Grolleau gris G
Name of vine variety in France
Grolleau gris
Origin
This vine variety corresponds to the grey mutation of Grolleau N.
Synonymy
No synonym is officially recognized in France for this variety, nor in other countries in the European Union.
Regulations
In France, Grolleau gris G is officially listed in the "Catalogue of vine varieties".
Use
Wine vine variety.
Evolution of area under vines in France
1958 1968 1979 1988 2000 2008 2016
ha 19 11 225 358 908 472 502
Description
The description corresponds to Grolleau N except the skin color of the berries when ripe is, in this case, grey.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 236 247 172 204 244 240 243 239
Allel 2 141 238 249 178 204 252 254 245 271
Phenology
Bud burst: 1 day after Chasselas.
Grape maturity: period II, 3 weeks after Chasselas.
Suitability for cultivation and agronomic production
This variety can by managed by short pruning.
Sensitivity to diseases and pests
Grolleau gris G is susceptible to grey rot.
Technological potential
The grape clusters and berries are small to moderate in size. This variety produces good results for making rosé wine or gris wines and sparkling wine.
Clonal selection in France
The 3 approved Grolleau gris G clones carry the numbers: 1118,1135 and 1136. A conservatory of 15 or so clones was set up in the Val de Loire in 1996.
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 2. 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
1118  Maine-et-Loire  IFV  medium  medium  medium to high  
 2008  Val de Loire  medium to low    medium to low  
       medium  wines appreciated for their taste characteristics notably in terms of roundness and finish
Clone appreciated for its moderate production level and its organoleptic qualities
1135  Maine-et-Loire  IFV  medium to high  medium  medium  
 2009  Val de Loire  medium    medium  
       medium  wines appreciated notably for their olfactory quality profile
1136  Maine-et-Loire  IFV  medium to low  medium  medium to high  
 2009  Val de Loire  medium    medium to high  
       medium to high  wines appreciated notably for their olfactory quality profile
Clone can likewise be suitable for the production of grape juice