Merlot blanc B
Name of the variety in France
Merlot blanc
Origin
This variety was developped in the Bordeaux region vineyards. Based on genetic analyses carried out in Montpellier, Merlot blanc would be the result of crossbreeding Folle blanche and Merlot.
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, Merlot blanc 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
1958 1968 1979 1988 1998 2008 2018
ha 5275 3662 1905 766 116 71 24
Descriptive elements
The identification is based on:
- the tip of the young shoot with a high density of prostate hairs,
- the green young leaves,
- the circular adult leaves, with five or seven lobes, deep lateral sinuses, an open U-shaped petiole sinus, long teeth compared to their width at the base with straight sides, no anthocyanin coloration of veins, an involute blistered leaf blade, 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 1 149 223 239 186 194 252 248 227 239
Allel 2 149 234 247 188 196 260 248 245 271
Phenology
Bud burst: 2 days after Chasselas.
Grape maturity: mid-season, 3 weeks after Chasselas.
Suitability for cultivation and agronomic production
Merlot blanc is very fertile, productive and regular. It is susceptible to drought.
Susceptibility to diseases and pests
Merlot blanc is very susceptible to grey rot. When ungrafted in the sands, it is heavily affected by root-knot nematodes.
Technological potentiality
The bunches are medium in size and the berries are small. Merlot blanc produces relatively neutral and average quality wines.
Clonal selection in France
The only certified Merlot blanc clone carries the number 1182.
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
1182 Domaine de Vassal INRA - IFV 2012 representative wines of the variety