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2026 Vol.35, Issue 1

Original Articles

Different Peak Wavelengths of Supplemental Light Enhance Tomato Yield and Quality

보광의 파장 피크 차이가 토마토의 수량 및 품질 향상에 미치는 영향

In-Je Kang1
,
Gyu-Sik Yang1
,
Han-Sol Sim2
,
Seong-Nam Jang2
,
Ga Oun Lee2
,
Du Yong Cho2
,
Kye Man Cho34
,
Youngsam Park5
,
So-Rae Kim6
,
Ki-Ho Son78*
강 인제1
,
양 규식1
,
심 한솔2
,
장 성남2
,
이 가운2
,
조 두용2
,
조 계만34
,
박 영삼5
,
김 소래6
,
손 기호78*
1Graduate Student, Division of Horticultural Science, Grduate School of Gyeongsang National University, Jinju 52828, Korea
2Graduate Student, Department of GreenBio Science, Grduate School of Gyeongsang National University, Jinju 52828, Korea
3Professor, Department of GreenBio Science, Grduate School of Gyeongsang National University, Jinju 52828, Korea
4Professor, Division of Food Science, Gyeongsang National University, Jinju 52828, Korea
5Principal engineer, Lighting Marketing Group, Samsung Electronics, Yongin 17113, Korea
6General Manager, Lighting Marketing Group, Samsung Electronics, Yongin 17113, Korea
7Associate Professor, Department of GreenBio Science, Grduate School of Gyeongsang National University, Jinju 52828, Korea
8Associate Professor, Division of Horticultural Science, Grduate School of Gyeongsang National University, Jinju 52828, Korea
1경상국립대학교 원예과학부 대학원생
2경상국립대학교 생명자원과학과 대학원생
3경상국립대학교 생명자원과학과 교수
4경상국립대학교 식품공학과 교수
5삼성전자 전략마케팅팀 수석연구원
6삼성전자 전략마케팅팀 부장
7경상국립대학교 생명자원과학과 부교수
8경상국립대학교 원예과학부 부교수
*Corresponding Author
31 January 2026. pp. 1-9
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Abstract

During greenhouse cultivation of tomatoes (Solanum lycopersicum L.) light is often insufficient during the winter, limiting their yield and quality. Maintaining an appropriate spectral composition is critical for successful greenhouse production. While Supplemental lighting can mitigate the limitations of natural sunlight, empirical evidence defining the optimal spectrum for combined use remains scarce. In the present study, we investigated the effects of three types of spectrally tuned supplemental lighting on tomato photosynthesis, yield, and fruit quality in a short-day greenhouse. Sixty days after transplanting, greenhouse tomatoes were exposed to light-emitting diodes (LEDs) at a photosynthetic photon flux density of 400 ± 25 µmol·m-2·s-1 (full-spectrum LEDs and specific full-spectrum LEDs [blue and green wavelengths]), with a white spectrum engineered with the peak wavelength in the blue region to match chlorophyll a absorption, while the control group was grown without supplemental lighting. Notably, the yield increased by an average of 26% in the supplemental lighting groups compared with that in the control group. Specifically, custom white light increased the total fruit yield by 58% compared with the control group. Supplemental lighting under a short-day photoperiod enhanced the photosynthetic rate of tomatoes and increased their Brix content by more than 5%. Lycopene content and ABTS radical scavenging activity were higher in the control group, and pH and titratable acidity showed contrasting trends. Overall, our findings suggest that shifting the peak wavelength of supplemental light to match that of the photosynthetic pigments drastically enhances tomato yield. However, yield maximization occurs at the expense of key phytochemicals, highlighting a crucial tradeoff in the optimization of greenhouse production systems.

Keywords
fruit quality
greenhouse
light-emitting diodes
light quality
short-day

겨울철 온실에서의 일사량 부족은 온실 토마토(Solanum lycopersicum L.)의 수량과 품질을 제한한다. 보광은 자연광의 한계를 보완할 수 있으나, 복합 사용에 적합한 최적 스펙트럼에 대한 경험적 근거는 여전히 부족하다. 본 연구는 약광기 온실에서 스펙트럼이 조정된 세 종류의 LED 보광이 토마토의 광합성, 수량 및 과실 품질에 미치는 영향을 조사하였다. 정식 60일 후, 온실에 광합성 광양자 속밀도(PPFD) 400 ± 25 µmol m-2 s-1의 발광다이오드(LED)를 조사하였으며(full-스펙트럼 LED 및 특정 full-스펙트럼 LED[청색 및 녹색 파장]), 청색 영역의 파장 피크를 엽록소 a 흡수에 맞춘 백색 스펙트럼을 사용하였고, 대조구는 보광 없이 재배하였다. 보광 처리시 대조군 대비 평균 수량이 26% 증가하였으며, 파장 변환 전스펙트럼 백색광에서는 총 과실 수량이 58% 증가하였다. 또한 보광은 순광합성속도를 향상시켰고, 과실 당도를 5% 이상 증가시켰다. 리코펜 함량과 ABTS 라디칼 소거 활성은 대조군에서 높았으며, pH와 적정산도는 대조되는 경향을 보였다. 전반적으로, 본 연구 결과는 보광의 파장 피크를 광합성 색소 흡수 파장에 맞추는 것이 토마토 수량을 향상시킴을 시사한다. 그러나 수량의 증가는 주요 파이토케미컬 성분의 감소를 수반하며, 이는 온실 생산 시스템 최적화에서 중요한 상충 관계를 강조한다.

키워드
과실 품질
온실
발광다이오드
광질
약광기
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Journal of Bio-Environment Control
  • Journal Title(Ko) :생물환경조절학회지
  • Volume : 35
  • No :1
  • Pages :1-9
  • Received Date : 2025-11-10
  • Revised Date : 2025-12-11
  • Accepted Date : 2025-12-12
  • DOI :https://doi.org/10.12791/KSBEC.2026.35.1.001
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