Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Effect of Plant Growth Regulators on in vitro Cultured Atractylodes Hybrid 'Dachul' (A. macrocephala x A. japonica)

기내배양 백출 교잡종 '다출'(Dachul, Atractylodes macrocephala x A. japonica)에 미치는 생장조절제처리효과

  • 고우리 (동국대학교 바이오환경과학과) ;
  • 조준형 (동국대학교 바이오환경과학과) ;
  • 박춘근 (국립원예특작과학원 약용작물과) ;
  • 안영섭 (국립원예특작과학원 약용작물과) ;
  • 박충범 (국립원예특작과학원 약용작물과)
  • Received : 2011.08.29
  • Accepted : 2011.09.19
  • Published : 2011.10.31
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Abstract

This study was conducted to establish the tissue culture system for Atractylodes plant which is most frequently used in oriental medicine. Root and auxiliary bud of Dachul cv., which is Atractylodes hybrid (A. macrocephala x A. japonica), were used as target tissues for in vitro culture. In root culture, callus induction rate was higher in the treatment of BAP combined with NAA than others, however, 2-iP was more effective for callus proliferation and root induction. Although calli were effectively induced from the root and proliferated in lower concentration of cytokinin combined with higher auxin, root tissue was inappropriate for shoot regeneration. For plant regeneration with axillary bud, BAP combined with NAA was more effective than 2-iP with NAA or IBA. Number of regenerated plant per bud was 3.8, which was highest, and stem diameters was shown as 5.0mm under the conditions of 1 mg/L BAP combined with 1 mg/L NAA. Although, plant height was tend to be higher in 2-iP than BAP, number of the regenerated plant was lower via versus. Furthermore, root proliferation of regenerated plant was more effective in higher concentration of sucrose (7%) than in lower concentration (3%). In results, auxiliary bud was an efficient target tissue for producing regenerated plant of Atractylodes under the conditions of 1 mg/L BAP combined with 1 mg/L NAA and higher concentration of sucrose was effective for root proliferation of regenerated plants.

본 연구는 국내에서 소비되는 약용작물 중 경제적 가치가 높은 백출의 조직배양체계 확립을 위해 수행되었다. 공시재료로는 중국백출(A. macrocephala)과 한국자생백출(A. japonica)의 교잡종인 '다출' 품종의 뿌리와 액아를 이용하였다. 뿌리배양을 위해 BAP, 2-iP, IBA, NAA를 혼용 처리한 결과, 캘러스 유도율은 BAP 처리군에서 다소 높았으나, 캘러스 증식 및 뿌리의 유도에는 2-iP 처리가 효과적이었다. 뿌리조직은 낮은 싸이토키닌의 농도와 높은 옥신의 농도에서 캘러스 유도 및 증식이 원활하였으나 식물체 재분화에는 적합하지 않았다. 백출의 액아배양 시 BAP와 NAA의 혼용처리가 2-iP와 NAA 혹은 IBA 처리보다 재분화식물체 생산에 효과적이었다. 1.0 mg/L BAP와 1.0 mg/L NAA 조건에서 액아 당 신초 출현 수가 3.8개로 가장 많았고, 경직경이 5.0 mm 이상으로 양호하였다. 그러나 BAP를 2-iP로 대치하는 경우 재분화 식물체의 초장은 큰 경향을 보이나 액아 당 재분화 식물체의 수가 적은 것으로 조사되었다. 또한 Sucrose 농도를 70 g/L로 하는 경우 액아로부터 재분화한 식물체의 뿌리 비대에 효과적이었다. 본 실험 결과, 백출의 기내 대량증식을 위한 조직으로는 뿌리보다 액아조직이 효율적이며, 식물의 재분화에는 1.0 mg/L BAP와 1.0 mg/L NAA 적합하고, 고농도의 sucrose가 뿌리 비대에 유용한 것으로 사료된다.

Keywords

References

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