Figure 2. Classification of the different degrees of PBD in cv Merlot, based on all samples collected at commercial harvest. Data from over-ripened grape clusters are included as an out-group to differentiate both types of berry shrinkages. Berry weight and extracted volume was measured for a set of 200 berries. Total anthocyanins are expressed as absorbance at 520 nm per gram of fresh weight, as described by Boss et al. (1996).


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