Fig. 3

Profile of free volatiles in the grape berries in GT and CL regions. a A heatmap for the variation of free volatiles in the berries of two regions in 2010 and 2011. Each row represents an individual compound and each column represents an individual sample. The data was the mean of six values from each sample point. The data was normalized by rows used function “scale”. The topographycal colors are installed in deep red and deep blue, which depict relative concentration of terpenes from high to low. The color scale bar is shown at the right of the heat map. Dendrograms indicate the correlation between groups of terpenes; b Change in the concentration of main compounds in two regions in 2010 and 2011