Ondenc B
Name of vine variety in France
Ondenc B is originally from the south west of France.
In France, Ondenc B is officially listed in the "Catalogue of vine varieties".
Wine vine variety
Evolution of area under vines in France
1958 1968 1979 1988 2000 2008 2016
ha 1586 1191 160 22 12 11 19
Identification signs include:
- the tip of the young shoot has a very dense coat of flat-lying hairs,
- the young leaves are green,
- adult leaves are 3 or 5 lobes with a slightly open petiolar sinus or parallel edges, open lateral sinuses with a U-shaped base, short teeth compared to width at base with straight or convex sides; a low to moderate anthocyanin coloration of veins; a flat leaf blade and the underside with a moderate coat of upright and flat-lying hairs,
- elliptical-shaped berries.
Genetic profile
Allel 1 131 223 239 186 188 246 248 233 239
Allel 2 149 236 257 188 188 252 248 257 271
Bud burst: 1 day after Chasselas.
Grape maturity: period I, 1 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Ondenc B is vigorous and fertile and can be short-pruned. Its early bud burst makes it prone to spring frost. It is sometimes susceptible to  coulure and tend to alternate.
Sensitivity to diseases and pests
This vine variety is especially susceptible to grey rot and acid rot. It is also somewhat susceptible to downy and powdery mildew.
Technological potential
Grape clusters and berries are moderate in size. Ondenc B produces rather fine wines, but which are not very aromatic. Under favorable conditions and possibly following passerillage, it is possible to obtain liqueur wines due to its early character. Moreover, distilling these wines produces good quality eaux-de-vie.
Clonal selection in France
The 3 approved Ondenc B clones carry the numbers 674, 675 and 676. A conservatory with 20 clones was set up in 1998 in the Gaillac vineyards (Tarn).
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
674  Tarn  ENTAV  high  high  low  
 1980  Domaine de l'Espiguette
 medium to high    medium  
         distinctive wines of the vine variety
675  Tarn  ENTAV  medium  medium  medium  
 1980  Domaine de l'Espiguette
 medium    medium  
         distinctive wines of the vine variety
676  Tarn  ENTAV  medium  medium  medium  
 1980  Domaine de l'Espiguette
 medium    medium  
         distinctive wines of the vine variety