FIGURE 7.

Effect of GA₃ and GA₄ on selected SL-pathway genes in AXBs. AXBs on single-node cuttings were fed with or without GA₃ and GA₄ at concentration of 10 μM. Gene expression was analyzed after 3 and 5 days of treatment. (A) MAX1.1 and MAX1.2. (B) D14a and D14b. (C) MAX2a and MAX2b. (D) BRC1 and BRC2. Values are calculated relative to control and represent the means of three biological replicates ± S.E. (n = six plants). The significance of factors in two-way ANOVA (T, treatments; D, duration in days; TxD, interaction) are indicated by asterisks (*P < 0.05; **P < 0.01; and ***P < 0.001). Asterisks above the bar indicate decrease (blue) or increase (red), relative to control, and above the hook differences between GA₃- and GA₄-treatments (Fischer’s LSD post hoc analysis; P-value at least < 0.05).