Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Factors Affecting In Vitro Minimal Growth Conservation of Sedum sarmentosum

돌나물의 기내 활성보존에 영향하는 요인

  • Lee, Seung Yeob (Institute of Life Science and Natural Resources, Wonkwang University) ;
  • Kwon, Tae Oh (Institute of Life Science and Natural Resources, Wonkwang University)
  • 이승엽 (원광대학교 생명자원과학연구소) ;
  • 권태오 (원광대학교 생명자원과학연구소)
  • Received : 2013.05.09
  • Accepted : 2013.08.27
  • Published : 2013.09.30
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Abstract

For in vitro minimal-growth conservation of S. sarmentosum, the in vitro shoots with 10 mm length were cultured on Murashige and Skoog's media (MS) containing different levels of agar (0.8, 1.2, 1.6, 2%), Gelrite (0.4, 0.6, 0.8, 1%), ABA (0, 5, 10, $20mg{\cdot}L^{-1}$), and sucrose (2, 3, 6, and 9%) without subculture at $4^{\circ}C$ and $25^{\circ}C$. All media were supplemented with $0.2mg{\cdot}L^{-1}$ BA, agar and Gelrite media, with 5% sucrose, sucrose media, with 1.2% agar, and ABA media, with 5% sucrose and 1.2% agar, respectively. In vitro minimal-growth conservation in room-temperature ($25^{\circ}C$) was effective in the media containing with $10mg{\cdot}L^{-1}$ ABA or 1.6% agar, and the healthy plantlets could be preserved for 10 months without subculture. After 12 months at $4^{\circ}C$, survival rate was 100% in all media. The in vitro minimal-growth conservation in low temperature ($4^{\circ}C$) was effective in the media containing with $10mg{\cdot}L^{-1}$ ABA or 6% sucrose, and the healthy plantlets could be preserved over 18 months without subculture. Especially, long-term conservation using minimal growth of S. sarmentosum was much more efficient in the medium containing high level sucrose at $4^{\circ}C$ compared to others.

돌나물 유전자원의 기내 활성보존을 위하여, 10mm 크기의 기내배양 shoot를 agar, Gelrite, ABA 및 sucrose 농도를 달리한 MS 배지에 치상하여, $4^{\circ}C$와 $25^{\circ}C$에서 계대배양 없이 보존하였다. 배지는 $0.2mg{\cdot}L^{-1}$ BA를 기본으로 첨가하였고, agar와 Gelrite 배지에는 5% sucrose, ABA 배지에는 5% sucrose와 1.2% agar, sucrose 배지에는 1.2% agar를 각각 첨가하였다. 상온 활성보존($25^{\circ}C$)에서 sucrose와 Gelrite 배지는 생장억제 효과가 거의 없었고, $0.2mg{\cdot}L^{-1}$ BA + $10mg{\cdot}L^{-1}$ ABA + 1.2% agar, 또는 $0.2mg{\cdot}L^{-1}$ BA + 1.6% agar를 첨가한 배지가 효과적이었으며, 계대배양 없이 10개월까지 활성보존이 가능하였다. 저온 활성보존($4^{\circ}C$)에서 12개월후 생존율은 모든 배지에서 100%였으며, $10mg{\cdot}L^{-1}$ ABA, 또는 6% sucrose 첨가배지에서 계대배양 없이 18개월 이상의 활성보존이 가능하였다. 특히 고농도 sucrose 배지는 저온 활성보존($4^{\circ}C$)에서 돌나물 유전자원의 장기간 활성유지에 가장 효과적이었다.

Keywords

References

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