Jurançon blanc B
Name of the variety in France
Jurançon blanc
Origin
This variety is originally from the south west of France. Although close, it is not the white form of Jurançon noir. Based on genetic analyses carried out in Montpellier, Jurançon blanc would be the result of crossbreeding Folle blanche and Pruéras.
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, Jurançon blanc is officially listed in the "Catalogue of vine varieties" on the A list and classified.
Use
Wine and spirits grape variety.
Evolution of cultivated areas in France
1958 1968 1979 1988 2000 2008 2018
ha 5755 1968 641 137 21 12 4.6
Descriptive elements
The identification is based on:
- the tip of the young shoot with a high density of prostate hairs,
- the circular adult leaves, with five lobes, open U-shapped lateral sinuses, a slightly open petiole sinus or with slightly overlapping lobes, short teeth compared to their width at the base with straight sides, a low to moderate anthocyanin coloration of veins, and on the lower side of the leaves, a low to medium density of erect and prostate hairs,
- the round-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 223 239 176 186 244 238 245 239
Allel 2 149 232 239 178 196 256 248 267 271
Phenology
Bud burst: 7 days after Chasselas.
Grape maturity: mid-season, 3 weeks and a half after Chasselas.
Suitability for cultivation and agronomic production
Jurançon blanc has a moderate vigor, a very erect bearing and can be pruned short.
Susceptibility to diseases and pests
Jurançon blanc is very susceptible to downy mildew and grey rot.
Technological potentiality
The bunches are small and the berries are medium in size. Jurançon blanc produces low quality, acidic wines with a low alcohol degree. The spirits produced from the wines of this variety are average in quality and not very aromatic.
Clonal selection in France
There is no certified clone for this variety yet.
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.
- Dictionnaire encyclopédique des cépages et de leurs synonymes. P. Galet, 2015, Ed. Libre&Solidaire, France.