Sunday, September 15, 2013
This year, a handful of the Pinot grigio vines entirely sported green (white) grapes. One particular vine had all grey grapes except for the apical shoot position (on just one of it's two fruiting canes) which had two green clusters. And then there was the cluster above which had about 50% each of both grey and green.
All grapevines have unique characteristics called transposons, also known as jumping genes, which can express themselves in different growing seasons. Pinot noir - most likely the parent/origin of Pinots blanc, gris and Meunier - has a really strong proclivity toward spontaneous mutation in the vineyard. And that's all well and good, I just wasn't prepared for so many instances of the Pinot family's genetic instability in my vineyard. The grapevines are apparently confused, and so am I. Oh well, what's new? Happy harvest!