Micropropagation of Achyranthes japonica Through Axillary Buds Culture

액아배양을 통한 쇠무릎(Achyranthes japonica)의 대량증식

  • Kim ,Kwang-Soo (Department of Biology & Hormone Research Center, Chonnam National University) ;
  • Sung, Nak-Sool (National Crop Experiment Station) ;
  • Kim, Myung-Won (Department of Biology, Yonsei University) ;
  • Pyo, Byung-Sik (Department of Food and Biotechnology, Dongsin University) ;
  • Hwang, Baik (Department of Biology & Hormone Research Center, Chonnam National University)
  • 김광수 (전남대학교 자연과학대학 생물학과 호르몬연구센터) ;
  • 성낙술 (농촌진흥청 작물시험장 특용작물과) ;
  • 김명원 (연세대학교 자연과학대학 생물학과) ;
  • 표병식 (동신대학교 식품생물공학과) ;
  • 황백 (전남대학교 자연과학대학 생물학과 호르몬연구센터)
  • Published : 1997.11.01

Abstract

Multiple shoot formation was obtained from excised axillary buds of Achyranthes japonica NAKAI cultured on MS media containing various growth regulators such as auxin and cytokinin. The highest average number of shoots was obtained in 1 mg/L NAA and 2 mg/L BA after 6 weeks (25.8 adventitious shoots per node). Although the regeneration rate was less than the former condition, optimal combination for the production of more shoots with a suitable size was 0.5 mg/L NAA and 1 mg/L BA (19.7 adventitious shoots per node). Roots were induced from regenerated shoots after 3 weeks culture, transferred to 1/2 MS medium supplemented with 0.1 mg/L IBA. Micropropagated plants were successfully transferred to soil.

쇠무릎(A. japonica) 다량증식 방법의 일환으로 액아를 이용한 multiple shoot유도를 위한 최적 조건을 조사하였다. 기내에서 증식하고 있는 식물체로부터 액아를 적출하여 NAA, 2,4-D 및 BA가 여러 농도로. 첨가된 MS 배지(3% sucrose, 0.2% gelrite)에서 6주 간 배양한 결과, shoot의 발생은 1mg/L NAA와 2mg/L BA가 첨가된 처리구에서 액아 당 평균 25.8개로 가장 많았다. 신초의 발생 빈도는 조금 낮지만 발생된 신초가 완전한 식물체로 되기 위한 크기를 고려할 때의 조합은 0.5 mg/L NAA와 1 mg/L BA가 첨가된 처리구에서 액아 당 19.7개의 신초가 발생하여 가장 좋은 결과를 얻었다. 한편 발생된 신초는 절취하여 0.1mg/L IBA가 첨가된 1/2 MS 배지에서 배양했을 때 뿌리의 발생과 신장이 가장 양호하였으며, 식물체의 생육도 왕성하였다. 발근된 식물체를 기외로 이식 후 활착시켜 쇠무릎의 액아 배양을 통한 다량증식의 가능성을 확인하였다.

Keywords

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