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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)