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장백도라지의 대량 증식을 위한 조직배양 및 순화 조건 확립

Establishment of tissue culture and acclimation of white balloon flower (Platycodon grandiflorum DC. cv. Jangback) for the raising of in vitro propagated seedlings

  • 한은희 (경남과학기술대학교, 생명과학대학, 농학.한약자원학부) ;
  • 손용완 (경남과학기술대학교, 생명과학대학, 농학.한약자원학부) ;
  • 김만배 (경상남도농업기술원) ;
  • 신용욱 (경남과학기술대학교, 생명과학대학, 농학.한약자원학부) ;
  • 조영손 (경남과학기술대학교, 생명과학대학, 농학.한약자원학부) ;
  • 이신우 (경남과학기술대학교, 생명과학대학, 농학.한약자원학부)
  • Han, Eun-Heui (Dept. of Agronomy & Medicinal Plant Resources, College of Life Science, Gyeongnam National University of Science & Technology) ;
  • Son, Yong-Wan (Dept. of Agronomy & Medicinal Plant Resources, College of Life Science, Gyeongnam National University of Science & Technology) ;
  • Kim, Man-Bae (Gyeongsangnam-do Agricultural Research & Extension Services) ;
  • Shin, Yong-Wook (Dept. of Agronomy & Medicinal Plant Resources, College of Life Science, Gyeongnam National University of Science & Technology) ;
  • Cho, Young-Son (Dept. of Agronomy & Medicinal Plant Resources, College of Life Science, Gyeongnam National University of Science & Technology) ;
  • Lee, Shin-Woo (Dept. of Agronomy & Medicinal Plant Resources, College of Life Science, Gyeongnam National University of Science & Technology)
  • 투고 : 2014.08.06
  • 심사 : 2014.09.22
  • 발행 : 2014.09.30

초록

본 연구는 백도라지의 재배 단지화에 필요한 순수 장백도라지의 육묘를 농가에 보급화하기 위한 기초연구로서 장백도라지의 기내 재분화 조건을 확립하고 순화와 이식에 적합한 상토 조건을 구명하고자 하였다. 캘러스 및 신초의 재분화에는 0.5 mg/L NAA와 1.0 mg/L BA를 포함하는 배지에서 가장 효율적이어서 600% 이상의 재분화효율을 보였다. 뿌리의 유기에는 NAA가 IBA보다 효과적이어서 0.5 mg/L NAA를 포함하는 배지에서 평균 16.9일째 발근이 시작되었으며, 75% 이상의 발근율을 보였다. 기내에서 재분화된 식물체의 순화와 이식을 위하여 시중에서 구입한 5종의 상토를 사용하여 조사한 결과 상토 A(토실)이 가장 효과적이어서 8주째의 초장이 12.8 cm로 다른 상토에 비하여 2배 이상 자랐으며, 엽수는 27개, 엽장은 약 4.5 cm로 다른 상토에 비하여 각각 3.5배와 1.5배 이상 증가한 것으로 조사되었다. 이러한 연구 결과는 조직배양으로 대량증식 시킨 백도라지의 육묘를 농가에 보급함으로서 백도라지의 재배단지에 청도라지의 출현을 방지할 수 있다는 가능성을 제시하였다.

The aim of this study was to establish the condition of regeneration for white balloon flower (Platycodon grandiflorum DC. cv. Jangback) and to manage for the raising of seedling with in vitro regenerated plants. It was examined that 0.5 mg/L of NAA and 1.0 mg/L of BA was the best composition for the callus and shoot induction (up to 600%). NAA was better than IBA for the induction of root and it took 16.9 days for the induction of rooting on the MS soild media containing 0.5 mg/L of NAA and the final rooting ratio was up to 75%. Out of 5 different bed soils purchased from local market, "Tosil" was identified to be the best for the acclimation and growth of in vitro regenerated balloon flower. In detail, on 8 weeks after planting of in vitro regenerated plants in pots containing "Tosil" bed soils, the plant hight was increased up to 2-fold (12.8 cm), 3.5-fold (27) for the number of leaf and 1.5-fold (4.5 cm) for the leaf length when compared to the other four bed soils, respectively. Our preliminary results indicate that it is possible to prevent the occurrence of blue balloon flower in the massive cultivated area of white balloon flower by providing the seedlings raised from in vitro regenerated plants.

키워드

참고문헌

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피인용 문헌

  1. Morphological Characteristics and Genetic Diversity Analysis of Platycodon grandiflorum (Jacq.) A. DC Determined Using SSR Markers vol.24, pp.1, 2016, https://doi.org/10.7783/KJMCS.2016.24.1.55
  2. Plant Regeneration via Adventitious Shoot Formation in Platycodon grandiflorum (Jacq. A. DC.) vol.44, pp.3, 2017, https://doi.org/10.5010/JPB.2017.44.3.330