Micropropagation through Callus Culture in Chinese Foxglove (Rehmannia glutinosa)

지황의 캘러스 배양에 의한 기내 대량증식

  • Published : 1998.05.01

Abstract

Chinese foxglove (Rehmannia glutinosa) is receiving much attention as one of the principal medicinal crops and the crude drug damand expands rapidly.This study was conducted to obtain the basic breeding information of Chinese foxglove. Effects of supplemental plant growth regulators were investigated on leaf tissue for proliferation. 100% callus formation, 31% plantlet regeneration and 6% root differentiation were obtained by adding 0.5 mg/L NAA and 2.0 mg/L BA. 2,4-D and Zeatin treatment also resulted in 95% increase in callus formation, but shoot was not formed. During the subculture, callus propagation rate recorded 15.4% with 0.2 mg/L NAA and 1.0 mg/L BA and plant regeneration improved on MS medium supplemented with 0.2 mg/L NAA and 0.5 mg/L kinetin. The number of shoot formed ranged from 1.7 on WPM medium to 3.4 on MS medium with 0.1 mg/L NAA and 0.5 mg/L BA. Supplementation of 1.0 g/L activated charcoal improved the In vitro plant growth.

지황(Rehmannia glutinosa)의 캘러스배양을 통한 기내 대량증식을 위하여 엽조직으로부터 캘러스 형성에 미치는 생장조절물질의 영향을 조사한 결과 MS배지에 0.5 mg/L NAA와 2.0 mg/L BA 첨가배지에서 캘러스 형성율 100%, 식물체 분화율 31%로 가장 높았으며, 2.4-D와 zeatin 첨가배지에서는 캘러스 형성율은 95% 이상 높았으나 기관분화가 전혀 이루어지지 않았다. 재분화 식물체로부터 다수의 신초 유기에 적합한 배지로는 MS배지에 0.2mg/L NAA와 0.5 mg/L BA를 첨가한 배지에서 3.4개와 2.8개로 양호하였다. 다수의 신초 증식을 위하여 1.0 g/L활성탄을 첨가한 배지에서 가장 많은 3.8개의 신초가 분화되었으나 2.0 g/L 첨가배지에서는 2.4개로 감소된 반면, 초장과 엽수는 증가하여 개체생육은 양호함을 알 수 있었다.

Keywords

References

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