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2014 Vol.23, Issue 1 Preview Page
Effect of LED Light Wavelength on Lettuce Growth, Vitamin C and Anthocyanin Contents

LED광 파장이 상추생육과 비타민 C 및 안토시아닌 함량에 미치는 영향

Man Kwon Choi1
,
Gyeong Yun Baek2
,
Soon Joo Kwon4
,
Yong Cheol Yoon3
,
Hyeon Tae Kim2*
최 만권1
,
백 경윤2
,
권 순주4
,
윤 용철3
,
김 현태2*
1Institute of Agricultural & Life Science, Gyeongsang National Univ., Jinju 660-701, Korea
2Dept. of Bio-Industrial Machinery Eng., Gyeongsang National Univ. (Insti. of Agric. & Life Sci.), Jinju 660-701, Korea
3Dept. of Agricultural Eng., Gyeongsang National Univ. (Insti. of Agric. & Life Sci.), Jinju 660-701, Korea
4Korea Infrastructure Safety & Technology Corporation, Goyang 411-758, Korea
1경상대학교 농업생명과학연구원
2경상대학교 생물산업기계공학과(농업생명과학연구원),
3경상대학교 지역기반환경공학과(농업생명과학연구원)
4한국시설안전관리공단
*Corresponding Author : bioani@gnu.ac.kr
31 January 2014. pp. 19-25
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Abstract

In this study, we analyzed the growth characteristics of red lettuce under Light-emitting diode (LED) light environment as well as the change of vitamin C and anthocyanins of lettuce. We made five monochromatic light treatments (red 647 nm, 622 nm, blue 463 nm, 450 nm, White), six mixed red (R) and blue (B) light treatments (R : B = 9 : 1, 8 : 2, 7 : 3, 6 : 4, 5 : 5) and red + white, and three light treatments made according to photoperiod of LED with lighting sources ratio of red : blue (R : B = 8 : 2(18/06 h, 15/09 h, 12/12 h)). It was composed of totally 14 control beds. As a result, the red lettuce the most developed leaf height, leaf numbers and fresh weight under red single light, root length and leaf developed when grown under blue single light. Therefore, red light were related to above part of the lettuce, blue light were related to the growth of the underground part of lettuce. Case of the mixed light, leaf height, leaf numbers, fresh/dry weight of above and underground part were highest red + white light and root length and chlorophyll content were highest under red 7 : 3 blue light. Result of growing investigation by photoperiod, the red lettuce were considered to be most effective in 15/09 h (on/off). The content of anthocyanins; the single light source, mixed light and light irradiation period were highest under blue light (463 nm), red 7 : 3 blue and 18/06 h (on/off) light irradiation, respectively. The vitamin C showed the lowest content of 1.26 mg · L−1 under the white light, but showed the greatest content of 3.02 mg · L−1 for the control group.

Keywords
artificial light
cyanidin
growth characteristics
light quality
red leaf lettuce

본 연구는 단색광, 혼합광, 광조사 주기에 대해 총 14 가지 실험구를 설치하여 적치마 상추의 생육특성 안토시 아닌 및 비타민 C 함량에 대해 조사하였다. 그 결과, 단 색광 처리에서 적색광은 초장, 엽수, 지상부 생체중, 청 색광은 근장과 엽폭을 증대 시키는 것으로 나타났다. 따 라서 적색광은 상추의 지상부, 생육에 청색광은 지하부 생육에 많은 영향을 미치는 것으로 판단된다. 혼합광의 경우 적색광과 백색광 혼합광에서 초장, 엽수, 엽폭, 지 상부와 지하부의 생체중 및 건물중이 가장 높게 나타났 다. 이는 백색광이 LED광원에 비해 광파장 대역이 다양 하기 때문에 생육이 좋은 것으로 판단된다. 근장과 엽록 소 함량에 대해서는 적색광과 청색광의 비율이 7 : 3에서 가장 양호한 결과를 보였다. 광조사 시간에 따른 생육특 성은 광주기가 15/09h에서 가장 효과적인 반응을 보였다.

안토시아닌 함량의 경우, 단색광에서는 463nm의 청색 광 처리에서 가장 높았고, 혼합광에서는 적색광과 청색 광의 비율이 7 : 3일 때 가장 높게 나타났다. 또한 광조 사 주기에 따른 실험에서는 광주기 18/06h의 처리구에서 안토시아니 함량이 가장 높았다. 비타민 C 함량은 적색 광과 청색광의 비율이 8 : 2일 때 1.77mg · L−1로 가장 높 게 나타났으며, 백색광에서 1.26mg · L−1로 가장 적은 함 량을 보였다.

키워드
광질
생육특성
시아니딘
인공광원
적치마
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 23
  • No :1
  • Pages :19-25
  • Received Date : 2013-09-04
  • Revised Date : 2014-02-07
  • Accepted Date : 2014-02-21
  • DOI :https://doi.org/10.12791/KSBEC.2014.23.1.019
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