Portan N
Name of the variety in France
Portan
Origin
This variety obtained by INRA in 1958 is the result of the crossbreeding between Grenache and Portugais bleu.
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, Portan is officially listed in the "Catalogue of vine varieties" on the A list and classified.
Use
Wine grape variety.
Evolution of cultivated areas in France
1988 1998 2008 2018
ha 224 240 369 98
Descriptive elements
The identification is based on:
- the tip of the young shoot with a low density of prostate hairs,
- the green young leaves,
- the pentagonal leaves with five lobes, shallow lateral sinuses, a petiole sinus with overlapping lobes, medium teeth with convex or straight sides, no anthocyanin coloration of veins, a twisted, goffered and blistered leaf blade, and on the lower side of the leaves, no or a very low density of erect and prostate hairs,
- the round-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 141 223 239 191 188 250 240 227 249
Allel 2 143 238 243 191 188 258 248 243 271
Phenology
Bud burst: 1 day before Chasselas.
Grape maturity: early-season, half a week after Chasselas.
Suitability for cultivation and agronomic production
Portan is very vigorous. This variety must be trellised and preferably pruned long. It is suited to moderately or not very fertile soils.
Susceptibility to diseases and pests
Portan is susceptible to powdery mildew and phomopsis. However, as it is an early variety, it is not very sensitive to grey rot.
Technological potentiality
The bunches and berries are medium in size. Due to its earliness and its characteristics, Portan can be used to make primeur wines or wines to be consumed quickly. This variety produces not very tannic, well colored and fruity wines that have moderate alcohol degree.
Clonal selection in France
The only certified Portan clone carries the number 537.
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.
Description of clones certified in France
Identity and availability Agronomic data Technological data Autres informations
Clone no. Marque Origin Selection Year of
certification
Agronomic
references
Surface area used
for propagation (year)
Fertility Production
level
Bunch
weight
Vigor Berry
size
Susceptibility
to grey rot
Sugar
level
Color
potential
Titrable
acidity
Tannic
structure
Aromatic
intensity
Oenological
suitability
New General
note
Agro-tecnic
note
Note
agronomique
Agronomic
note
Links
537 INRA 1976 Languedoc