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Effects of exogenously applied GA3 concentrations on petiole angles to the horizontal (A) and petiole (B) and stem (C) elongation of wild-type and ethylene-insensitive Tetr tobacco in light with a high or a low R:FR. Data are means (n = 6–9) ± se. Data of control plants (i.e. plants that received no paclobutrazol and no GA3) from Figure 1 are replotted here for the clarity of comparison.
