Journal of Siberian Federal University. Biology / The Effects of LED Light Spectra on the Morphometric Traits and Biochemical Composition of Eruca sativa Mill.

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Issue
Journal of Siberian Federal University. Biology. 2025 18 (4)
Authors
Timofeenko, Ivan A.; Dranichnikova, Ekaterina A.; Malysheva, Vladislava V.; Kazachenko, Aleksandr S.
Contact information
Timofeenko, Ivan A. : Siberian Federal University Krasnoyarsk, Russian Federation; ; ORCID: 0000-0002-4996-4674; Dranichnikova, Ekaterina A. : Siberian Federal University Krasnoyarsk, Russian Federation; ORCID: 0009-0008-3119-9485; Malysheva, Vladislava V. : Siberian Federal University Krasnoyarsk, Russian Federation; Kazachenko, Aleksandr S. : Siberian Federal University Krasnoyarsk, Russian Federation; Institute of Chemistry and Chemical Technology SB RAS Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; Reshetnev Siberian State University of Science and Technology Krasnoyarsk, Russian Federation; Professor V. F. Voino-Yasenetsky Krasnoyarsk State Medical University Krasnoyarsk, Russian Federation; ORCID: 000-0002-3121-1666
Keywords
Eruca sativa; arugula; Eruca sativa; LEDs; light spectrum; photomorphogenesis; biochemical composition; hydroponics
Abstract

The present study aimed to determine how changes in the spectral composition of light- emitting diodes (LEDs) affect the growth and biochemical profiles of two arugula (Eruca sativa Mill.) cultivars, ‘Astra’ and ‘Gurman’, grown in a vertical hydroponic system. Plants were cultivated at a PPFD of 70 μmol m⁻² s⁻¹ under a 16:8 h photoperiod using a programmable luminaire designed at the Siberian Federal University for the red-shifted (R = 74 % R / 18 % G / 8 % B) and green-shifted (G = 28 % R / 46 % G / 26 % B) spectra and a LED FARM 80.0.x fixture for warm-white light (WW = 50 % R / 36 % G / 14 % B). Fresh shoot and root biomass, leaf morphometry, and the contents of chlorophylls, carotenoids, sugars, ascorbic acid, and nitrates were measured; data were analysed by one-way ANOVA followed by Tukey’s test (p < 0.05). ‘Gurman’ achieved its greatest shoot mass (34 ± 14 g plant⁻¹) and leaf area under WW, whereas the R and G spectra reduced these parameters by 63–72 %. In ‘Astra’, red light increased vitamin C concentration to 746 ± 49 mg kg⁻¹ dry matter; green light enhanced root formation and fibre synthesis in ‘Astra’ but suppressed these responses in ‘Gurman’. Across all treatments, leaves contained ≥ 5.4 g kg⁻¹ fresh weight nitrates; spectral shifts lowered their content only partially. The highest photopigment content was recorded under green light. Hence, optimal LED supplementation must be cultivar- specific: broad warm-white for ‘Gurman’ and red- shifted for ‘Astra’, with additional PPFD increases required to meet regulatory nitrate thresholds. These results provide a scientific and practical foundation for dynamic spectrum management in urban agro-systems, supporting higher yields and improved nutritional quality of leafy greens

Pages
550–563
EDN
UJQBXS
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/158029

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