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Table 1 Sampling of Vitis vinifera grape cultivars

From: Survey for major viruses in commercial Vitis vinifera wine grapes in Ontario

Types of grapes Name of cultivar No. of vineyard blocks No. of samples
Red grape cultivars Cabernet Franc 23 155
Cabernet Sauvignon 9 36
Pinot Noir 23 92
Merlot 9 36
Syrah 9 51
Gamay Noir 2 9
Petit Verdot 1 3
Subtotal for red grapes 7 76 382
White grape cultivars Chardonnay 16 66
Riesling 21 117
Pinot Gris 8 34
Sauvignon Blanc 5 22
Gewurztraminer 5 16
Chardonnay Musque 3 9
Chenin Blanc 1 3
Savagnin 1 4
Viognier 1 5
Subtotal for white grapes 9 61 275
Total 16 137 657
  1. Composite sample composed of two basal leaves per vine from five vines in a panel (10 leaves in total for a composite sample)