Fig. 2.

Effect of simulated shade on the hypocotyl response to hormone application. Wild-type seedlings were germinated and grown for 2 d under W and then either kept in W or transferred to W+FR for 5 more days. (A) Medium was supplemented with different concentrations of PIC, EBL, or GA₃. (B) Hypocotyl length of seedlings grown as depicted in (A) was measured for each treatment. (C) Medium was supplemented with 0.5 µM of PCZ or 1 µM PAC with different concentrations of EBL or GA₃. (D) Hypocotyl length of seedlings grown as depicted in (C) was measured for each treatment. In (B) and (D), values are means ±SE. Black asterisks indicate significant differences (Student’s t-test) relative to the corresponding W-grown controls; red asterisks indicate significant differences (two-way ANOVA) between W- and W+FR-grown seedlings in response to the corresponding hormone applied (*P<0.05, **P<0.01). (This figure is available in colour at JXB online.)