南京林业大学学报(自然科学版) ›› 2021, Vol. 45 ›› Issue (2): 220-224.doi: 10.12302/j.issn.1000-2006.202009049

• 研究论文 • 上一篇    下一篇

元宝枫组织培养及快速繁殖技术研究

马秋月1(), 李倩中1, 李淑顺1, 朱璐1, 颜坤元1, 李淑娴2, 张斌2, 闻婧1,*()   

  1. 1.江苏省农业科学院休闲农业研究所,江苏 南京 210014
    2.南京林业大学, 南方现代林业协同创新中心,江苏 南京 210037
  • 收稿日期:2020-09-22 接受日期:2020-11-22 出版日期:2021-03-30 发布日期:2021-04-09
  • 通讯作者: 闻婧
  • 基金资助:
    国家自然科学基金项目(32001357);江苏省农业科技自主创新项目(CX203155)

Study on tissue culture and rapid propagation of Acer truncatum Bunge

MA Qiuyue1(), LI Qianzhong1, LI Shushun1, ZHU Lu1, YAN Kunyuan1, LI Shuxian2, ZHANG Bin2, WEN Jing1,*()   

  1. 1. Institute of Leisure Agriculture, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
    2. Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
  • Received:2020-09-22 Accepted:2020-11-22 Online:2021-03-30 Published:2021-04-09
  • Contact: WEN Jing

摘要:

【目的】通过对元宝枫外植体灭菌方法和培养基配方的筛选,建立元宝枫快速繁殖体系,为开展元宝枫优良种苗繁育推广研究奠定基础,并为元宝枫后期优良种苗的规模化生产提供理论与技术支撑。【方法】以元宝枫带芽茎段为外植体,研究不同消毒剂处理方法、不同基本培养基类型(1/2 MS、MS、1/2 NN69、NN69)以及不同浓度外源生长调节剂(IBA)对腋芽诱导、生根等过程的影响。【结果】元宝枫茎段在体积分数75%乙醇中处理30 s和0.1%HgCl2灭菌180 s时,成活率最高,但外植体不宜在9月前后采集。在NN69培养基中添加0.2 mg/L IBA时,腋芽诱导率最高(97.2%),且用时最短(10~15 d)。在1/2 NN69中添加0.4 mg/L IBA时有利于生根,生根率可达87.8%。【结论】元宝枫带芽茎段适宜的灭菌方法为75%乙醇处理30 s,再以质量分数0.1% HgCl2处理180 s;腋芽诱导的适宜培养基为NN69+IBA(0.2 mg/L);适宜元宝枫茎段生根的培养基为1/2 NN69+IBA(0.4 mg/L)。以泥炭、珍珠岩、蛭石体积比为7:2:1的混合基质为移栽基质时,试管苗移栽成活率可达95.0%。

关键词: 元宝枫, 组织培养, 生根, 快速繁殖

Abstract:

【Objective】To establish a rapid propagation system, disinfection method and optimal medium were screened, which will lay the foundation for research on the breeding of Acer truncatum seeding. 【Method】The effects of different sterilization treatment mehods, basic media (1/2 MS, MS, 1/2 NN69, NN69), and plant hormones (IBA) on axillary buds and rooting were investigated using stems with axillary buds of A. truncatum. 【Result】When the stem with axillary buds was sterilized with 75% (volume fraction) alcohol for 30 s and 0.1% (mass fraction) HgCl2 for 180 s, the survival rate was the highest. The NN69 medium supplemented with 0.2 mg/L IBA showed the highest axillary bud induction rate (97.2%) with the shortest time (10-15 d). The 1/2 NN69 medium supplemented with 0.4 mg/L IBA was suitable for plantlet rooting, with a rooting rate of 87.8%. 【Conclusion】The optimal sterilization method for stem segments of A. truncatum with axillary buds was 75% alcohol for 30 s and 0.1% HgCl2 for 180 s. The optimal medium for axillary bud induction was NN69 with 0.2 mg/L IBA, and the optimal rooting medium was 1/2 NN69 with 0.4 mg/L IBA. The successful cultivation substrate was prepared by mixing peat, humus,and roseite at a volume ratio of 7:2:1, and the survival rate was 95.0% when the plantlets were moved to the nursery. The results of this study can provide a basis for large-scale propagation of A. truncatum.

Key words: Acer truncatum, tissue culture, rooting, rapid propagation

中图分类号: