식물공장에서 적색과 청색 LED의 비율이 물냉이의 생장 및 글루코시놀레이트 함량에 미치는 영향 = Effect of Red and Blue LED Ratio on Growth and Glucosinolate Contents of Watercress (Nasturtium officinale) in a Plant Factory

다국어 초록 (Multilingual Abstract)

Watercress (Nasturtium officinale) is a perennial aquatic plant of the Brassicacea that contains a large amount of glucosinolates, which act as a natural antioxidant in the human body with anticancer activity and an ability to reduce active oxygen that attacks DNA. The aim of this study was to analyze the effects of blue light with red backlight conditions on growth and glucosinolates contents of watercress. Watercress seeds were sown on soil and seedling were grown for 2 weeks. Two weeks after sowing, watercress was transplanted to a hydroponic system with the following light conditions: R10 (Red:Blue = 10:0), R9B1 (Red:Blue = 9:1), R8B2 (Red:Blue = 8:2), R7B3 (Red:Blue = 7:3), R6B4 (Red:Blue = 6:4), and R1B1G1 (control, Red:Blue:Green = 1:1:1) and cultivated for 2 weeks. The stem length, shoot fresh weight, shoot dry weight, SPAD value and chlorophyll fluorescence (Fv/Fm) analysis of watercress were the highest in R7B3 and the lowest in R1B1G1. The photosynthesis rate and stomatal conductance showed the same tendency as watercress growth. Glucosinolate contents in watercress were the lowest at R9B1 and the highest at R7B3. R1B1G1 had a negative effect on the growth of watercress, but played a positive role in increasing the functional component.

국문 초록 (Abstract)

물냉이는 십자화과에 속하며 다양한 기능성을 지닌 글루코시놀레이트를 함유한 다년생 수생 식물이다. 글루코시놀레이트는 항암 및 천연 산화 방지제로 DNA를 공격하는 활성산소의 활성을 감소시키는 역할을 한다. 본 연구는 광질에 따른 물냉이의 생장 및 클루코시놀레이트 함량 변화에 대해 알아보기 위해 수행되었다. 물냉이 종자를 토양에 파종하여 2주간 육묘하였다. 파종 2주 후 식물체를 수경재배 시스템에 정식하여 R10(R:B:G = 10:0:0), R9B1(R:B:G = 9:1:0), R8B2(R:B:G = 8:2:0), R7B3(R:B:G = 7:3:0), R6B4(R:B:G = 6:4:0), R1B1G1(R:B:G = 1:1:1)의 6가지의 광질 하에서 2주간 재배하였다. 물냉이의 초장, 생체중, 건물중 및 엽록소 함량 및 엽록소 형광 분석 결과 R7B3 처리구에서 물냉이의 생육이 가장 높게 나타났으며, R1B1G1에서 가장 낮게 나타났다. 물냉이의 광합성 및 기공전도도 분석 결과 물냉이의 생육과 동일한 경향으로 나타났다. 물냉이 체내 글루코시놀레이트 함량은 R9B1에서 가장 낮았으며, R7B3에서 가장 높게 나타났다. R1B1G1의 경우 물냉이의 생육에는 부정적인 영향을 미쳤으나, 기능성 물질 증대에는 긍정적인 역할을 하였다.

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