Journal of Plant Biotechnology

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Effects of Growth Regulators on Callus Induction and Plant Regeneration from Leaf Explants of Sedum sarmentosum

돌나물 엽절편으로부텨 캘러스 형성 및 식물체 분화에 미치는 생장조절물질의 영향

  • Ahn, Jeong-Ho (Institute of Life Science and Natural Resources, Division of Plant Resources Science) ;
  • Lee, Seung-Yeob (Institute of Life Science and Natural Resources, Division of Plant Resources Science)
  • 안정호 (원광대학교 식물자원과학부 생명자원과학연구소) ;
  • 이승엽 (원광대학교 식물자원과학부 생명자원과학연구소)
  • Published : 2004.03.01
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Abstract

To establish the system of in uitro plant regeneration, the leaf segments of Sedum sarmentosum were cultured on MS media supplemented with different levels of 2,4-D, NAA and BA. The callus induction and growth showed a good response on MS medium supplemented with 3.0mg/L 2,4-D and 1.0mg/L BA, but a few callus induced on medium containing NAA and BA. In plant regeneration, combination of BA and NAA promoted shoot organogenesis from callus, and the highest frequency was obtained on MS medium supplemented with 0.2mg/L NAA and 3.0mg/L BA. When calli were transferred to the plant regeneration medium containing 0.2mg/L NAA and 3.0mg/L BA, healthy shoots without hyperhydricity were continuously induced (17.2 plantlets per callus) after 50 days of culture. When regenerated plantlets were transferred onto hormone-free MS medium, rooting was easily achieved from all of them.

돌나물 (Sedum samentosum)의 기내 식물체 재분화 체계를 확립하기 위하여, 생장조절물질을 다르게 조합한MS배지에 잎절편을 치상한 후,캘러스 유기 및 식물체 분야에 미치는 생장조절물질의 영향을 조사하였다. 캘러스 유기는 3.0mg/L 2,4-D와 1.0mg/L BA첨가 배지에서 가장 높은 캘러스 유기율을 보였으나, NAA와 BA 혼합첨가 배지에서는 캘러스 형성율이 0∼3%이하로 극히 낮았다. 식물체 분화는 NAA 단독첨가 배지에서는 전혀 분화되지 않았으며,0.2mg/L NAA와 3.0mg/L BA첨가배지에서 가장 양호하였다. 캘러스를 식물체 분화배지에 계대배양 후 50일까지는 신초수 증가와 함께 (17.2개/캘러스),식물체의 기형이나 잎비대 현상도 적어 식물체 분화배지로 가장 적합하였다. 분화 식물체는 생장조절물질을 첨가하지 않은 MS기본배지로 계대배양하였을 때 발근 및 생육이 양호하였다.

Keywords

References

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