FIGURE 8.

GA or H₂O₂ upregulated the transcript level of GA biosynthesis genes NtGA20_OX2 (A,B), NtGA20_OX1 (C,D), and NtGA3_OX2 (E,F) during seed imbibition. Seeds were collected, respectively, at 0, 24, and 48 h during imbibition, and four replications for each treatment at each sampling time were used. Different small letters on top of the bars indicate significant differences (LSD, α = 0.05) among treatments at the same imbibition time. Error bars indicate ± SE of mean (n = 4). For additional explanations, please see Figure 1.