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植物研究 ›› 2025, Vol. 45 ›› Issue (4): 558-568.doi: 10.7525/j.issn.1673-5102.2025.04.008

• 研究论文 • 上一篇    下一篇

濒危植物岩生鼠尾草的组培快繁技术

王莹莹1, 余登利2, 邱风进1, 晏融融1, 胡国雄1()   

  1. 1.贵州大学生命科学学院/农业生物工程研究院,山地植物资源保护与种质创新教育部重点实验室,贵阳 550025
    2.茂兰国家级自然保护区管理局,荔波 558400
  • 收稿日期:2024-12-13 出版日期:2025-07-20 发布日期:2025-07-25
  • 通讯作者: 胡国雄 E-mail:gxhu@gzu.edu.cn
  • 作者简介:王莹莹(1998—),女,硕士,主要从事植物组织培养研究。
  • 基金资助:
    国家自然科学基金地区科学基金项目(32060048);贵州省科技计划项目(黔科合中引地[2023]029)

Tissue Culture and Rapid Propagation of Endangered Salvia petrophila

Yingying WANG1, Dengli YU2, Fengjin QIU1, Rongrong YAN1, Guoxiong HU1()   

  1. 1.Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education),College of Life Sciences/Institute of Agro-bioengineering,Guizhou University,Guiyang 550025
    2.Management Department of Maolan National Nature Reserve,Libo 558400
  • Received:2024-12-13 Online:2025-07-20 Published:2025-07-25
  • Contact: Guoxiong HU E-mail:gxhu@gzu.edu.cn

摘要:

为建立濒危植物岩生鼠尾草(Salvia petrophila)的组培快繁体系,对岩生鼠尾草成熟种子消毒及萌发、基部带腋芽茎段继代增殖、无菌苗茎段愈伤组织诱导及分化、不定芽生根、炼苗移栽进行研究。结果表明:(1)岩生鼠尾草种子的适宜消毒方法为75%乙醇溶液处理30 s,5%次氯酸钠(NaClO)溶液消毒8 min,种子发芽率为40.83%。(2)种子萌发适宜培养基为MS+1.0 mg·L-1 6-BA+0.1 mg·L-1 NAA,发芽率为71.12%。(3)基部带腋芽茎段继代增殖适宜培养基为MS+1.0 mg·L-1 6-BA+0.1 mg·L-1 NAA,增殖系数为5.5。(4)无菌苗茎段愈伤组织诱导适宜培养基为MS+1.0 mg·L-1 6-BA+1.0 mg·L-1 2,4-D,诱导率高达97.10%;愈伤组织适宜分化培养基为MS+1.5 mg·L-1 6-BA+0.1 mg·L-1 NAA。(5)岩生鼠尾草不定芽生根适宜培养基为1/2MS+1.0 mg·L-1 NAA,生根系数高达99.11%。(6)泥炭土、珍珠岩和蛭石体积比为1∶1∶1的混合基质为适宜栽培基质,移栽成活率高达85.5%。研究结果可为岩生鼠尾草的保护和利用奠定技术基础,同时也可为鼠尾草属其他植物的繁殖技术提供新的研究思路。

关键词: 岩生鼠尾草, 濒危植物, 组织培养, 快速繁殖

Abstract:

To establish the rapid propagation system of tissue culture of an endangered plant Salvia petrophila, the disinfectant concentration and duration in the sterilization process, as well as the regulation of hormone types and concentrations on seed germination, the subculture and preliferation of stem segments with axillary buds at the base, induction and differentiation of callus from stem segments, rooting, hardening off and transplanting were investigated respectively. The results showed that (1) the appropriate sterilization method for S. petrophila seeds was 75% alcohol treatment for 30 s, followed by 5% sodium hypochlorite solution for 8 min, achieving a germination rate of 40.83%. (2) The appropriate medium for seed germination was MS supplemented with 1.0 mg·L-1 6-BA and 0.1 mg·L-1 NAA, resulting in a germination rate of 71.12%. (3) For subculture proliferation, the appropriate medium was MS with 1.0 mg·L-1 6-BA and 0.1 mg·L-1 NAA, yielding a proliferation coefficient of 5.5. (4) For stem segments, the appropriate callus induction medium was MS+1.0 mg·L-1 6-BA+1.0 mg·L-1 2,4-D, with an induction rate of 97.10%. The appropriate differentiation medium for callus induced from stem segments was MS+1.5 mg·L-1 6-BA+0.1 mg·L-1 NAA. (5) The appropriate basic medium for adventitious bud rooting was 1/2MS with 1.0 mg·L-1 NAA, achieving a rooting coefficient of 99.11%. (6) After hardening off, the rooted seedlings of S. petrophila were transplanted into a mixed substrate of peat, perlite, and vermiculite in a volume ratio of 1∶1∶1, resulting in a survival rate of 85.5%. The results might lay a technical foundation for the species conservation and resource utilization of S. petrophila, and also provided valuable ideas for the rapid propagation techniques of other Salvia species.

Key words: Salvia petrophila, endangered plant, tissue culture, rapid propagation

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