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  • Author or Editor: R.C. Musselman x
  • HortScience x
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Abstract

Fifty-nine American, 40 Frency hybrid, and 6 Vitis vinifera L. grape cultivars growing in vineyards at Geneva, N.Y., were rated 4 consecutive years at mid-September for oxidant stipple injury from ambient ozone. There were significant differences in injury among the American and French hybrid cultivars. Cluster analysis separated the American cultivars into 3 sensitivity groups and the french hybrids into 2 sensitivity groups. American cultivars had the highest variability among cultivars in sensitivity, with Ives and Couderc 3309 having the highest sensitivity. High sensitivity to ozone as evidenced by oxidant stipple injury appears to originate within the American Vitis species. None of the cultivars examined was resistant to ambient ozone.

Open Access