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中国农学通报 ›› 2025, Vol. 41 ›› Issue (13): 65-70.doi: 10.11924/j.issn.1000-6850.casb2024-0569

• 林学·园艺·园林 • 上一篇    下一篇

铁皮石斛‘明斛5号’一步成苗技术研究

江金兰()   

  1. 三明市农业科学研究院/福建省山区作物遗传改良与创新利用重点实验室,福建三明 365051
  • 收稿日期:2024-09-09 修回日期:2025-02-20 出版日期:2025-05-05 发布日期:2025-05-07
  • 作者简介:

    江金兰,女,1973年出生,福建泰宁人,高级农艺师,大学本科,研究方向为兰科药用植物育种及生物技术。通信地址:365051 福建省三明市沙县区虬江街道柱源村2号 三明市农业科学研究院,Tel:0598-5861110,E-mail:

  • 基金资助:
    福建省星火项目“优质铁皮石斛新品种‘明斛5号’种苗繁育与高效栽培技术示范”(2023S0018)

Study on One-Step Seedling Technology of Dendrobium officinale Variety ‘Minghu No.5’

JIANG Jinlan()   

  1. Sanming Academy of Agricultural Sciences/ Fujian Key Laboratory of Crop Genetic Improvement and Innovative Utilization for Mountain Area, Sanming, Fujian 365051
  • Received:2024-09-09 Revised:2025-02-20 Published:2025-05-05 Online:2025-05-07

摘要: 为简化铁皮石斛新品种‘明斛5号’工厂化育苗程序、缩短育苗时间,以茎段为外植体,采用L9(34)正交试验,探讨激素(6-BA、NAA)、添加物(香蕉泥、活性炭)对铁皮石斛‘明斛5号’一步成苗的影响。结果表明,适合‘明斛5号’一步成苗的培养基为1/2MS+ 6-BA 3 mg/L+ NAA 0.5 mg/L+香蕉泥50 g/L+活性炭1 g/L,接种120 d后,芽增殖系数达2.85,苗平均株高9.00 cm,茎粗6.10 mm,叶长4.50 cm,叶宽1.07 cm,叶数5.33片,根数6.00条,根长6.70 cm,单株重0.78 g。极差分析结果表明,4个因素对‘明斛5号’一步成苗影响的主次关系为6-BA>NAA>活性炭>香蕉泥。主体间效应检验表明,4个因素对一步成苗生长速度、茎段增殖系数、萌芽率和芽增殖系数的影响均达极显著水平(P<0.01),6-BA是一步成苗芽增殖系数的主要影响因子,NAA是一步成苗生长速度、茎段增殖系数、萌芽率的主要影响因子。本研究可为铁皮石斛及其他石斛新品种工厂化育苗提供技术参考。

关键词: 铁皮石斛, ‘明斛5号’, 茎段培养, 一步成苗, 正交设计, 6-苄氨基嘌呤, 萘乙酸

Abstract:

The paper aims to simplify the factory seedling rearing procedure of a new variety of Dendrobium officinale ‘Minghu No.5’ and shorten the seedling rearing time. Using stem segment as explants, L9(34) orthogonal test was used to research the effects of hormones (6-BA, NAA), additives (banana puree, activated carbon AC) on the one-step seedling growth of D. officinale ‘Minghu No.5’. The results showed that the medium suitable for the one-step seedling growth of D. officinale ‘Minghu No.5’ was 1/2MS+ 6-BA 3 mg/L+ NAA 0.5 mg/L+ banana puree 50 g/L+ AC 1 g/L, after 120 days of inoculation, the proliferation coefficient of buds reached 2.85, and the average plant height of seedlings was 9.00 cm, stem diameter was 6.10 mm, leaf length was 4.50 cm, leaf width was 1.07 cm, leaf number was 5.33, root number was 6.00, root length was 6.70 cm, individual plant weight was 0.78 g. The range analysis results showed that the primary and secondary relationship of the four factors on the proliferation of ‘Minghu No.5’ was 6-BA> NAA> AC> banana puree. The inter-subject effect test showed that the four factors had extremely significant effects on the growth rate, stem segment proliferation coefficient, germination rate and bud proliferation coefficient of one-step seedlings (P<0.01). 6-BA was the main factor affecting the growth rate of one-step seedlings, and NAA was the main factor affecting the growth rate of one-step seedlings, stem proliferation coefficient and bud proliferation rate. This study could provide technical reference for factory seedling cultivation of D. officinale and other new varieties.

Key words: Dendrobium officinale, ‘Minghu No.5’, stem culture, one-step seedling, orthogonal design, 6-BA, NAA