Müller-Thurgau B
Name of vine variety in France
Müller-Thurgau
Origin
Based on published genetic analyses, this variety was obtained in 1882 by Hermann Müller in Germany and is the result of the crossbreeding between Riesling B and Madeleine royale B.
Synonymy
There is no officially recognized synonym for this variety in France. In the European Union, Müller-Thurgau B can officially be called by other names: Rivaner (Germany, Austria, Belgium, Luxemburg, Czech Republic, United Kingdom), "Riesling x Silvaner" (Italy), Rizlingszilváni (Hungary) and Rizvanec (Slovenia).
Regulations
In France, Müller-Thurgau 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: Germany, Austria, Belgium, Bulgaria, Cyprus, Great Britain, Hungary, Italy, Luxemburg, Portugal, Czech Republic, Slovakia and Slovenia.
Use
Wine vine variety
Evolution of area under vines in France
1958 1968 1979 1988 2000 2008 2016
ha 57 59 60 12 4 5 20
Description
Identification signs include:
- the tips of the young shoot have a moderate coat of flat-lying hairs,
- adult leaves are moderate size, orbicular,  5-lobed, with a slightly open or closed petiole sinus, the bottom is oftentimes limited by the vein near the petiole point; U-shaped deep lateral sinuses, straight sided teeth; absence of anthocyanin coloration of veins; jagged leaf blade, slightly cupped and the underside with a sparse coat of upright hairs,
- eliptical-shaped berries, simple or slightly aromatic flavor.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 141 223 247 178 194 244 248 233 251
Allel 2 149 225 257 178 194 246 254 243 251
Phenology
Bud burst: 1 days after Chasselas.
Grape maturity: period I, 1 week after Chasselas.
Suitability for cultivation and agronomic production
Müller-Thurgau B is rather vigorous and is sensitive to chlorosis. It is preferable to plant this variety in sufficiently rich soil. Its very short cycle makes this variety well suited for northern or mountain areas, cold and limit from a climatic view point. Needless to say, its resistance to winter cold is moderate.
Sensitivity to diseases and pests
Müller-Thurgau B is sensitive to downy mildew and grey rot.
Technological potential
The grape clusters and berries are small or small to moderate size. Müller-Thurgau B can produce aromatic wine, rather alcoholic, but not very acidic, sometimes heavy and lacking finesse.
Clonal selection in France
The 7 approved Müller-Thurgau B clones carry the numbers 644, 645, 646, 647, 648, 649 and 650.
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
644  Non précisée  INRA  medium  medium  medium  
 1980  Alsace  medium      
         distinctive wines of the vine variety
645  Non précisée  INRA  medium  medium  medium  
 1980  Alsace  medium      
         distinctive wines of the vine variety
646  Non précisée  INRA  medium  medium  medium  
 1980  Alsace  medium      
         distinctive wines of the vine variety
647  Non précisée  INRA  medium  medium  medium  
 1980  Alsace  medium      
         distinctive wines of the vine variety
648  Non précisée  INRA  medium  medium  medium  
 1980  Alsace  medium      
         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
649  Non précisée  INRA  medium  medium  medium  
 1980  Alsace  medium      
         distinctive wines of the vine variety
650  Non précisée  INRA  medium  medium  medium  
 1980  Alsace  medium      
         distinctive wines of the vine variety