A Guide to Grapevine Abnormalities in South Africa - P.G. GOUSSARD

Berry colour deviations.

PHOTO 453. A further example of discolouration in berries can be seen in one section of this bunch. Also note the onset of partial discolouration, in which case certain berries were subjected.

PHOTO 454. An example of a cultivar that has undergone a permanent mutation from black to grey, as associated with Cinsaut gris in this example.

290 • A Guide to Grapevine Abnormalities in South Africa