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2020 Vol.32, Issue 2 Preview Page

Research Article

Influence of Light Quality on the Growth of Baby Romaine Lettuce

광질이 베이비 로메인 상추의 생육에 미치는 영향

Y. D. Kim1
S. J. Han1
J. H. Lee2
I. L. Choi34
H. J. Kwon5
Y. H. Roh5
Y. H. Yoo6
H. M. Kang47*
김 용득1
한 수정1
이 주환2
최 인이34
권 희진5
노 유한5
유 용환6
강 호민47*
1Director, Cheorwon Plasma Research Institute, Cheorwon 24047, Korea
2Graduate Student, Kangwon National University, Division of Horticultural Science, Chuncheon 24341, Korea
3Post Doctor, Kangwon National University, Division of Horticultural Science, Chuncheon 24341, Korea
4Researcher, Kangwon National University, Agricultural and Life Science Research Institute, Chuncheon 24341, Korea
5Under Graduate Student, Kangwon National University, Division of Horticultural Science, Chuncheon 24341, Korea
6General Manager, Cheorwon Plasma Research Institute, Cheorwon 24047, Korea
7Professor, Kangwon National University, Division of Horticultural Science, Chuncheon 24341, Korea
1철원플라즈마산업기술연구원 본부장
2강원대학교 원예과학전공 대학원생
3강원대학교 원예과학전공 박사후 연구원
4강원대학교 농업생명과학연구원
5강원대학교 원예과학전공 학부생
6철원플라즈마산업기술연구원 실장
7강원대학교 원예과학전공 교수
* Corresponding Author
July 2020. pp. 108-115
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Abstract

In this study, the growth indices of leaf length, leaf width, number of leaves, fresh weight, T/R ratio, and leaf shape index of baby romaine lettuce grown under various light wavelengths were compared and investigated. During the interval between the 7th and 21st day, the leaf length was the longest in lettuce grown under red (R) light, followed by that grown under QD2 light mixed with B + R + FR light. The leaf width was the widest under the QD1 and QD2 light conditions, whereas the red (R) light caused the narrowest leaf width. The highest number of leaves occurred under QD2 light conditions, followed by QD1, with the least number of leaves occurring under the blue (B) light treatment. The heaviest top fresh weight was obtained under the QD2 light conditions, followed by QD1, although the root fresh weights in the QD1 and QD2 light treatments were higher than those in the other light treatments; no significant differences were observed between the red (R), QD1, and QD2 light treatments. The leaf index was the highest in the fluorescent lamp (FL) treatment, which also yielded the longest leaf, followed by the red (R) light treatment, whereas the QD1, QD2, blue (B) + red (R), and blue (B) light treatments showed the lowest leaf index values. Taken together, the results suggest that QD2 light might be an effective source of artificial light in the closed plant factories growing romaine lettuce because of the better growth indices compared to those obtained under other light treatments and the control (natural light).

Keywords
Fresh weight
Leaf length
Leaf shape index
Leaf width
T/R ratio
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Information
  • Publisher :Agriculture and Life Sciences Research Institute, Kangwon National University
  • Publisher(Ko) :강원대학교 농업생명과학대학 농업생명과학연구원
  • Journal Title :Journal of Agricultural, Life and Environmental Sciences
  • Journal Title(Ko) :농업생명환경연구
  • Volume : 32
  • No :2
  • Pages :108-115
  • Received Date :2020. 04. 27
  • Revised Date :2020. 07. 02
  • Accepted Date : 2020. 07. 07
  • DOI :https://doi.org/10.22698/jales.20200011
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