Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Effect of Controlled Light Environment on the Growth and Ginsenoside Content of Panax ginseng C. A. Meyer

광환경 조절이 인삼의 생육과 진세노사이드 함량에 미치는 영향

  • Jang, In Bae (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Yu, Jin (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Kweon, Ki Bum (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Suh, Su Jeoung (Department of Herbal Crop Research, NIHHS, RDA)
  • 장인배 (국립원예특작과학원 인삼특작부 인삼과) ;
  • 유진 (국립원예특작과학원 인삼특작부 인삼과) ;
  • 권기범 (국립원예특작과학원 인삼특작부 인삼과) ;
  • 서수정 (국립원예특작과학원 인삼특작부 인삼과)
  • Received : 2016.04.25
  • Accepted : 2016.08.01
  • Published : 2016.08.30
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Abstract

Background: The photosynthetic efficiency cool-season, semi-shade ginseng is normal at low morning temperatures, but drops at high afternoon temperatures. Therefore, optimal plant performance would be ensured if it were possible to control daily light transmission rates (LTR). Methods and Results: Plants were grown in a controlled light environment that replicated 11 AM conditions and comparatively analyzed against plant grown under normal conditions. Growth in the controlled light environment resulted in a 2.81 fold increase in photosynthetic efficiency with no change in chlorophyll content, although LTR were high due to low morning temperatures. Increased aerial plant growth was observed in the ginseng plants adapted to the controlled light environment, which in turn influenced root weight. An 81% increase in fresh root weight (33.3 g per plant on average) was observed in 4-year-old ginseng plants grown in controlled light environment compared to the plants grown following conventional practices (18.4 g per plant on average). With regard to the inorganic composition of leaves of 4-year-old ginseng plants grown in controlled light environment, an increased in Fe content was observed, while Mn and Zn content decreased, and total ginsenoside content of roots increased 2.37 fold. Conclusions: Growth of ginseng under a favorable light environment, such as the condition which exist naturally at 11 AM and are suitable for the plant's photosynthetic activity creates the possibility of large scale production, excellent-quality ginseng.

Keywords

References

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