Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Effects of LED Light Quality on the Growth and Leaf Color of Orostachys japonica and O. boehmeri

LED 광질이 바위솔과 자질연화바위솔의 생장과 엽색에 미치는 영향

  • Lee, Jae Hwan (Department of Environmental Horticulture, Graduate School of Sahmyook University) ;
  • Soh, Soon Yil (Natural Science Research Institute, Sahmyook University) ;
  • Kim, Hyeon Jin (Department of Environmental Horticulture, Graduate School of Sahmyook University) ;
  • Nam, Sang Yong (Department of Environmental Horticulture, Graduate School of Sahmyook University)
  • 이재환 (삼육대학교 대학원 환경원예학과) ;
  • 소순일 (삼육대학교 자연과학연구소) ;
  • 김현진 (삼육대학교 대학원 환경원예학과) ;
  • 남상용 (삼육대학교 대학원 환경원예학과)
  • Received : 2022.02.08
  • Accepted : 2022.04.24
  • Published : 2022.04.30
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Abstract

Plants under the genus Orostachys have been known as medicinal plants. This study deems to determine the growth and leaf color of Orostachys japonica and O. boehmeri when subjected to various LED light sources. A total of seven LED light treatments were used, i.e. red (630 nm), green (520 nm), blue (450 nm), purple (650 and 450 nm), 3000 K white (455, 600 nm), 4100 K white (455, 590 nm), and 6500 K white (450, 545 nm) LEDs. Results showed that O. japonica plants showed favorable growth under 4100 K white LED, while O. boehmeri plants had a positive growth response under white light LEDs (3000, 4100, and 6500 K). In leaf color analysis, the use of green LED showed the greatest change in CIELAB L* and b* values which were relatively higher compared to other treatments indicating that leaves turned yellowish. Further statistical analysis using Pearson's correlation also suggested that there is a small negative association between dry weight and b* values of O. japonica, and a negative moderate association between plant weights (fresh and dry weight) and leaf color (L* and b*) and positive association between said plant weights and a* color values of O. boehmeri. Therefore, it is recommended to cultivate O. japonica under 4100 K white LED and O. boehmeri under 3000, 4100, 6500 K white LEDs.

바위솔속(Orostachys) 식물들은 예로부터 와송이라는 이름의 약용식물로 사용되어 왔다. 본 연구에서는 다양한 LED를 활용하여 바위솔(Orostachys japonica)과 자질연화바위솔(O. boehmeri)의 생장 및 엽색에 관한 분석을 수행하였는데 적색 LED(630nm), 녹색 LED(520nm), 청색 LED(450nm), 식물등 LED(보라색)(650, 450nm), 3000K 백색 LED(전구색)(455, 600nm), 4100K 백색 LED(주백색)(455, 590nm), 6500K 백색 LED(주광색)(450, 545nm)를 활용하여 총7가지 처리구로 나누어 실험하였다. 결과적으로 바위솔은 4100K 백색 LED 처리구에서 가장 우수한 생장 수준을 나타내었으며 자질연화바위솔은 3000, 4100, 6500K의 다양한 백색 LED에 적응이 가능할 것으로 생각된다. 엽색에 관한 분석에서는 바위솔과 자질연화바위솔 모두 녹색 LED 처리구에서 가장 많은 변화를 나타내었는데 L*과 b* 값이 다른 처리구에 비해 상대적으로 높게 나타나 잎이 황화된 것으로 평가되었다. 추가로 생장과 엽색 간의 상관관계를 분석한 결과 바위솔은 식물의 생장과 엽색 간의 상관관계는 거의 없는 것으로 나타났으며 자질연화바위솔은 식물체의 생장과 L*, b* 사이에서 음의 상관관계를 나타내었고 a*와는 양의 상관관계를 나타내었다. 따라서 바위솔은 4100K 백색 LED 하에서 재배할 것을 권장하며 자질연화바위솔은 3000, 4100, 6500K의 백색 LED 하에서 재배할 것을 권장한다.

Keywords

Acknowledgement

본 연구는 삼육대학교 교내연구비 지원과 국립농업과학원 농업유전자원센터 시설관리비 지원에 의해 수행되었음. 연구에 사용된 식물유전자원 바위솔(Orostachys japonica, 유전자원번호 IT317333)은 국립농업과학원 농업유전자원센터로부터 분양받아 활용하였음.

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