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http://dx.doi.org/10.12791/KSBEC.2017.26.4.386

Growth and Phytochemical Contents of Spinach as Affected by Different Type of Fluorescent Lamp in a Closed-type Plant Production System  

Kim, Hyeon Min (Division of Applied Life Science, Graduate School of Gyeongsang National University)
Kim, Hye Min (Division of Applied Life Science, Graduate School of Gyeongsang National University)
Lee, Hye Ri (Department of Agricultural Plant Science, College of Agriculture & Life Sciences, Gyeongsang National University)
Lee, Jae Eun (R&D Center, KC Chemical)
Hwang, Seung Jae (Division of Applied Life Science, Graduate School of Gyeongsang National University)
Publication Information
Journal of Bio-Environment Control / v.26, no.4, 2017 , pp. 386-392 More about this Journal
Abstract
This study was conducted to examine the growth and phytochemical contents of spinach (Spinacia Oleracea L. 'Sushiro') as affected by different fluorescent lamps in a closed-type plant production system. Seeds were sown in a 128-cell plug tray filled in rockwool. The seedlings were transplanted into a DFT (deep floating technique) system with recycling nutrient solution (EC $1.5dS{\cdot}m^{-1}$ and pH 6.5) in a closed-type plant production system. The seedlings were grown under 3 types of fluorescent lamp, #S (NBFHF 32S8EX-D, CH LIGHTING Co. Ltd., China), #O (FHF32SSEX-D, Osram Co. Ltd., Germany), and #P (FLR32SS EX-D, Philips Co. Ltd., The Netherlands) at $150{\mu}mol{\cdot}m-2{\cdot}s^{-1}\;PPFD$ with a photoperiod of 14/10 (light/dark) hours. Plants were cultured under condition of $25{\pm}1^{\circ}C$ temperature and $60{\pm}10%$ relative humidity after transplanting. Thirty plants per each treatment were cultivated for $6^{th}$ week after transplanting. And growth and phytochemical contents were measured at $3^{rd}$ and $6^{th}$ week. At the $3^{rd}$ week after transplanting, the parameter values of plant height and leaf width were higher in the #O than the others. However, fresh and dry weights of root were the greatest in the #P. In addition, total phenolic concentration was the greatest in the #P. At $6^{th}$ week after transplanting, the #O had the greatest growth of spinach in the plant height and fresh and dry weights of shoot. The total phenolic contents significantly increased in the #O and showed significantly difference. However, there was no significant difference all treatments in antioxidant activity. Therefore, these results suggest that the #O was suitable for the growth and phytochemical accumulation of spinach in a closed-type plant production system.
Keywords
antioxidant activity; deep floating technique; phenolic concentration; Spinacia oleracea L.;
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