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Shoot phytochemical contents of Chinese kale subjected to different durations of UVA-radiation exposure. (A) SP. (B) SS. (C) Nitrate. (D) VC. (E) TF. (F) TPC. (G) DPPH. (H) FRAP. Different lowercase letters (a,b) labeled on the vertical bar (means ± standard error, n = 3) represent significant differences by one-way ANOVA with multiple-range tests (p ≤ 0.05).
