Saint-Côme B
Name of the variety in France
Saint-Côme
Origin
This variety is native to the Aveyron region and, based on published genetic analyses, it is probably a descendant of Gouais blanc and Moural.
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, Saint-Côme 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
2018
ha 3.3
Descriptive elements
The identification is based on:
- the tip of the young shoot with a high density of prostate hairs,
- the yellow young leaves with bronze spots,
- the shoots with a strong anthocyanin coloration,
- the circular adult leaves, with five lobes, round-shaped lateral sinuses, a slightly open V-shaped petiole sinus or with slightly overlapping lobes, medium teeth compared to their width at the base with straight or convex sides, a moderate anthocyanin coloration of veins, a roughly blistered, slightly revolute and goffered leaf blade, and on the lower side of the leaves, a medium density of erect and prostate hairs on the blade and a high density of erect hairs on the veins,
- the round-shaped berries with a significant bloom.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 236 247 172 204 238 238 227 239
Allel 2 137 238 249 176 204 248 238 243 249
Phenology
Bud burst: 1 day before Chasselas.
Grape maturity: early-season, 1 week after Chasselas.
Suitability for cultivation and agronomic production
Saint-Côme is not very fertile and seems more adapted to long pruning.
Susceptibility to diseases and pests
As its grape clusters are compact, Saint-Côme is a little susceptible to grey rot. It does not seem particularly sensitive to other fungus diseases.
Technological potentiality
The bunches are small to medium and the berries are medium in size. The sugar potential of Saint-Côme is good. This variety produces white wines with high acidity.
Clonal selection in France
The only certified Saint-Côme clone carries the number 1298. A conservatory of 3 clones was planted in 2005 in the French department of Aveyron.
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.
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
1298 Tarn IFV 2018