Fig. 2.

Semi-quantitative expression of six DAM genes in terminal tissues of field-grown peach trees throughout an annual growth cycle. Amplification products were quantified by densitometry following gel electrophoresis. A peach tubulin-α amplification was performed in each reaction tube along with the target gene specific primers as a loading control and quantitation reference. Tubulin-α band intensities within each amplification reaction were set to 100 and the target gene amplification product intensity was calculated relative to the tubulin-α control for each amplification product. Each symbol represents the average of samples from three individual trees, error bars are standard deviations. Vertical dashed lines are as in Fig. 1. DAM1, 2, and 4 are on a different y-axis scale to DAM3, 5, and 6 to improve the visualization of the expression dynamics.