Articles
Effects of light conditions on growth and glucosinolate content of Chinese cabbage grown in a plant factory
Article number
1337_23
Pages
171 – 178
Language
English
Abstract
Artificial light has a significant impact on crop growth and development in protected crop cultivation facilities.
Light conditions, such as light type, intensity, and photoperiod, directly influence the quantity and quality (functional components) of crops.
In this study, the effects of light type, light intensity, and photoperiod on the growth and glucosinolate content of Chinese cabbage were investigated.
Specifically, the effects of three different light sources (red:blue:white (R:B:W), red:white (R:W), and fluorescent (FL)), five photosynthetic photon flux density (PPFD) levels (100, 130, 160, 190, and 220 µmol m‑2 s‑1), and five different photoperiods (12/12, 14/10, 16/8, 18/6, and 20/4 day/night cyclic h) were evaluated.
Leaf parameters, including leaf length, leaf weight, and glucosinolate content, were measured.
Chinese cabbage was cultivated in a plant factory and growing conditions were maintained through a wireless sensor and control network system.
Leaf samples were collected at 2 and 4 weeks after transplantation.
The results showed that the optimal conditions for leaf length and weight at 2 weeks were R:B:W light, photoperiod 20/4 h, and PPFD 100 or 220 µmol m‑2 s‑1; while the optimal conditions at 4 weeks were R:B:W light, photoperiod 18/6 h, and PPFD of 130 µmol m‑2 s‑1. High glucosinolate content was achieved under the conditions, R:B:W with 20/4 photoperiod at 2 weeks, and FL with 14/10 photoperiod at 4 weeks.
Protected growing facilities with the lighting conditions identified in this study will help to facilitate growth of glucosinolate-rich Chinese cabbage with a high production capacity.
Light conditions, such as light type, intensity, and photoperiod, directly influence the quantity and quality (functional components) of crops.
In this study, the effects of light type, light intensity, and photoperiod on the growth and glucosinolate content of Chinese cabbage were investigated.
Specifically, the effects of three different light sources (red:blue:white (R:B:W), red:white (R:W), and fluorescent (FL)), five photosynthetic photon flux density (PPFD) levels (100, 130, 160, 190, and 220 µmol m‑2 s‑1), and five different photoperiods (12/12, 14/10, 16/8, 18/6, and 20/4 day/night cyclic h) were evaluated.
Leaf parameters, including leaf length, leaf weight, and glucosinolate content, were measured.
Chinese cabbage was cultivated in a plant factory and growing conditions were maintained through a wireless sensor and control network system.
Leaf samples were collected at 2 and 4 weeks after transplantation.
The results showed that the optimal conditions for leaf length and weight at 2 weeks were R:B:W light, photoperiod 20/4 h, and PPFD 100 or 220 µmol m‑2 s‑1; while the optimal conditions at 4 weeks were R:B:W light, photoperiod 18/6 h, and PPFD of 130 µmol m‑2 s‑1. High glucosinolate content was achieved under the conditions, R:B:W with 20/4 photoperiod at 2 weeks, and FL with 14/10 photoperiod at 4 weeks.
Protected growing facilities with the lighting conditions identified in this study will help to facilitate growth of glucosinolate-rich Chinese cabbage with a high production capacity.
Authors
Ngo-Viet Duc, M. Chowdhury, M. Ali, Sang-Un Park, Yong-Joo Kim, Sun-Ok Chung
Keywords
Chinese cabbage, plant factory, light conditions, growth parameters, functional component
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