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Table 5 Prevalence of major grape viruses on major V. vinifera cultivars in Ontario

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

Viruses tested Cabernet Franc Cabernet Sauvignon Pinot Noir Merlot Syrah Chardonnay Riesling Pinot Gris Sauvignon Blanc Gewürz traminer
GLRaV-3 49.7 22.2 33.7 13.9 86.3 56.1 53.0 58.8 31.6 68.8
GLRaV-2 5.2 25.0 2.2 0.0 0.0 7.6 4.0 0.0 10.5 0.0
GLRaV-1 1.3 0.0 2.2 0.0 0.0 3.0 4.0 0.0 5.3 6.3
GRBV 25.8 22.2 7.6 5.6 64.7 21.2 2.0 20.6 26.3 0.0
GPGV 35.5 5.6 8.7 16.7 35.3 15.2 13.0 14.7 47.4 6.3
GVA 1.9 2.8 3.3 0.0 0.0 16.7 15.0 0.0 5.3 18.8
GVB 0.0 0.0 0.0 0.0 0.0 4.5 8.0 0.0 5.3 0.0
GRSPaV 89.8 72.2 87.0 97.2 100.0 95.5 68.0 94.1 100.0 81.3
GFkV 19.4 2.8 60.9 27.8 0.0 18.2 11.0 26.5 26.3 0.0
  1. The full names of viruses included in this table are provided in the list of abbreviations