Trousseau N
Name of vine variety in France
Trousseau
Origin
This vine variety is originally from the Jura region and based on genetic analyses carried out in Montpellier, is probably a descendant of Savagnin B.
Synonymy
There are no officially recognized synonyms for this vine variety in France.In the European Union, Trousseau N can officiially be called by other names: Bastardo (Portugal, Cyprus), Merenzao (Spain), María Ordoña (Spain).
Regulations
In France, Trousseau 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: Cyprus, Spain and Portugal.
Use
Wine vine variety
Evolution of area under vines in France
1958 1968 1979 1988 1998 2008 2016
ha 166 143 76 85 139 165 177
Description
Identification signs include:
- the tip of the young shoot has a dense coat of flat-lying hairs,
- orbicular-shaped adult leaves, 5 lobes, with a slightly open petiolar sinus or with slightly overlapping lobes with opposing edges towards the underside, shallow lateral sinuses, short teeth with convex sides, an absence or slight anthocyanin coloration os veins, a jagged leaf blade, slightly cupped, folded toward the petiole point, very bubbled and the underside with a slight to moderate coat of flat-lying hairs,
- elliptical-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 141 236 239 172 188 246 248 233 239
Allel 2 149 236 257 186 188 248 254 247 255
Phenology
Bud burst: 2 days after Chasselas.
Grape maturity: period I, 1 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
Trousseau N is a vigorous vine variety which must be planted in well exposed terroirs to reach proper maturity. Short or long pruning fares well based on climatic conditions.
Sensitivity to diseases and pests
Trousseau N is fairly susceptible to diseases, particularly to grey rot.
Technological potential
Grape clusters are small and the berries are moderate size. Trousseau N produces characteristic, warm, strong and full bodied, but not with a deep color if the yields are high. This grape variety has high sugar accumulation potential.
Clonal selection in France
The 5 approved Trousseau N clones carry the numbers 1004, 1017, 1021, 1026 and 1114.
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
1004  Jura  ENTAV    medium  medium to high  
 1993  Jura        medium to high
 0.11 ha        colorful, balanced wines, distinctive of the vine variety
Clone appreciated for the quality of the wines produced
1017  Jura  ENTAV    medium  medium to high  
 1998  Jura        
 0.06 ha        distinctive wines of the vine variety
1021  Jura  ENTAV    medium to high  medium  
 1994  Jura        
 0.05 ha    high    balanced and distinctive of the vine variety wines
Yield needs to be controlled
1026  Jura  ENTAV    medium  medium to high  
 1995  Jura        
 0.08 ha        distinctive wines of the vine variety
Steady production clone
1114  Jura  Société de Viticulture Jura - IFV    low  medium to high  medium to high
 2007  Jura  low    medium  medium to high
     weak    refined, colorful, tannic and balanced wines. Suited to the production of wines with ageing potential.
This Trousseau varietal type is locally called "à la dame"
This quality clone is moderately productive with proper maturity. It produces wines appreciated in wine tastings and wines with good ageing potential. It is also less susceptible to grey rot due to loose grape clusters prone to coulure and to millerandage.