Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지

Morphological and Physiological Characteristics of Acclimated Liriodendron tulipifera Tree Produced by Several Types of In Vitro Germination Culture

백합나무 체세포배 기내발아 방식에 따른 순화묘의 형태적 및 생리적 특성

  • An, Chan Hoon (Department of Forest Resources, Graduate School, Kangwon National University) ;
  • Yi, Jae Seon (College of Forest and Environmental Sciences, Kangwon National University) ;
  • Moon, Heung Kyu (Division of Forest Biotechnology, Korea Forest Research Institute) ;
  • Kim, Yong Wook (Division of Forest Biotechnology, Korea Forest Research Institute)
  • 안찬훈 (강원대학교 대학원 산림자원학과) ;
  • 이재선 (강원대학교 산림환경과학대학) ;
  • 문흥규 (국립산림과학원 산림생명공학과) ;
  • 김용욱 (국립산림과학원 산림생명공학과)
  • Published : 2012.03.31
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Abstract

The acclimatization of in vitro propagated plants is an important step to produce vigorous plants for clonal forestry and in vitro micro-environment may affect the growth in ex vitro condition. To monitor in vitro environmental effects on the growth in ex vitro condition, several culture systems such semi-solid medium(SS), temporary immersion bioreactor(TIB) and continuous immersion bioreactor(CIB) culture types were tested to compare for the growth of acclimated plants of Liriodendron tulipifera. Results suggested that morphological characters, stomatal conductance, evapotranspiration and chlorophyll contents of acclimated plants were affected by the different of in vitro culture conditions. CIB type of culture was resulted to the lowest value in the biomass of acclimated plants. Net photosynthsis rate of CIB was the same level as those of SS and TIB. However, stomatal conductance, evapotranspiration and $CO_2$ partial pressure in the intercellular air space were lower than those of SS and TIB. The amounts of chlorophyll a, b and carotenoids were also lower than those of the other two culture systems. TIB, showing a little lower or higher value than SS in many growth character, is recommended rather than CIB to produce healthy yellow poplar plants in ex situ condition.

기내배양된 식물체의 순화는 클론임업을 위한 건전한 식물체 생산에 중요하며 기내의 미세환경이 차후 기외생장에 영향을 미친다. 기외생장에 미치는 기내 환경조건을 모니터링하기 위하여 백합나무 어뢰형 체세포배를 재료로 반고체배지(SS), 순간침지 생물반응기(TIB), 연속침지 생물반응기(CIB)에서 배양시키고 식물체를 재생하여 배양 방식에 따른 순화 식물체의 생장을 비교하였다. 결론적으로 기내배양 조건에 따라 차 후 순화 식물체의 형태적 특성, 기공전도도, 증산율 및 엽록소 함량에 영향을 받는 것으로 나타났다. CIB에서 배양된 식물체는 순화식물에서 바이오매스 생장이 가장 낮은 것으로 나타났다. CIB 배양 식물체의 순광합성율은 SS와 TIB 배양 식물체와 같은 것으로 나타났다. 그러나, 기공전도도, 증산율, 세포간 air space에서의 이산화탄소 부분압은 SS와 TIB 배양 식물체보다 낮은 것으로 나타났다. 결론적으로, TIB의 배양체는 여러 가지 생장특성에서 SS 배양체 보다 높거나 다소 낮은 값을 보여 SS, CIB 배양체보다 건전한 식물체 생산이 가능한 것으로 나타났다.

Keywords

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