Figure 4.

Effects by the cotreatment of JAs and IAA on LR number and the primary root length. A and B, LR number of wild-type (Col-0; A) and coi1-16s (B). C and D, The primary root length of wild type (Col-0; C) and coi1-16s (D). Four-day-old seedlings were transferred to 1/2 MS plate containing 0.04% DMSO (mock), 50 μm (−)-JA, 50 μm (+)-JA, or 50 μm PCIB in the absence or presence of 0.1 μm IAA and grown for an additional 3 d. Values are the means with se (n = 9–10). Different letters indicate significant differences between means (P < 0.05).