- youngest 2-3 leaves of
vine tips become generally chlorotic,
sometimes becoming bright yellow, almost bleached in appearance. As the
leaves mature, they regain most of their normal colour.
- leaves may become pink on
cultivars that normally have purple leaves.
necrosis may develop on affected
leaves following extended periods of sunny
and humid weather.
may be seen growing
out from between halves of leaves that have not yet opened or as scattered
clumps on the upper surface of more mature leaves which may appear
similar to salt deposits.
- on some cultivars
affected leaves may be twisted or distorted.