Growth and bioactive compounds as affected by irradiation with various spectrum of light-emitting diode lights in drropwort

Title
Growth and bioactive compounds as affected by irradiation with various spectrum of light-emitting diode lights in drropwort
Authors
김상민전유진손기호오명민
Keywords
식물공장; 미나리; LED; 기능성작물; anthocyanins; light quality; persicarin; plant factory; total phenolic content
Issue Date
2017-10
Publisher
Horticulture Environment and BIotechnology
Citation
VOL 58, NO 5-478
Abstract
The aim of this study was to determine the effect of irradiation of various spectrums generated by light-emitting diodes (LEDs) on the growth and accumulation of bioactive compounds in dropwort (Oenanthe stolonifera). Dropwort plants with 2-3 offshoots were grown under three monochromatic LEDs: red (R; 654 nm), blue (B; 456 nm), and green (G; 518 nm), thirteen combinations of R and B (R:B = 9:1, 8:2, 7:3, and 6:4), RB with G (R:G:B = 9:1:0, 8:1:1, 7:1:2, and 6:1:3), and RB with white (W) (R:W:B = 8:2:0, 8:1:1, 7:2:1, 7:1:2, and 6:2:2) and fluorescent lamps (control) for 6 weeks. R LEDs improved growth characteristics, including plant height and fresh and dry weights of shoots. Combined LEDs with 70-80% red wavelength resulted in the highest values in fresh weight. The B LED treatment resulted in the highest total phenolic and anthocyanin content in dropwort leaves, which increased in the combined LEDs treatments as the proportion of blue wavelength increased. Further, the RWB treatments, regardless of the ratio, resulted in higher anthocyanin contents than that in the RB and RGB treatments. Persicarin content was also significantly higher in the B treatment than in the R and G treatments. However, compared to the RB treatments, persicarin content in the RGB and RWB treatments was decreased, on average, by 72 and 64%, respectively. We suggested that the light spectrum is closely related to the enhancement of growth and bioactive compounds. Our findings provide basic information for designing lighting systems in plant factories to improve the growth and bioactive compounds in dropwort.
URI
http://pubs.kist.re.kr/handle/201004/66390
ISSN
2211-3452
Appears in Collections:
KIST Publication > Article
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