Changes in the root length, root fresh weight and root dry weight of soybean seedlings treated for 24(CIN), p-coumaric (p-COU), caffeic (CAF), ferulic (FER) and sinapic (SIN) acids.

Values (N = 4 ± SE) significantly smaller than the control (P≤0.05, Dunnett's multiple comparison test) are marked with an asterisk (*). ns = not significant. The % symbol represents inhibition of statistically significant means in comparison with the control (0 mM).