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Research Article

Effects of Grapevine Red Blotch Disease on Cabernet franc Vine Physiology, Bud Hardiness, and Fruit and Wine Quality

Pat Bowen, Carl Bogdanoff, Sudarsana Poojari, Kevin Usher, Tom Lowery, José Ramón Úrbez-Torres
Am J Enol Vitic.  2020  71: 308-318  ; DOI: 10.5344/ajev.2020.20011
Pat Bowen
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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  • For correspondence: pat.bowen@canada.ca
Carl Bogdanoff
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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Sudarsana Poojari
2Cool Climate Viticulture and Oenology Institute, Brock University, St. Catharines, ON
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Kevin Usher
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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Tom Lowery
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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José Ramón Úrbez-Torres
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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Abstract

The effects of grapevine red blotch disease (GRBD) on vine performance were studied in a Cabernet franc vineyard in the Okanagan Valley, British Columbia, over two years. Vines with GRBD had lower pruning mass, were less winter hardy than non-GRBD vines, and produced lower yields comprising fewer clusters and larger berries with more seeds. GRBD reduced photosynthesis and stomatal conductance for asymptomatic leaves through the growing season, and more so for symptomatic leaves. Leaf fall was delayed or incomplete for GRBD vines. GRBD reduced berry soluble solids, anthocyanins, yeast assimilable nitrogen, and tannins and increased berry pH and titratable acidity. Wine made from GRBD fruit had reduced anthocyanin and alcohol, lighter color, and more yellow hue. Effects of GRBD on wine sensory characteristics included less body and aftertaste, lower intensity of black and red fruit character, and increased acidity and intensity of vegetal character. Inclusion of low amounts, up to 20%, of GRBD fruit in wine reduced red fruit character in the first year and increased astringency and vegetal character in the second year. The deleterious effects of GRBD on yield, fruit composition for winemaking, and bud hardiness constitute a serious threat to grapegrowing regions in Canada and the United States. The degree of these impacts would be difficult to mitigate through management practices, which underscores the importance of planting virus-tested vines to prevent the introduction and spread of GRBD.

  • anthocyanin
  • bud hardiness
  • grapevine red blotch virus
  • photosynthesis
  • Vitis vinifera
  • wine sensory quality
  • yield components
  • Received February 2020.
  • Revision received June 2020.
  • Accepted June 2020.
  • Published online October 2020
  • Copyright © Her Majesty the Queen in Right of Canada, as represented by the Minister of Agriculture and Agri-Food Canada, 2020.
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You have accessRestricted access
Effects of Grapevine Red Blotch Disease on Cabernet franc Vine Physiology, Bud Hardiness, and Fruit and Wine Quality
Pat Bowen, Carl Bogdanoff, Sudarsana Poojari, Kevin Usher, Tom Lowery, José Ramón Úrbez-Torres
Am J Enol Vitic.  2020  71: 308-318  ; DOI: 10.5344/ajev.2020.20011
Pat Bowen
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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  • For correspondence: pat.bowen@canada.ca
Carl Bogdanoff
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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Sudarsana Poojari
2Cool Climate Viticulture and Oenology Institute, Brock University, St. Catharines, ON
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Kevin Usher
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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Tom Lowery
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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José Ramón Úrbez-Torres
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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Effects of Grapevine Red Blotch Disease on Cabernet franc Vine Physiology, Bud Hardiness, and Fruit and Wine Quality
Pat Bowen, Carl Bogdanoff, Sudarsana Poojari, Kevin Usher, Tom Lowery, José Ramón Úrbez-Torres
Am J Enol Vitic.  2020  71: 308-318  ; DOI: 10.5344/ajev.2020.20011
Pat Bowen
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
  • Find this author on Google Scholar
  • Find this author on PubMed
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  • For correspondence: pat.bowen@canada.ca
Carl Bogdanoff
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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Sudarsana Poojari
2Cool Climate Viticulture and Oenology Institute, Brock University, St. Catharines, ON
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Kevin Usher
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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Tom Lowery
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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José Ramón Úrbez-Torres
1Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, Canada, V0H 1Z0
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