Roussette d'Ayze B
Name of the variety in France
Roussette d'Ayze
Origin
This variety is originally from the Haute-Savoie region.
Synonyms
There is no officially recognized synonym in France nor in the other countries of the European Union, for this variety.
Legal information
In France, Roussette d'Ayze is officially listed in the "Catalogue of vine varieties" on the A list and classified.
Use
Wine grape variety.
Evolution of cultivated areas in France
1958 1979 1988 1998 2008 2018
ha 6 3 20 1 1 1.2
Descriptive elements
The identification is based on:
- the tip of the young shoot with a high density of prostate hairs,
- the green young leaves with bronze spots,
- the small to medium adult leaves, with three or five lobes, a slightly open petiole sinus or with slightly overlapping lobes, short to medium teeth compared to their width at the base with straight sides, no anthocyanin coloration of veins, a twisted blistered leaf blade, and on the lower side of the leaves, a low density of erect hairs,
- the ellipsoid 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: early-season, 1 week and a half after Chasselas.
Suitability for cultivation and agronomic production
Roussette d’Ayze is fairly fertile when pruned short. This variety is well adapted to glacial morain soils.
Susceptibility to diseases and pests
Roussette d’Ayze is susceptible to grey rot and downy mildew.
Technological potentiality
The bunches and berries are small to medium in size. Roussette d’Ayze produces average and not very aromatic wines. It is used for the production of base wines for sparkling wines.
Clonal selection in France
The only certified Roussette d’Ayze 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, France.
- Documentary collections of the Centre de Ressources Biologiques de la Vigne de Vassal-Montpellier, INRAE - Montpellier SupAgro, Marseillan, France.
- Dictionnaire encyclopédique des cépages et de leurs synonymes. P. Galet, 2015, Ed. Libre&Solidaire, France.
- Traité général de viticulture, Ampélographie. P. Viala and V. Vermorel, 1901-1909, Ed. Masson, Paris, France.
Description of clones certified in France
Identity and availability Agronomic data Technological data Autres informations
Clone no. Marque Origin Selection Year of
certification
Agronomic
references
Surface area used
for propagation (year)
Fertility Production
level
Bunch
weight
Vigor Berry
size
Susceptibility
to grey rot
Sugar
level
Color
potential
Titrable
acidity
Tannic
structure
Aromatic
intensity
Oenological
suitability
New General
note
Agro-tecnic
note
Note
agronomique
Agronomic
note
Links
940 Haute-Savoie ENTAV 1988 Haute-Savoie