Expression of VvF3'5'H-2 during the progress of ripening. Length polymorphic transcripts of VvF3'5'H-2 were detected semi-quantitatively after cDNA samples had been normalised upon actin gene expression, at the sampling dates reported in Fig 9. The short, medium and long transcripts were named according to the fragment size amplified from genomic DNA. At sampling 5, green berries (5g) were kept separated from red berries (5r). PCR amplification on 'Merlot' genomic DNA was loaded in the right extreme lane.