Dijon clones

Dijon clones
Name	Dijon clones
Species	Vitis vinifera
Origin	Burgundy
Regions	Burgundy, Napa Valley, Sonoma County, Loire Valley, New Zealand
Notable varieties	Pinot noir clones, Chardonnay clones

Dijon clones are selection-derived vine clones originating from vine nurseries and research stations in Burgundy, France, associated with intensive selection programs in the late 20th century. They are widely used in international viticulture by producers in regions such as Burgundy, Champagne (province), Napa Valley, Willamette Valley, and Marlborough (New Zealand), and have influenced appellation practices in jurisdictions like Appellation d'Origine Contrôlée and regulatory approaches in organizations such as the International Organisation of Vine and Wine. Dijon clones are notable for contributing to stylistic shifts in wines linked to famous houses like Domaine de la Romanée-Conti, Louis Jadot, Joseph Drouhin, Robert Mondavi Winery, and Cloudy Bay.

History

The origins trace to selections at institutions including the Institut National de la Recherche Agronomique and private nurseries associated with families such as the Mommessin family and companies like Vilmart & Cie, developed amid post‑phylloxera recovery alongside programs in regions such as Brittany and collaborations with researchers from INRA. Adoption accelerated after interactions with breeders from California Department of Food and Agriculture, researchers at UC Davis, and consulting oenologists connected to Robert M. Parker Jr.‑era critiques, which affected plantings by estates like Beringer Vineyards and Chandon.

Development and Breeding

Selection methods used institutions including INRA, University of California, Davis, and commercial nurseries such as VCR (Vignes et Crops Remarquables) employed clonal selection, massal selection, and micropropagation techniques derived from protocols advocated by scientists associated with Pierre Galet and laboratories at CNRS. Breeding aimed to isolate stable phenotypes of Pinot noir and Chardonnay through cuttings selected for bud burst timing, cluster morphology, and sugar accumulation, with experimental trials conducted in trial plots at sites overseen by agencies like ONIVINS and research stations in Burgundy.

Characteristics and Varieties

Dijon selections encompass numerous numbered clones (commonly labeled in nurseries) affecting cultivars such as Pinot noir, Chardonnay, Sauvignon blanc (influenced by Dijon‑era selection philosophies), and lesser‑planted varieties trialed by houses like Maison Louis Latour. Characteristic traits include variable vigor, bunch compactness, phenolic ripeness profiles, and aromatic expressions exploited by winemakers at Domaine Jacques Prieur, Domaine Faiveley, and international estates such as Opus One. Specific Dijon selections have been associated with distinct organoleptic outcomes discussed in symposiums at institutions like Ecole Nationale Supérieure Agronomique.

Viticultural Practices and Regions

Viticultural adoption spans Burgundy, Champagne (province), Loire Valley, Napa Valley, Sonoma County, Marlborough (New Zealand), Tasmania, and South Australia with practices tailored by regional authorities such as INAO and researchers at Curtin University. Growers integrate Dijon selections into training systems used by estates like Domaine Leflaive and Antinori and adapt canopy management, yield control, and harvest timing to suit microclimates in appellations including Vosne-Romanée, Meursault, and Pomerol‑adjacent sites. Clonal choices influence licensing decisions overseen by regulatory bodies like California Department of Food and Agriculture and import-export protocols administered by European Commission agencies.

Wine Styles and Winemaking Techniques

Winemakers at houses such as Domaine de la Vougeraie, Bouchard Père et Fils, Domaine Pierre Yves Colin-Morey, and New World wineries like Stag's Leap Wine Cellars adjust maceration, oak regimen, and fermentation temperature to accentuate Dijon‑selection attributes. Techniques include cold soak, whole bunch fermentation debated in panels with speakers from Institute of Masters of Wine, and malolactic fermentation management promoted at workshops by American Society for Enology and Viticulture. Resulting wines range from lean, mineral‑driven expressions favored by sommeliers at establishments like The French Laundry to riper, fruit-forward styles marketed by commercial brands such as Kendall-Jackson.

Market Impact and Global Spread

The global distribution of Dijon selections reshaped nursery trade managed by firms like Viticulteurs Associés and influenced vineyard investment patterns tracked by analysts at Rabobank, Vineyard & Winery Management, and commentators from Wine Spectator. Their proliferation contributed to debates within producer organizations including Confédération des Appellations d'Origine Vin (CIVB) and trade negotiations involving bodies like World Trade Organization regarding plant material movement. High-profile adoptions by estates such as Domaine Dujac and Château Montelena amplified consumer recognition, feeding coverage in media outlets including Decanter (magazine), The Wall Street Journal, and The New York Times.

Disease Resistance and Research Advances

Research on Dijon selections involves collaboration among INRAE, UC Davis Department of Viticulture and Enology, CSIRO, and university programs at Bordeaux Sciences Agro to evaluate susceptibility to pathogens like Botrytis cinerea and to rootstocks affected by phylloxera. Studies assess tolerance to abiotic stressors linked to climate change debated at conferences such as OIV Congress and conducted in trials funded by consortia including European Commission Horizon 2020 partners. Genetic and ampelographic analyses reference methodologies championed by researchers like Pierre Galet and laboratories at CNRS to inform integrated disease management strategies promoted by extension services in regions like Burgundy and California.

Category:Viticulture