Various Light Quality including QD-LED Affect Growth and Leaf Color of Red Romaine Baby Leaf Lettuce

  • Su Jung HAN Kangwon National University, Division of Horticulture and Systems Engineering, Program of Horticulture, Chuncheon 24341
  • In-Lee CHOI Kangwon National University, Division of Horticulture and Systems Engineering, Program of Horticulture, Chuncheon 24341
  • Ju Young KIM Kangwon National University, Division of Horticulture and Systems Engineering, Program of Horticulture, Chuncheon 24341
  • Lixia WANG Kangwon National University, Division of Horticulture and Systems Engineering, Program of Horticulture, Chuncheon 24341
  • Joo H. LEE Kangwon National University, Division of Horticulture and Systems Engineering, Program of Horticulture, Chuncheon 24341
  • Ki-Young CHOI Kangwon National University, Department of Controlled Agriculture, Chuncheon 24341
  • Yongduk KIM Cheorwon Plasma Research Institute, Cheorwon 24062
  • Mohammad Z. ISLAM Gachon University, Department of Food Science and Biotechnology, Seongnam 13120
  • Young-Tack LEE Gachon University, Department of Food Science and Biotechnology, Seongnam 13120
  • Ho-Min KANG Kangwon National University, Division of Horticulture and Systems Engineering, Program of Horticulture, Chuncheon 24341 https://orcid.org/0000-0003-1703-4699
Keywords: anthocyanin; chlorophyll; hue angle; photosynthetic rate; plant factories

Abstract

Light quality has a substantial effect on crops in plant factories. Quantum dot (QD) refers to ultrafine semiconductor particles and is expressed in a variety of wavelength ranges and fine and precise colors and is attracting attention as a next-generation material. This study was conducted to investigate the effects of various light qualities, including a QD-LED light source on the growth and color development of red romaine lettuce in the LED chamber system for plant factories. The light source was red fluorescent (FL), blue (B), red (R), blue + red mixed light (BR), and blue + wide range red + red mixed light QD-LED. The growth index, chlorophyll content, and leaf color were examined. The results showed that the plant length was long without a significant difference in QD-LED and the red (R) wavelength and showed the fastest growth under QD-LED. The photosynthetic rate and chlorophyll content were the highest in QD-LED light with a broad spectrum of red light. The leaf colors a*, b*, the hue angle, and total anthocyanin content showed the highest in QD-LED light, while b* and the hue angle values ​​were the lowest. As the light wavelength range was changed, there was a significant difference in the growth response and leaf color, and it is considered that QD-LED light should be considered positively when applied to plant factories.

 

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In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 3, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue.

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Published
2019-05-28
How to Cite
HAN, S. J., CHOI, I.-L., KIM, J. Y., WANG, L., LEE, J. H., CHOI, K.-Y., KIM, Y., ISLAM, M. Z., LEE, Y.-T., & KANG, H.-M. (2019). Various Light Quality including QD-LED Affect Growth and Leaf Color of Red Romaine Baby Leaf Lettuce. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 47(3). https://doi.org/10.15835/nbha47311580
Section
Research Articles