Centennial seedless B
Name of vine variety in France
Centennial seedless
Origin
This variety was obtained in 1966 by Harold P. Olmo (California) by crossbredding Gold B and Q 25-6 (F2 Emperor x Sultana moscata B).
Synonymy
There is no officially recognized synonym in France nor in other countries in the European Union. 
Regulations
In France, Centennial seedless B is officially listed in the "Catalogue of vine varieties".This variety is likewise listed in the Catalogues of other European Union member states: Spain, Italy and Portugal
Use
Table grape variety
Evolution of area under vines in France
2000 2008 2016
ha 2 10 8.8
Description
Identification signs include:
- the tips of the young shoots are sparsely to moderately covered with flat-lying hairs,
- young reddish-colored leaves,
- heart-shaped or orbicular-shaped adult leaves, 5-,7- or more than 7-lobed with a U-shaped petiolar sinus, slightly open, large and long teeth compared to the base width, straight sides, medium to heavy anthocyanin pigmentation of veins, involute leafblades and the underside with almost no to very sparsely covered with flat-lying hairs and slight cover of erect hairs.
- Long elliptical shaped or occasionally arched berries with a simple or slightly aromatic flavor
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 133 234 239 176 188 248 238 216 263
Allel 2 133 236 239 191 188 256 254 235 271
Phenology
Bud burst: 2 days after Chasselas.
Grape maturity: period I, 1 and 1/2 weeks after Chasselas
Suitability for cultivation and agronomic production
Centennial seedless B is very vigorous  and grow semi-erect horizontally. It must be trelissed and trained with long pruning. 
Sensitivity to diseases and pests
Centennial seedless B is slightly susceptible to grey rot
Technological potential
Centennial seedless B grape clusters are large to very large and moderately compact. The berries are seedless, large with a fairly thin skin, firm pulp and a very pleasant flavor. Leaves should be moderately thinned because the berries are a little sensitive to browning. Under certain conditions, after harvest, the stalks wither quickly and the berries have a tendency to shatter. The grapes have a moderate storage and transportation capacity.
Clonal selection in France
The only approved Centennial seedless B clone carries the number 1087
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
1087  Non précisée  ENTAV        
 2004  Provence, Sud-Ouest        
         
Clone conforms to variety characteristics