Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Effects of Fluorescent Light and Light-Emitting Diodes on Leaf Morphology, Growth and Antioxidant Capacity of Salvia plebeia

형광등과 발광다이오드 광원이 '곰보배추'의 생육, 엽형 및 항산화능에 미치는 영향

  • Park, Heon (Department of Green Technology Convergence, College of Science Technology, KonKuk University) ;
  • Yu, Yeon Jung (Department of Agriculture, Korea National Open University) ;
  • Choi, Eun Young (Department of Agriculture, Korea National Open University)
  • 박헌 (건국대학교 녹색기술융합학과) ;
  • 유연정 (한국방송통신대학교 농학과) ;
  • 최은영 (한국방송통신대학교 농학과)
  • Received : 2017.05.29
  • Accepted : 2017.07.26
  • Published : 2017.07.31
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Abstract

This study aimed to determinate the effect of fluorescent light and light-emitting diodes on the leaf morphology, growth and antioxidant capacity of Salvia plebeia. The plants were grown for 56 days after transplanting (DAT) under the fluorescent light (FL) and LEDs (White, Red and Blue (R+B, ratio 2:1), Blue, Red LED) under the same light intensity and photoperiod ($130{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$, 12 hours). Leaf length, width and number of Salvia plebeia at the 56 DAT were significantly higher under the FL and red LED, and lower in the RB LED and white LED. The highest fresh and dry weights of shoot and leaf area were observed in the red LED, followed by the FL and blue LED, and the lowest in the RB LED and white LED. After 21 DAT, leaf apinasty symptom was appeared in plants grown under red LED and RB LED. The chlorophyll content was lower in the red LED. The specific leaf weight, the ratio of leaf dry weight to area, was higher in the blue LED, and lowest in the FL. No significant difference in DPPH radical scavenging activity of Salvia plebeia under the different light sources. All the integrated results suggest that the FL light is a proper light conditions for a closed cultivation of Salvia plebeia.

본 연구에서는 인공광 광질에 따른 곰보배추의 생육, 엽형 및 항산화능을 비교하였다. 정식 후 56일째에 측정된 엽장, 엽폭 및 엽수는 적색 LED(R)와 대조구인 형광등(FL) 처리구에서 유의적으로 높았고 혼합광(RB2:1)과 백색 LED(W) 처리구에서 낮았다. 엽형지수(엽장/엽폭)도 적색 LED(R)와 대조구인 형광등(FL) 처리구에서 유의적으로 높았고 혼합광(RB2:1)과 백색 LED(W) 처리구에서 낮았다. 지상부 생체중, 건물중 및 엽면적 모두 적색 LED(R) 처리구에서 가장 높았고 형광등(FL)과 청색 LED(B) 처리구가 그 다음으로 높게 나타났으며 혼합광(RB2:1)과 백색 LED(W) 처리구에서 낮았다. 잎의 수하현상은 정식 21일 이후부터 적색 LED(R)와 혼합광(RB2:1) 처리구에서만 발생하였다. 엽록소 함량은 적색 LED(R) 처리구에서 가장 낮았다. 비엽중은 청색 LED(B) 처리구에서 가장 높았고 형광등(FL) 처리구에서 가장 낮았다. DPPH free radical 소거활성은 처리 간 유의차가 없었다. 위의 결과들을 종합하여 볼 때 형광등이 곰보배추를 실내에서 인공으로 재배 시 적합한 광원으로 판단된다.

Keywords

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