Mérille N
Name of vine variety in France
Mérille
Origin
This vine variety is originally from the South west of France (Tarn and Garonne).
Synonymy
No synonym is officially recognized in France for this variety, nor in other countries in the European Union.
Regulations
In France, Mérille N is officially listed in the "Catalogue of vine varieties".
Use
Wine vine variety
Evolution of area under vines in France
1958 1968 1979 1988 1998 2008 2016
ha 2422 2458 622 226 105 80 26
Description
Identification signs include:
- the tip of the young shoots has a very dense coat of flat-lying hairs
- the shoots have red internodes,
- adult leaves are dark green, 3 or 5 lobes with a moderate to heavy anthocyanin coloration of veins, strongly bubbled leaf blade, folded near the petiolar point, wavy between the principle veins, revolute and the underside with a moderate to heavy coat of upright and flat-lying hairs, 
- short elliptical-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 141 232 239 182 194 240 248 235 239
Allel 2 149 236 247 188 194 260 254 243 251
Phenology
Bud burst: 4 days after Chasselas.
Grape maturity: period II, 3 weeks after Chasselas.
Suitability for cultivation and agronomic production
Steady production. High yields when long-pruned.
Sensitivity to diseases and pests
This vine variety is not very prone to downy and powdery mildew. It is somewhat susceptible to grey rot and more so to mites, grape caterpillars and leaf hoppers.
Technological potential
Grape clusters are very large and the berries are large. Mérille N produces light  (low sugar potential) and rather ordinary wines.
Clonal selection in France
The 3 approved Mérille N clones carry the numbers 444, 445 and 790.
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.
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
444  Charente  ENTAV  medium to high  medium to high  medium  
 1976  Languedoc, domaine de l'Espiguette  medium to high    medium  
   medium      distinctive wines of the vine variety
445  Charente  ENTAV  medium to high  medium  medium  
 1976  Languedoc, domaine de l'Espiguette  low to medium    medium  
   low to medium      distinctive wines of the vine variety
790  Charente  ENTAV  low  medium  medium  
 1984  Languedoc, domaine de l'Espiguette  medium to high    medium  
   medium to high      distinctive wines of the vine variety