Canner seedless B
Name of vine variety in France
Canner seedless
Origin
This variety was obtained in 1931 by Harold P. Olmo (California) by crossbreeding Hunisa N and Sultanine B.
Synonymy
No synonym is officially recognized in France for this variety.In Italy, Canner seedless B can officially be called by the name "Canner".
Regulations
In France, Canner seedless B is officially listed in the "Catalogue of vine varieties".
This variety is likewise listed in the Catalogue of Italy.
Use
Grape variety for canning
Evolution of area under vines in France
2000 2016
ha 5 0
Description
Identification signs include:
- the tip of the young shoots has a slight coat of flat-lying hairs, 
- the young leaves are green with bronze or reddish patches,
- adult leaves are orbicular-shaped and small in size, 5 lobes with a slightly open petiolar sinus, small to ùmoderate size teeth with convex sides, moderate anthocyanin pigmentation of veins, an upturned leaf blade, shiny, finely bubbled and the underside with an absence or very slight coat of upright and flat-lying hairs, 
- long elliptical-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 141 229 239 191 188 258 246 216 249
Allel 2 149 232 239 191 188 262 248 243 273
Phenology
Bud burst: 1 day before Chasselas. Grape maturity: period III, 4 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Canner seedless B has moderate to strong vigor and grows semi-erect to horizontal. It must be trained and long pruned.
Sensitivity to diseases and pests
Canner seedless B is somewhat susceptible to powdery mildew, downy mildew and to excoriosis.
Technological potential
Canner seedless B grape clusters are large and moderately compact. The berries are seedless, moderate in size, simple flavored with a moderately thick skin and firm pulp.
Clonal selection in France
The only approved Canner seedless B clone carries the number 975.
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.
- Dictionnaire encyclopédique des cépages. P. Galet, 2000, Ed. Hachette, 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
975  Gard  ENTAV        
 1990          
         
Clone conforms to variety characteristics