자외선과 원적색광을 포함한 복합광 조사에 따른 호라산 밀싹의 생육 및 생화학적 특성

초록

With growing interest in extending light spectra beyond the visible range to improve crop yield and quality, this study investigated the effects of combined light treatments, comprising multiple wavelengths including ultraviolet-A and far-red, on the germination and sprout growth of Khorasan wheat under controlled conditions. Growth and biochemical parameters, including stem and root development, total polyphenol content, and antioxidant activity, were assessed relative to a white light control in the laboratory condition. The combined light treatments significantly enhanced morphological characteristics such as stem diameter, root length, fresh weight, and leaf dry weight compared with white light. However, both total polyphenol content and antioxidant activity showed a decreasing tendency, suggesting a potential inverse relationship between morphological enhancement and antioxidant responses. Moreover, two combined light regimes with different ultraviolet-A and far-red levels displayed similar overall trends, though the magnitude of plant responses varied. These findings indicate that while combined light can promote specific growth characteristics, it may simultaneously suppress antioxidant capacity. The results provide a valuable basis for designing light management strategies to optimize Khorasan wheat sprout production in plant factory systems.

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