Auxerrois B
Name of vine variety in France
Auxerrois
Origin
Based on published genetic analyses, this variety is the result of the crossbreeding of Pinot and Gouais B. Its development was encouraged by the  Laquenexy (Moselle) research station. After 1950, the Station de Recherches Viticoles et Oenologiques de Colmar (The Colmar Viticulture and Oenology Research Station) strongly developed this variety in  Alsace vineyards. 
Synonymy
No synonym is officially recognized in France for this variety.In Germany, Auxerrois B can officially designate the names "Auxerrois Blanc" and "Pinot Auxerrois".
Regulations
In France, Auxerrois B is officially listed in the "Catalogue of vine varieties".This variety is likewise listed in the Catalogues of other European Union member states: Germany, Belgium, Luxemburg, Netherlands, Czech Republic and the United Kingdom.
Use
Wine grape variety
Evolution of area under vines in France
1958 1968 1979 1988 1998 2008 2016
ha 299 486 1193 1579 1904 2225 2479
Description
Identification signs include:
- young leaves are green or yellow,
- adult leaves are three-lobed with an open V-shaped petiolar sinus, short teeth compared to width, straight sides, low to medium anthocyanin pigmentation of veins, bubbled leaf blade, involute on underside, thin coat of upright hairs,
- round-shaped berries
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 232 239 178 188 244 238 227 249
Allel 2 149 236 243 186 196 246 248 235 271
Phenology
Bud burst: 9 days after Chasselas.
Grape maturity: I period, 1 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
This variety is well suited to northern areas and to limestone terroirs and is moderately vigourous. Low fertility when pruned short.
Sensitivity to diseases and pests
Auxerrois B is rather susceptible to grape caterpillars, downy mildew, grey rot and especially powdery mildew.
Technological potential
Auxerrois B grape clusters and berries are small. The wine produced in rather fine, slightly aromatic and not very acidic.
Clonal selection in France
The two approved Auxerrois B clones carry the numbers 56 and 57.
Bibliographic references
- Catalogue des variétés et clones de vigne cultivés en France. Collectif, 2007, Ed. IFV, Le Grau-du-Roi.
- Documentation interne du Domaine de Vassal. 1949-2011, INRA, Marseillan-plage.
- Cépages et vignobles de France, tome 2. P. Galet, 1990, Ed. Dehan, Montpellier.
Description of clones approved in France
Identity and availability Agronomic data Technical data
Clone number Origin Selection Fertility Production level Sugar content Potential color
Year approved Agronomic references Weight of grape clusters Vigor Total acidity Tannic structure
Growing surface area Size of berries Sensitivity to Botrytis Aromatic intensity Oenological aptitudes
56  Haut-Rhin  INRA  medium  medium  medium to high  
 1971  Alsace  medium      
 4.28 ha        distinctive wines of the vine variety
57  Haut-Rhin  INRA  medium to high  medium to high  medium  
 1971  Alsace  medium to high      
 2.66 ha        distinctive wines of the vine variety