Meslier Saint-François B
Name of vine variety in France
Meslier Saint-François
Origin
This vine variety is originally from the west of and based on published genetic analyses is derived from the crossbreeding of Gouais B and Chenin B.
Synonymy
In France, this vine variety can officially be called  "Gros Meslier B" with regard to plant propagation material.
Regulations
In France, Meslier Saint-François B is officially listed in the "Catalogue of vine varieties".
Use
Wine and eaux-de-vie vine variety
Evolution of area under vines in France
1958 1968 1979 1988 2000 2008 2016
ha 2336 1851 589 221 60 30 8.7
Description
Identification signs include:
- the tips of the young shoots have a dense coat of flat-lying hairs, 
- green young leaves,
- shoots with red internodes,
- small to moderate size adult leaves, dark green, whole or with 5 lobes with shallow lateral sinuses with a U-shaped base, alightly open or closed petiolar sinus, teeth with convex sides, moderate anthocyanin coloration of veins; dark green leaf blade, thick, slightly upturned and jagged, bubbled and the underside with a moderate to heavy coat of flat lying hairs and a moderate coat of upright hairs, 
- round-shaped or short elliptical-shaped berries.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 229 239 172 188 238 238 227 271
Allel 2 131 232 239 176 196 248 240 233 271
Phenology
Bud burst: 3 days before Chasselas.
Grape maturity: period II, 3 weeks after Chasselas.
Suitability for cultivation and agronomic production
The early bud burst variety is susceptible to spring forst. Meslier Saint- François B is fertile but has low to moderate vigor.
Sensitivity to diseases and pests
This vine variety is not very susceptible to black-rot and downy mildew. It is however rather susceptible to powdery mildew and very susceptible to acid rot.
Technological potential
Grape clusters and berries are moderate in size. This vine variety produces not very alcoholic, rather flat and light wine. The eaux-de-vie made from this wine is fine and has aromas.
Clonal selection in France
There are no approved clones for this variety at the present time.
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.