Figure 1. Effects of plant hormone treatment on shoot growth in young rice seedlings.
Abscisic acid (ABA) treatment was combined with salicylic acid (SA) (a,b), indole acetic acid (IAA) (c), 6-benzylaminopurine (BAP) (d), or gibberellic acid (GA3) (e). Error bars show SD (n = 9). Asterisks indicate a significant difference from the ABA-only treatment (*P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001; Student's t-test).