Fig. (3) Variation of a) peonidin-3O-glucoside/cyanidin-3O-glucoside and b) malvidin-3O-glucoside/malvidin-3O-p-coumaroyl-glucoside ratios of control (T1) and PhCO2 treated (T2) ‘Crimson Seedless’ grapes during ripening. Values are means of four replicates ± S.E.