Figure 5. Dose-dependent recovery of the mutant phenotypes by exogenous GA treatment.

(a) The bdw3-1 plants grown in different concentrations of GA₃ for four months. Bar = 10 cm. (b) Dose-dependent recovery of plant height. (c) Dose-dependent recovery of the bending culm phenotype, which was determined by measuring the angle between the main culm and the vertical axis. Error bars represent the standard deviation calculated from 3 replicates. Single (*) and double asterisks (**) indicate significant difference with the mock (0 M GA₃) at 0.5% (P<0.005) and 0.1% (P<0.001) levels of significance, respectively, as determined by t-test.