Ravat blanc B
Name of vine variety in France
Ravat blanc
Origin
Ravat blanc B or Ravat 6 (interspecific hybrid) is derived from the crossbreeding of 8724 Seibel and Chardonnay B.
Synonymy
In France, this variety can officially be called "Ravat 6" for plant propagating material.
Regulations
In France, Ravat blanc B is officially listed in the "Catalogue of vine varieties".
Use
Wine vine variety
Evolution of area under vines in France
1958 1968 1979 2000 2008 2016
ha 600 567 1 21 15 5.5
Description
Identification signs include:
- the tip of the new shoot has a slight coat of flat-lying hairs,
- the young leaves are shiny green,
- adult leaves are kidney-shaped, whole or 3 lobes with a U-shaped or very open V-shaped petiolar sinus, moderate size teeth with straight or convex sides, low anthocyanin coloration of veins, a shiny leaf blade and the underside with an absence of very slight coat of upright and flat-lying hairs,
- round-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 223 239 182 188 250 240 237 249
Allel 2 147 261 243 184 188 260 254 251 249
Phenology
Bud burst: 2 days after Chasselas.
Grape maturity: period II, 2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Ravat blanc B is not very fertile and grows semi-erect and must be long pruned.
Sensitivity to diseases and pests
Ravat blanc B resists well against downy mildew but is very sensitive to powdery mildew, anthracnosis and grey rot. It must also be grafted.
Technological potential
Grape clusters are small. The berries are likewise small and can become pink at maturity. The sugar potential of Ravat blanc B is good but the wines produced are sensitive to oxidation and are of mediocre quality.
Clonal selection in France
The only approved Ravat blanc B clone carries the number 1198.
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, 1988, 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
1198  Hérault  IFV - INRA        
 2013  Languedoc-Roussillon        
         distinctive wines of the vine variety