The carotenoid content increased relative to the 0 h WL level under both WL + BL and WL + BL + UV-B at 24 h; however, by 48 h, the WL + BL + UV-B treatment showed a significant reduction compared with WL, while WL + UV-B displayed only a decreasing trend.
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Effects of Continuous Low-Level UV-B, Alone or in Combination with Blue Light, on Photosynthetic and Antioxidant Responses of Morphologically Distinct Red-Leaf Lettuce Cultivars.
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