长,在添加2 mg/L 6-BA和0.1~0.2 mg/L NAA的GD培养基上丛生芽大量增殖。伸长的丛生芽接种在附加0.2 mg/L NAA的1/2 GD培养基中培养4周后,不定根发生率达68.4%,转移至无激素但添加0.5 g/L活性炭的1/2 GD中不定根迅速伸长。将完整的再生植株移栽于蛭石-珍珠岩-河沙等比混合的基质中,12周后成活率约为60%。

Abstract: A plantlet regeneration protocol was developed for P.densiflora by using Cotyledonhypocotyl explants from 21—28 days old aseptically grown seedlings. The explants were cultured on a GD medium containing 4 mg/L 6BA (6benzylaminopurine) and 0.05 mg/L NAA (αnaphthylacetic acid) for 5 weeks to obtain bud induction. Bud growth was enhanced by the elimination of 6BA and the inclusion of 0.1 mg/L NAA in DCR medium. Shoots elongation was achieved on DCR medium supplemented with 0.5—1.0 g/L activated charcoal (AC). Multiple shoots in subcultures were proliferated on GD medium with 2 mg/L BAP and 0.2 mg/L NAA. Root primordia were induced in 68.4% of shoots after 4 weeks of culture on 1/2 GD medium containing 0.2 mg/L NAA. Roots elongated rapidly after the transmission of rooted plantlets to 1/2 GD medium with 0.5 g/L AC. The rooted plantlets were successfully transferred to cups containing a mixture of vermiculiteperlitesand. The surviving rate was approximate 60% after 12 weeks in the greenhouse.

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