한국산림과학회지 (Journal of Korean Society of Forest Science)

  • 제100권4호
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  • Pages.693-697
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  • 2011
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  • 2586-6613(pISSN)
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  • 2586-6621(eISSN)
한국산림과학회 (Korean Society of Forest Science)
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ABA 및 삼투압제 종류 및 농도에 따른 낙엽송 (Larix kaempferi) 체세포배 유도, 발아 및 식물체 재분화 효과

Effect of Abscisic Acid, Kinds and Concentrations of Osmoticum on Somatic Embryo Induction, Germination and Plantlet Regeneration in Larix kaempferi

  • 김용욱 (국립산림과학원 산림생명공학과)
  • Kim, Yong Wook (Biotechnology Division, Korea Forest Research Institute)
  • 투고 : 2011.08.09
  • 심사 : 2011.09.22
  • 발행 : 2011.12.31
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초록

본 연구는 낙엽송 체세포배 유도, 발아 및 식물체 재분화에 영향하는 배지종류, 엡시식산(abscisic acid, ABA)의 농도, 삼투압제의 종류 및 농도 효과를 조사하기 위해 수행되었다. 체세포배 유도를 위한 배양기간, ABA 및 삼투압제 농도 비교에서 $60{\mu}M$ ABA+0.2 M sucrose에서 4주 배양으로 가장 많은 체세포배(191개/g 조직)가 유도 되었으나, $4{\mu}M$ ABA+0.1 M sucrose에서는 배양 기간에 관계없이 3.5~23.5 개로 아주 저조한 유도 결과를 보였다. 체세포배 발아 비교에서는 $60{\mu}M$ ABA+0.2 M sucrose 처리구에서 5 주간 배양으로 유도된 체세포배가 자엽(90.9%), 하배축(95.8%) 및 뿌리발생율(96.5%)이 가장 높았으나, $4{\mu}M$ ABA+0.1 M sucrose 처리구 유래 체세포배의 발아정도는 매우 저조한 것으로 나타났다. 삼투압제 농도 및 종류에 따른 체세포배 발아 및 식물체 재분화 비교에서는 0.2M sucrose 처리구의 체세포배의 자엽(98.3%), 하배축(78.4%), 뿌리(57.5%) 발생율 및 식물체 재분화율(54.8%)로 가장 높게 나타났다.

This study was conducted to examine effects of concentrations of abscisic acid (ABA) or /kinds of osmotica on induction of somatic embryos (SEs), germination and plantlet regeneration in Japanese larch (Larix kaempferi). In comparison of duration of culture, concentrations of ABA and osmoticum, the highest induction number (191/g tissue) of the SE was showed in $60{\mu}M$ ABA+0.2 M sucrose for 4 weeks culture. However, the lowest number (3.5~23.5) of SEs was induced from $4{\mu}M$ ABA+0.1 M sucrose, regardless of culture duration for SEs induction. In comparison of germination efficiency of SEs, the highest induction frequencies of cotyledon (90.9%), hypocotyl (95.8%) and root (96.5%), respectively, were obtained from the SEs that cultured from the treatment of $60{\mu}M$ ABA+0.2 M sucrose with 5 weeks culture. In contrast, the lowest germination response was showed in SEs that induced from the treatment of $4{\mu}M$ ABA+0.1 M sucrose. In comparison of effect of different kinds/concentrations of osmotica for germination and plantlet regeneration, the best response was obtained from the treatment of 0.2 M sucrose with induction of cotyledon (98.3%), hypocotyl (78.4%), root (57.5%) and plantlet regeneration (54.8%), respectively.

키워드

참고문헌

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