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Mass Propagation of Dicentra spectabilis L. Lemaire Through In vitro Suspension Culture

현탁배양을 통한 금낭화(Dicentra spectabilis L. Lemaire)의 대량증식

  • Published : 2004.06.01

Abstract

Bleeding heart (Dicentra spectabilis L. Lemaire) is one of the most valuable wild flower in Korea. This work was conducted for the mass production of somatic embryos through suspension culture and more effective plant regeneration system in Dicentra spectabilis. High-frequency embryogenic callus proliferation was achieved in SH liquid medium supplemented with 1 mg/L 2,4-D. Half-strength SH medium was suitable concentration for somatic embryo induction and germination. About 5,000 embryos were produced per 250$m\ell$ flask after 4 weeks of culture. Germination rate of somatic embryos was decreased when GA$_3$ was added in medium. The plantlets showed a 58% survival rate when transferred to pots after 1 month of culture. The results indicate that micropropagation procedure via somatic embryogenesis can be applied for an efficient mass propagation of Dicentra spectabilis.

금낭화 (Dicentra spectabilis L.)는 개발가치가 있는 국내 자생화 중의 하나로서 우수한 품종의 대량생산이 절실히 요구되는 실정이다. 본 연구는 현탁배양을 통한 배발생세포의 대량증식과 체세포배 발생 및 식물체재생의 적정조건을 구명하여 효율적인 기내묘목의 대량생산 체계를 확립하고자 시도되었다. 1.0mg/L 2,4-D SH고체배지에서 유도된 배발생캘러스를 현탁배지에서 증식시킨 결과, 1.0mg/L 2,4-D를 포함한 SH배지에서 MS배지에 비해 증식율이 높게 나타났으며, 체세포배 발생율은 1/2배 SH기본배지에서 가장 높게 나타났다. 250$m\ell$ 삼각플라스크에서 5,000개 이상의 고빈도로 체세포배가 생산되었다. 체세포배로부터 발아유도시에 GA$_3$는 정상적인 식물체로의 재생을 억제하는 효과를 나타내었으며, 정상적인 식물체 재생은 1/2희석 SH배지에서 양호하였다, 신초와 뿌리를 갖는 유식물체를 모래와 원예용상토(5:1, vol)가 혼합된 토양이 함유된 포트에 이식하여 1개월 후 58%의 생존율을 나타내었다. 이상의 결과를 활용하면 체세포배로부터 금낭화의 묘목을 대량생산 할 수 있을 것으로 생각된다.

Keywords

References

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