Muscadelle B
Name of vine variety in France
This vine variety is probably originally from the south west of France. There are trace levels of this variety in the center of France  (Cher). Based on published genetic analyses, it seemingly a descendant of Gouais B.
In France, Muscadelle B is officially listed in the "Catalogue of vine varieties".

This vine variety is likewise listed in the Catalogue of Romania.
Wine vine variety
Evolution of area under vines in France
1958 1968 1979 1988 1998 2008 2016
ha 6257 5720 3710 2763 2151 1713 1456
Identification signs include:
- the tip of the young shoot has a heavy coat of flat-lying hairs,
- the young leaves are green with bronze patches,
- adult leaves are wedge-shaped, whole or with 3 lobes and an open U-shaped petiolar sinus; long teeth compared to width at base, straight sides, low anthocyanin coloration of veins, an upturned leaf blade and the underside with a moderate coat of flat-lying hairs, 
- round-shaped berries.
Genetic profile
Allel 1 137 223 239 176 188 238 238 245 261
Allel 2 141 232 239 182 196 252 254 247 271
Bud burst: 11 days after Chasselas.
Grape maturity: period II, 2 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
This vigorous vine variety must be carefully trained and plants on well exposed land plots in order to limit the risk of grey rot.
Sensitivity to diseases and pests
Muscadelle B is susceptible to powdery mildew, wasps, grape caterpillars and very susceptible to grey rot.
Technological potential
Grape clusters and berries are moderate in size. Once maturity has been reached, Muscadelle B can produce moderately alcoholic, not very acid and slightly aromatic wines. These wines can sometimes be sensitive to oxidation.
Clonal selection in France
The 3 approved Muscadelle B clones carry the numbers 610, 1216 and 1217. A conservatory of approximately 90 clones was set up in Bergeracois (Dordogne) in 1996.
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 1. 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
610  Gironde  INRA  medium to high  high  medium  
 1979  Bordelais  high    medium  
 3.09 ha    medium    distinctive wines of the vine variety
1216  Dordogne  CA 24 - IFV  medium to low  medium to low  high  
 2014  Sud-Ouest  medium    medium  
     medium  high  Well balanced sweet wines with high aromatic intensity
Clone adapted to the production of sweet wines with high intensity noble rot. Sought-after for wine tasting.
1217  Dordogne  CA 24 - IFV  medium  medium  medium to high  
 2014  Sud-Ouest  medium to high    medium  
     medium  medium to high  Sweet wines with high taste quality
Clone adapted to making sweet wines with moderate to high noble rot intensity. Sought-after for wine tasting.