Roussette d'Ayze B
Name of vine variety in France
Roussette d'Ayze
Origin
This vine variety is originally from the Haute-Savoie region.
Synonymy
Regulations
In France, Roussette d'Ayze B is officially listed in the "Catalogue of vine varieties".
Use
Wine vine variety
Evolution of area under vines in France
1958 1979 1988 1998 2008 2016
ha 6 3 20 1 1 1.2
Description
Identification signs include:
- the tip of the young shoot has a heavy coat of flat-lying hairs,
- the young leaves are green with bronze patches,
- adult leaves are small to moderate size, 3 or 5 lobes with a slightly open petiolar sinus or with slightly overlapping lobes, short to moderate compared to their width at base, size teeth with straight sides; absence of anthocyanin coloration of veins, jagged and bubbled leaf blade and the underside with a slight coat of upright hairs,
- elliptical-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 223 239 182 188 252 248 235 239
Allel 2 149 223 243 186 188 260 254 257 239
Phenology
Bud burst: 5 days after Chasselas.
Grape maturity: period I, 1 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Roussette d’Ayze B is fairly fertile when short pruned. This vine variety is well adapted to morain glacier soils.
Sensitivity to diseases and pests
Roussette d’Ayze B is susceptible to grey rot and downy mildew.
Technological potential
Grape clusters and berries are small to moderate in size. Roussette d’Ayze B produces average and not very aromatic wines. It is used for producing base wine for sparkling wine.
Clonal selection in France
The only approved Roussette d’Ayze B clone carries the number 940.
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
940  Haute-Savoie  ENTAV        
 1988  Haute-Savoie