Cell death in winegrape berries may be a double-edged sword! It can be correlated with berry shrinkage but also related to flavour and sugar concentration. This article looks at shiraz, chardonnay and sultana berries, in terms of cell death and shrinkage.
Cell death occurs in pre-harvest berries of chardonnay and shiraz but not sultana. However, only shiraz consistently shrinks. This concentrates sugar and can lead to high alcohol wines. Shiraz is shown to be the ‘biggest loser’ in terms of weight loss but the flavour development and sugar concentration aspects are the other side of the double-edged sword.
Read the full article Is the shiraz berry the biggest loser? The double-edged sword of cell death in winegrapes. It may also be found in the August 2012 edition of Grapegrower and Winemaker.