Semillon B
Name of vine variety in France
Semillon
Origin
This variety is originally from the Bordeaux vineyards.
Synonymy
Ther is no officially recognized synonym for this variety in France. In Bulgaria, Semillon B can officially be called by the name "Seminon".
Regulations
In France, Semillon B is officially listed in the "Catalogue of vine varieties".

This vine variety is likewise listed in the Catalogues of other European Union member states: Bulgaria, Cyprus, Spain, Greece, Italy, Hungary, Portugal and the Czech Republic.
Use
Wine and eaux-de-vie vine variety
Evolution of area under vines in France
1958 1968 1979 1988 1998 2008 2016
ha 35993 34129 23340 17573 14969 12535 10537
Description
Identification signs include:
- the tips of the young shoot have a dense coat of flat-lying hairs,
- the young leaves are green with bronze patches,
- adult leaves are light to medium green, 5-lobed with an open or slightly open petiole sinus; short teeth compared to width at base, straight or convex sides; slight or very slight coloration of veins; slightly jagged leaf blade, very regularly bubbled and on the underside with a sparse coat of flat-lying hairs,
- round-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 234 239 172 188 248 240 233 239
Allel 2 131 236 257 182 194 252 248 243 271
Phenology
Bud burst: 5 days after Chasselas.
Grape maturity: period II, 2 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Semillon B has moderate vigor and is rather productive. This variety can be managed and trained moderately long or short pruned. It reacts particularly to the agronomic fertility of the soil. The yields vary enormously depending on the terroirs and would appear to be well adapted to gravely or clay-limestone soils.
Sensitivity to diseases and pests
Semillon B is sensitive to grey rot, black rot (on young leaves along with mites and leaf hoppers). On the other hand, it is not very sensitive to powdery mildew and phomopsis.
Technological potential
Grape clusters are moderate and berries large in size. Semillon B, under favorable growing conditions and with adult vines and managed yields, produces top quality dry white wine: full bodied with moderate to low acidity. These wines can be vinified in barrels and have ageing capacity. Semillon B also produces top white liqueur wines.
Clonal selection in France
the 7 approved Semillon B clones carry the numbers 173, 299, 315, 380, 908, 909 and 910. A conservatory with over 70 clones has been set up in the Bordeaux vineyards since 1990.
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
173  Gironde  ENTAV  medium  medium  medium to high  
 1972  Bordelais  medium      
 4.29 ha        balanced dry and liqueur wines
Steady clone
299  Gironde  ENTAV  medium to high  medium  medium  
 1973  Bordelais  medium      
 1.91 ha        distinctive wines of the vine variety
More compact grape clusters
315  Gironde  INRA  medium  medium  medium  
 1973  Bordelais  medium      
 5.91 ha        distinctive wines of the vine variety
380  Gironde  ENTAV  high  high  medium  
 1975  Bordelais  medium      
 0.10 ha        distinctive wines of the vine variety
908  Gironde  INRA  medium  medium to high  medium  
 1987  Bordelais  medium      
 1.14 ha        distinctive wines of the vine variety
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
909  Gironde  INRA  medium  medium  high  
 1987  Bordelais  medium      
 2.55 ha        distinctive wines of the vine variety
910  Dordogne  INRA  medium  medium  medium to high  
 1987  Bordelais  medium      
 1.35 ha        distinctive wines of the vine variety