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2024 Vol.42, Issue 3 Preview Page

Research Article

Evaluation of Growth, Vegetation Indices, and Photosynthesis of Cichorium intybus L. Seedlings as Affected by LED Light Qualities in a Closed Nursery Facility

폐쇄형 육묘시설에서 LED 광질의 영향을 받은 치커리묘의 생육과 식생지수 및 광합성 평가

Eun Ji Shin12†
,
Jae Hwan Lee12†
,
Sang Yong Nam12*
신 은지12†
,
이 재환12†
,
남 상용12*
1Department of Environmental Horticulture, Sahmyook University, Seoul 01795, Korea
2Natural Science Research Institute, Sahmyook University, Seoul 01795, Korea
1삼육대학교 환경원예학과
2삼육대학교 자연과학연구소
*Corresponding Author
†These authors contributed equally to this work.
30 June 2024. pp. 350-364
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Abstract

Cichorium intybus, a leafy vegetable belonging to the Asteraceae family, is known for its potential health benefits and the inclusion of various bioactive compounds and indigestible oligosaccharides that improve liver function and aid in fatigue recovery. In this study, we evaluated the effects of light-emitting diode (LED) light qualities on the growth, vegetation indices, and photosynthesis of the C. intybus cultivars ‘Asia Sugar’ and ‘Rossa Italiana’, grown in a closed nursery facility. LED light treatments included seven types of monochromatic, composite, and white LEDs (i.e., red, green, blue; purple; 3000, 4100, and 6500 K white LEDs) applied to these cultivars. The results showed that ‘Asia Sugar’ reached its largest size under the 3000 and 4100 K white LED treatments, whereas ‘Rossa Italiana’ exhibited the highest growth under the 3000 K white LED light treatment. An analysis of monochromatic light revealed that red LED light increased plant sizes and weights compared to blue LED light, and a higher distribution of red wavelengths within the white light spectrum positively influenced plant sizes and weights. With regard to increasing plant weights, both cultivars performed best under 3000 and 4100 K white LEDs, similar to the results for plant sizes. In contrast, ‘Asia Sugar’ showed the most favorable vegetation and photosynthetic indices under 4100 and 6500 K white LEDs, while the ‘Rossa Italiana’ showed the most favorable photosynthetic indices and chlorophyll content (SPAD units) under 6500 K white LED, opposite to the plant size results. These findings provide valuable insights into how specific LED light qualities can be optimized to enhance the growth and physiological responses of Cichorium intybus cultivars seedlings.

Keywords
Asteraceae
chlorophyll fluorescence
monochromatic LEDs
spectral distribution
white LEDs

치커리(Cichorium intybus)는 국화과(Asteraceae)에 속한 엽채소류의 일종이다. 치커리는 샐러드로 이용이 가능하고 다양한 유효성분 및 난소화성 다당류가 포함되어 있으며 간 기능을 향상시켜 피로회복에도 도움을 준다. 본 연구에서는 폐쇄형 육묘시설에서 발광 다이오드(light-emitting diode, LED) 광질의 영향을 받은 치커리묘의 생육, 식생지수, 광합성을 평가하였다. LED 처리는 적색, 녹색, 청색, 보라색, 3000, 4100, 6500K 백색 LED로 총 7가지 처리로 나누었으며 품종은 ‘아시아슈가’(Cichorium intybus cv. Asia Sugar)와 ‘로사이탈리아나’(C. intybus cv. Rossa Italiana) 두 품종을 선정하였다. 실험 결과에서 식물체 크기는 ‘아시아슈가’의 경우 3000, 4100K 백색 LED에서 높게 나타났으나, ‘로사이탈리아나’ 품종은 3000K 백색 LED 처리구에서 높게 나타났다. 단색광 처리구 내에서는 적색 LED가 청색 LED에 비해 치커리 묘의 크기와 무게를 증가시키는 것으로 나타났으며, 백색광 내에서도 적색 파장의 분포가 높은 경우 식물체 크기와 무게 증가에 긍정적인 영향을 주는 것으로 보인다. 한편, 치커리 묘의 생체중, 건물중의 결과에서는 두 품종 모두 3000, 4100K 백색 LED에서 좋았던 것으로 나타나 식물체 크기의 결과와 유사하였다. 식생지수, 광합성 분석에서는 ‘아시아슈가’ 품종의 경우 4100, 6500K 백색 LED에서 식생지수와 광합성이 가장 양호하였으며, ‘로사이탈리아나’ 품종의 경우 6500K 백색 LED에서 광합성 지수, 엽록소 수치가 가장 양호하여 식물체 크기의 결과와 일부 상반된 결과를 나타내었다. 이러한 결과는 치커리 묘의 생육과 생리적 기능을 향상시키기 위한 LED 광질 최적화에 대한 향상된 정보를 제공한다.

키워드
국화과
엽록소 형광
단색 LED
분광분포
백색 LED
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :한국원예학회
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 42
  • No :3
  • Pages :350-364
  • Received Date : 2023-04-13
  • Revised Date : 2023-06-10
  • Accepted Date : 2023-07-06
  • DOI :https://doi.org/10.7235/HORT.20240029
Journal Informaiton Horticultural Science and Technology Horticultural Science and Technology
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