Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Increased Growth by LED and Accumulation of Functional Materials by Florescence Lamps in a Hydroponics Culture System for Angelica gigas

당귀의 수경재배에서 LED 광원에 의한 생장 증가와 형광등에 의한 기능성물질 축적

  • Lee, Gong-In (National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Hong-Ju (Department of Horticultural Science, Chungnam National University) ;
  • Kim, Sung-Jin (Department of Horticultural Science, Chungnam National University) ;
  • Lee, Jong-Won (Institute of Agricultural Science and Technology, Kyungpook National University) ;
  • Park, Jong-Seok (Department of Horticultural Science, Chungnam National University)
  • Received : 2016.03.05
  • Accepted : 2016.03.29
  • Published : 2016.03.31
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Abstract

Angelica gigas, belonging family Apiaceae, is a perennial and famous medical plant growing in Korea, Japan, and China. The aims of this study was to analyze the growth and accumulated Decursin and its precursor Decursinol angelate of A.gigas grown under fluorescent lamp and LED. A. gigas 'Manchu' were sowed and managed for seedlings stage in a glass house for 4 weeks. One hundred twenty seedlings with 3 true leafs were transplanted at an ebb & flow system with fluorescent lamp and LED [red: peak wavelength 660nm, blue: peak wavelength 455 nm, white = 3:2:4 ratio] irradiated at $180{\pm}7{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ at the top of plant canopy for 5 weeks. The number of leaves increased by 13.5% in the LED treatment, though it is not statistically significant. Leaf length/width ratio of A. gigas grown under the fluorescent lamps was 24% bigger than the LED treatment and also the stem was 13% larger. Maximum root length was similar to both groups. Fresh weight and dry weight of shoots grown under the LED increased by 50% and 42% and the both weights of roots increased by 125% and 45%, respectively. The contents of Decursin and Decursinol angelate grown under the florescent lamps were larger than LED by 188% and 27% in shoot and 78% and 8% in root. The contents of Decursin and Decursinol angelate per plant grown under LED and florescent lamps were 132mg and 122mg. In conclusion, functional materials in A. gigas were increased by florescent light and its growth was promoted by LEDs light.

당귀는 미나리과에 속하는 약용식물로서 한국, 일본, 중국 등에서 재배된다. 본 실험의 목적은 형광등과 LED 광조사가 당귀 생육의 발달과 기능성 물질로 알려진 Decursinol angelate와 Decursin의 생성에 미치는 영향을 분석하고자 수행하였다. 당귀 '만추' 종자를 우레탄 스폰지에 파종 후 4주간 유리온실에서 육묘하였다. 본엽이 3매 전개된 120주를 저면관수 시스템에 이식하였다. LED [적색: peak wavelength 660nm, 청색: peak wavelength 455nm, white = 3:2:4 비율]와 형광등 조건에서 최상부 군락에서 광합성유효광량자속은 $180{\pm}7{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$로 동일하였으며 16:8의 일장조건에서 5주간 재배하였다. LED 처리에서 당귀의 엽수는 유의적 차이는 없었지만, 형광등 처리와 비교하여 13.5% 증가하였으며, 형광등 처리에서 당귀의 엽장과 엽폭의 비율과 초장은 각각 24, 13% 증가하였으며 최대 근장은 두 그룹이 유사하였다. LED 처리한 당귀의 지상부 생체중과 건물중은 50, 42%씩 증가하였으며, 지하부는 125, 45%씩 증가하였다. 형광등에서 재배된 당귀의 Decursin과 Decursinol angelate는 LED처리한 당귀보다 지상부에서 단위 건물중당 188, 27% 증가하였으며, 지하부에서 78, 8% 각각 증가하였다. LED와 형광등 처리에서 재배된 당귀의 한 개체당 Decursin과 Decursinol angelate의 함량은 132과 122mg 이었다. 결론적으로 기능성 물질은 형광등에서 증가되고 생장은 LED 조건에서 증가되는 것으로 나타났다.

Keywords

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