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Trichome structure of phytohormone-treated rosette leaves. A, Scanning electron micrographs of trichomes treated with JA, BAP, and GA3 14 d after treatment. Solid and dashed white lines indicate trichome stalk and trichome branch, respectively, and white arrows indicate the trichome papillae. B, Trichome stalk (white bars) and branch (black bars) length. Error bars represent se (n = 9). Statistical significance was determined by Student's t test (** P < 0.01, * P < 0.05).
