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식물공장에서 양액의 종류 및 PPFD가 배초향의 생장 및 항산화 물질에 미치는 영향

Response of Nutrient Solution and Photosynthetic Photon Flux Density for Growth and Accumulation of Antioxidant in Agastache rugosa under Hydroponic Culture Systems

  • Kim, Sung Jin (Department of Horticultural Science, Chungnam National University) ;
  • Bok, Kwon Jung (Department of Horticultural Science, Chungnam National University) ;
  • Lam, Vu Phong (Department of Horticultural Science, Chungnam National University) ;
  • Park, Jong Seok (Department of Horticultural Science, Chungnam National University)
  • 투고 : 2017.09.05
  • 심사 : 2017.09.22
  • 발행 : 2017.10.31

초록

배초향은 항동맥경화나 항박테리아의 특성을 가지는 한약재에 널리 사용되는 영년생 약용식물이다. 연구의 목적은 수경재배에서 배양액의 종류와 PPFD값에 따른 배초향의 생장 및 항산화 물질의 변화를 조사하는 것이다. 배초향은 주야간 16:8 시간의 일장조건에서 150과 $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD 조건과 일본원시(HES), 서울시립대(UOS), 유럽채소연구소(EVR), 오오츠카 배양액(OTS)을 이용하여 6주간 재배하였다. OTS 배양액조건에서 자란 배초향의 지상부 및 지하부 건물중은 다른 배양액 처리구와 비교하여 유의적으로 높았다. 배초향의 틸리아닌 함량은 OTS 처리에서 가장 높았으며 다음으로 EVR, HES, UOS 순서로 낮아졌다. 총 아카세틴의 함량은 EVR처리에서 가장 높았으나 OTS처리와는 유의적 차이를 보이지 않았다. 또한 $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD 조건에서 자란 배초향은 PPFD 150처리구와 비교하여 유의적으로 생체중과 건물중이 증가하였으며 기능성 물질은 틸리아닌과 아카세틴의 함량도 높았다. 본 연구는 수경재배 방식을 이용하여 식물공장에서 배초향을 재배할 경우 $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD 조건과 OTS 배양액 조건에서 경제적인 광원조건으로 최적 바이오매스 생산량과 틸라아닌과 아카세틴의 함량을 증가시킬 수 있을 것으로 제안한다.

Agastache rugosa, is a perennial medicinal plant commonly used in Chinese herbalism, and may have anti-atherogenic and antibacterial properties. Here in this study, we investigated the growth and variations in antioxidant contents of A. rugosa in response to nutrient solution and photosynthetic photon flux density (PPFD) with artificial lighting for a hydroponics culture. Fluorescent light at 150, and $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD with a 16/8 (light/dark) photoperiod, combined with four different nutrient solutions [developed by Horticulture experiment station in Japan (HES), University of Seoul (UOS), Europe vegetable research center (EVR), Otsuka-house 1A (OTS)], were used in a hydroponics culture system for 6 weeks. The shoot and root dry weights of A. rugosa grown with the OTS were significantly higher than those of other nutrient solutions. The amount of tilianin was the highest grown with the OTS, followed by EVR, HES, and UOS. Total acacetin content was the highest in A. rugosa grown under EVR which was statistically similar with OTS. The A. rugosa grown under $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD produced higher fresh weight and both acacetin and tilianin contents than that grown under $150{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD. The present results suggested that OTS along with $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD could be an optimum growing condition for better growth and higher accumulation of tilianin and acacetin contents in A. rugosa with hydroponic culture systems in a plant factory.

키워드

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