Fig. 3. Effect of auxin concentration on the rooting rate of the rid5 mutant. Hypocotyl explants of the wild type and rid5 were cultured on RIM containing various concentrations of IBA at either 22°C or 28°C. Each symbol represents an average value of data obtained from two independent experiments, in which 25 hypocotyls were used for every point. Vertical lines indicate standard deviation.