Abstract
Light and/or ethephon treatments given to two table grape cultivars produced significant changes in anthocyanins and phenolics in the skin of both varieties without any significant changes in soluble skin carbohydrate. There was no relationship between soluble carbohydrates and anthocyanins or soluble carbohydrates and total phenolics in the skins. These results are evidence that soluble sugar levels are not the causal agent of phenolic accumulation in grape skins.
- Received June 1982.
- Copyright 1983 by the American Society for Enology and Viticulture