Ugni blanc B
Name of vine variety in France
Ugni blanc
Origin
This variety is originally from Italy (Tuscany) where it is grown under the name Trebbiano toscano.
Synonymy
There is no officially recognized synonym for this variety in France.In the European Union, Ugni blanc B is officially called by other names: Biancame (Italy), Bianchello (Italy), Procanico (Italy), Talia (Portugal), Trebbiano (Cyprus, Greece, Malta), Trebbiano toscano B (Italy) and Yuni blan (Bulgaria).
Regulations
In France, Ugni blanc 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, Malta, Portugal and Italy.
Use
Wine and eaux-de-vie grape variety
Evolution of area under vines in France
1958 1968 1979 1988 1998 2008 2016
ha 62399 93762 127468 102973 96740 83182 85158
Description
Identification signs include:
- the tips of the young shoots have a very dense coat of flat-lying hairs,
- the young leaves are yellow,
- shoots with erased or flattened nodes,
- adult leaves are large, not uniform light green, whole, 3 or 5-lobed with a slightly open petiole sinus or with overlapping lobes; moderate to long teeth with straight or convex sides; absence of anthocyanin coloration of veins; jagged leaf blade, involute on edges, slightly cupped, bubbled and the underside with a moderate coat of flat-lying hairs,
- very long grape clusters, foxtail-shaped and sometimes fasciated on the tips,
- round-shaped berries with skin that can become slightly pink when over ripe.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 223 249 176 194 246 240 243 249
Allel 2 141 229 253 180 200 252 254 247 271
Phenology
Bud burst: 9 days after Chasselas.
Grape maturity: period II, 3 and 1/2 weeks to 4 weeks after Chasselas.
Suitability for cultivation and agronomic production
Ugni blanc B is very vigorous and is well adapted to training modes and varied pruning systems in addition to varying growing and terroir conditions (wide spread geographic and growing zone). It is preferable to trellis this variety as it can be somewhat sensitive to wind.
Sensitivity to diseases and pests
Ugni blanc B is sensitive to downy mildew and phomopsis. It is likewise very sensitive to Meloidogyne when it is grown in sand. On the other hand, it is just slightly sensitive to phomopsis and grey rot on the grape clusters.
Technological potential
The grape clusters are very large while the berries are small to moderate size. Depending on production conditions, Ugni blanc B can be used to produce dry white wines, relatively neutral but balanced. It can also be used to make wine capable of being used to produce good quality eaux-de-vie.
Clonal selection in France
The 11 approved Ugni blanc B clones carry the numbers 384, 478, 479, 480, 481, 482, 483, 484, 485, 486, 638. A conservatory of this variety is in the process of being set up in vineyards in Cognac; the first part was planted in 2006, and includes over 400 clones.
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
384  Charente  ENTAV    medium to high    
 1975  Gers    high    
 6.66 ha        
478  Charente  ENTAV        
 1976  Gers        
 2.11 ha        
Increased spreading growth
479  Charente  INRA        
 1976  Charente        
 26.36 ha        
480  Charente  INRA        
 1976  Charente        
 3.08 ha        
481  Charente  INRA    medium to high    
 1976  Charente        
 3.59 ha        
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
482  Charente  INRA        
 1976  Charente
Gers
       
 5.10 ha        
483  Charente  INRA    medium    
 1976  Charente
Gers
       
 7.05ha        
484  Charente  INRA        
 1976  Charente        
 2.20 ha        
485  Charente  INRA        
 1976  Charente        
 6.72 ha        
486  Charente  INRA        
 1976  Charente        
 5.89 ha        
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
638  Charente  ENTAV    medium to high    
 1979  Gers        
 0.34 ha