Jacquère B
Name of vine variety in France
Jacquère
Origin
This vine variety native to the Savoie region is, based on published genetic analyses, probably a descendant of Gouais B.
Synonymy
No synonym is officially recognized in France for this variety, nor in other countries in the European Union.
Regulations
In France, Jacquère B is officially listed in the "Catalogue of vine varieties".

This variety is likewise listed in the Catalogue du Portugal.
Use
Wine vine variety
Evolution of area under vines in France
1958 1968 1979 1988 1998 2008 2016
ha 1362 1491 855 995 1104 1079 922
Description
Identificationsigns include:
- the tip of the young shoots has a heavy coat of flat-lying hairs,
- the young leaves are green with bronze patches,
- adult leaves have 3 or 5 lobes with an open V-shaped petiolar sinus, long teeth compared to width at base, straight sides, moderate to heavy anthocyanin pigmentation of veins, an upturned leaf blade and the underside with a slight coat of flat-lying hairs,
- round-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 223 239 176 196 244 240 227 239
Allel 2 141 232 249 178 204 252 254 245 271
Phenology
Bud burst: 1 day after Chasselas.
Grape maturity: period II, 3 weeks after Chasselas.
Suitability for cultivation and agronomic production
Jacquère B is fairly fertile, regularly productive with moderate vogor. Preference should be given to short pruning. Jacquère B is well adapted to clay limestone and rocky scree terroirs.
Sensitivity to diseases and pests
This vine variety is susceptible to black-rot and grey rot but resists well against downy and powdery mildew.
Technological potential
Grape clusters and berries are moderate in size. Jacquère B produces pale, light (delicate floral), lively (acid, but with pleasant freshness), oftentimes 'perlants' wines to be consumed quickly.
Clonal selection in France
The 5 approved Jacquère B clones carry the numbers 569, 658, 769, 788 and 923.
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.
- Ampélographie. P. Viala et V. Vermorel, 1902-1910, Ed. Masson, Paris.
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
569  Savoie  ENTAV  medium  medium  medium  
 1978  Savoie  medium    medium  
 0.14 ha  medium  medium    distinctive wines of the vine variety
658  Savoie  ENTAV  medium to high  medium to high  medium  
 1980  Savoie  medium    medium  
 0.10 ha  medium  medium    distinctive wines of the vine variety
769  Savoie  ENTAV  low to medium  medium  medium  
 1981  Savoie  medium    medium  
 0.10 ha  medium  medium to high    distinctive wines of the vine variety
788  Savoie  ENTAV  medium  medium to high  medium  
 1984  Savoie  medium to high    medium  
 0.10 ha  medium  low to medium    distinctive wines of the vine variety
923  Savoie  ENTAV  low to medium  medium  medium  
 1988  Savoie  medium    medium  
   medium      distinctive wines of the vine variety