Roublot B
Name of vine variety in France
Roublot
Origin
This vine variety is originally from the Yonne region and based on  published genetic analyses, is derived from the crossbreeding of  Pinot and Gouais B.
Synonymy
Regulations
In France, Roublot B is officially listed in the "Catalogue of vine varieties".
Use
Wine vine variety
Evolution of area under vines in France
2016
ha 0
Description
Identification signs include:
- the tip of the young shoot has a moderate coat of flat-lying hairs,
- the young leaves are yellow with bronze patches,
- adult leaves have 5 or 7 lobes (central lobe is divided) with a slightly open or with slightly overlapping lobes, moderate to long teeth compared to width at base, straight sides, moderate anthocyanin coloration of veins; a jagged leaf blade, revolute and bubbled and the underside with a moderate coat of upright hairs,
- short elliptical-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 225 239 178 194 240 238 216 249
Allel 2 135 238 239 182 196 244 238 245 271
Phenology
Bud burst: same as Chasselas.
Grape maturity: period I, 1 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Roublot B grows semi erect. Good but irregular fertility which is why it must be long pruned.
Sensitivity to diseases and pests
Roublot B is susceptible to powdery mildew and grey rot.
Technological potential
Grape clusters and berries are small. Roublot B produces white wines with a deep yellow color, which are however fine with certain aromatic characteristics.
Clonal selection in France
There are no approved clones for this vine variety at the present time.
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 1. P. Galet, 1990, Ed. Dehan, Montpellier.
- Ampélographie. P. Viala et V. Vermorel, 1902-1910, Ed. Masson, Paris.