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海南三七的组织培养和快速繁殖

Tissue Culture and Rapid Propagation of Kaempferia rotunda L.

  • 摘要: 以海南三七的芽和假茎基部为试材,采用组织培养的方法,研究了不同激素浓度的培养基对芽增殖以及愈伤组织的诱导、增殖和分化的影响,以期为直接和间接植株组培快繁体系的建立提供参考依据。结果表明:在“以芽繁芽”的直接再生体系中,芽增殖最佳培养基为MS+6-BA 2.0 mg·L-1+NAA 0.1 mg·L-1。在以愈伤组织诱导与植株再生的间接再生体系中,假茎基部作为外植体接种在MS+6-BA 2.0 mg·L-1+2,4-D 1.0 mg·L-1的愈伤诱导培养基上愈伤诱导率最高,40 d后可达78.43%;愈伤增殖最适培养基为MS+6-BA 1.0 mg·L-1+2,4-D 2.0 mg·L-1,愈伤分化的最佳培养基为MS+6-BA 4.0 mg·L-1+NAA 0.6 mg·L-1,分化率可以达到66.67%;将组培苗移栽至基质中,成活率90%以上。海南三七直接和间接快繁体系的建立,为其工厂化生产、遗传育种及特定药用成分生物反应器的搭建奠定了基础。

     

    Abstract: The bud and basal part of the pseudostem of Kaempferia rotunda L.were used as materials.The effects of mediums with different hormone concentrations on bud proliferation, callus induction, proliferation and differentiation were studied by tissue culture, in order to provide reference for the establishment of a direct and indirect rapid propagation system for K.rotunda L..The results showed that the optimum medium for rapid proliferation was MS+6-BA 2.0 mg·L-1+NAA 0.1 mg·L-1 which had large proliferation coefficient and strong buds.In the indirect plant propagation system, the best medium for callus induction was MS+6-BA 2.0 mg·L-1+2,4-D 1.0 mg·L-1.Callus induction rate was up to 78.43% after induced from basal part of pseudostem for 40 days.MS+6-BA 1.0 mg·L-1+2,4-D 2.0 mg·L-1 produced the highest callus proliferation rate.The most suitable callus differentiation was MS+6-BA 4.0 mg·L-1+NAA 0.6 mg·L-1,with the differentiation rate being the highest(66.67%).The tissue cultured plants were transferred onto humus after hardening-seedling, and the survival rate was higher than 90%.Direct and indirect rapid propagation system of seedling for tissue culture of Kaempferia rotunda L.was established, which provide the technical support for factory seedling, genetic breeding and specific medicinal ingredient bioreactors.

     

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