Korean Journal of Plant Tissue Culture (식물조직배양학회지)

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Micropropagation of Lillium Oriental Hybrid 'Casa Blanca' using Bulblet Sections with swollen Basal Plate in Bioreactor

생물반응기에서 저반부가 비대된 자구 절편체에 의한 오리엔탈 나리 'Casa Blanca' 의 대량증식

  • Published : 2001.05.01
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Abstract

A series of studies were carried out to establish micropropagation system, using airlift bioreactors (ebb $\varepsilon$ flood type, 5 L), of Lilium oriental hybrid 'Casa Blanca'. The bulblets with swollen basal plate were formed from bulb scales, then proliferated to bulblet clusters with swollen basal plate. Finally normal bulblets were formed from the sections. Bulblet formation and proliferation with swollen basal plate were not accomplished entirely in liquid culture of 5 L airlift bioreactors, but leafy bulb scales grew vigorously. Bulblet clusters with swollen basal plate were proliferated by periodic immersion culture. Bulblet proliferation was not affected by light, but scale leaves grew under light. MS medium containing 2.0 mg/L benzyl adenine (BA) and 0.3 mg/L indole acetic acid (IAA) was favorable to the bulblet proliferation with swollen basal plate. In liquid culture of 5 L bioreactors, bulblets from bulblet sections with swollen basal plate grew vigorously on MS medium with 70 g/L sucrose. It was effective for bulblet growth to replace the new medium after 8 weeks in culture during 16 weeks of cultural period. 15 g injection of bulblet sections as a cultural material was suitable for bulblet growth in 5 L bioreactors.

본 연구는 오리엔탈 나리 'Casa Blanca' 의 기내인편에서 저반부가 비대된 자구를 형성하고, 형성된 자구절편을 배양하여 저반부가 비대된 자구의 증식 및 자구를 비대시키는, 5 L의 생물반응기를 이용한 일련의 대량생산 체계를 확립하기 위하여 실시하였다. 5 L airlift 생물반응기를 이용한 액체배양에서는 저반부가 비대된 자구의 형성 및 증식은 전혀 이루어 지지 않았으며, 인편엽만 무성하게 자랐다. 재료가 배지에 일시적으로 침지되는 ebb & flood형의 생물반응기에서 저반부가 비대된 자구 절편체를 배양한 결과, 저반부가 비대된 자구들이 증식하였다. 광은 자구의 증식에 영향을 미치지 않았으나, 명배양에서는 인편엽의 발생률이 높았으며, 저반부가 비대된 자구 증식은 MS 배지에 BA 2.0 mg/L와 IAA 0.3 mg/L가 첨가된 배지에서 양호하였다. 5L airlift 생물반응기에서 저반부가 비대된 자구 절편체로부터 자구비대는 MS 배지에 sucrose 70 g/L가 첨가된 배지에서 액체배양하는 것이 양호하였으며, 16주 배양기간 동안 배양 8주 후에 배지를 교체하는 것이 자구비대에 효과적이었다. 또한 5 L의 생물반응기에 3 L 액체배지에는 절편체를 15 g을 주입하는 것이 자구비대에 적절하였다.

Keywords

References

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