Portugais bleu N
Name of vine variety in France
Portugais bleu
Origin
This vine variety would appear to originally be from Austria.
Synonymy
There are no officially recognized synonyms in France for this variety.In the European Union, Portugais bleu N can officially be called by other names: Blauer Portugieser (Germany, Austria, Italy, Czech Republic), Kékoportó (Hungary), Modry Portugal (Czech Republic, Slovakia), Portugieser Blau (Czech Republic), Oporto (Romania), Portoghese N. (Italy), Portugieser (Italy), Portugalka (Slovenia), Portugiezer N (Netherlands) and Português Azul (Portugal).
Regulations
In France, Portugais bleu N is officially listed in the "Catalogue of vine varieties".

This vine variety is likewise listed in the Catalogues of other European Union member states: Germany, Austria, Italy, Hungary, Netherlands, Portugal, Czech Republic, Romania, Slovakia and Slovenia.
Use
Wine vine variety
Evolution of area under vines in France
1958 1968 1988 1998 2008 2016
ha 1042 1040 945 270 87 14
Description
Identification signs include:
- the tip fo the young shoot has a sparse coat of flat-lying hairs,
- green young leaves with slightly bronze patches,
- whole adult leaves, 3 or 5 lobes with a slightly open petiolar sinus or with slightly overlapping lobes; shallow lateral sinues, moderate teeth with convex sides; an absence of anthocyanin coloration of veins, a thin fragile leaf blade, jagged, upturned, occasionally cupped, shiny, uniform and the underside with an absence of upright and flat-lying hairs,
- round-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 141 223 243 178 188 250 248 227 251
Allel 2 149 229 255 191 204 260 248 259 271
Phenology
Bud burst: 8 days after Chasselas.Grape maturity: period I, 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Portugais bleu N is a very early vine variety, vigorous and particularly wind sensitive. It is adapted to cool climate zones. Portugais bleu N is nevertheless fairly sensitive to winter cold and its early bud burst exposes it to spring frost. It is suited to sandy soil and fairly dry and poor terroirs.
Sensitivity to diseases and pests
Portugais bleu N is susceptible to downy mildew, powdery mildew and grey rot.
Technological potential
Grape clusters are moderate size and the berries are large. Portugais bleu N wine is not very tannic, not very acid and rather colored. The wine produced should be consumed quickly or as a primeur.
Clonal selection in France
The only approved Portugais bleu N clone carries the number 939. A conservatory of 40 clones was set up in 2000 in the Auvergne region (Massif Central).
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
939  Tarn  ENTAV        
 1988  Rhône
Tarn
       
         
Clone conforms to variety characteristics