Jacquère B
Name of the variety in France

Jacquère
Origin

This variety native to the Savoie region is, based on published genetic analyses, probably a descendant of Gouais blanc.
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, Jacquère is officially listed in the "Catalogue of vine varieties" on the A list and classified. This variety is also listed in the catalogue du Portugal.
Use

Wine grape variety.
Evolution of cultivated areas in France

1958 | 1968 | 1979 | 1988 | 1998 | 2008 | 2018 | |
---|---|---|---|---|---|---|---|
ha | 1362 | 1491 | 855 | 995 | 1104 | 1079 | 920 |
Descriptive elements

The identification is based on:
- the tip of the young shoot with a high density of prostrate hairs,
- the green young leaves with bronze spots,
- the adult leaves with three or five lobes, an open V-shaped petiole sinus, long teeth compared to their width at the base with straight sides, a moderate to strong anthocyanin coloration of veins, an involute leaf blade, and on the lower side of the leaves, a low density of prostrate hairs,
- the round-shaped berries.
- the tip of the young shoot with a high density of prostrate hairs,
- the green young leaves with bronze spots,
- the adult leaves with three or five lobes, an open V-shaped petiole sinus, long teeth compared to their width at the base with straight sides, a moderate to strong anthocyanin coloration of veins, an involute leaf blade, and on the lower side of the leaves, a low density of prostrate hairs,
- the round-shaped berries.
Genetic profile

Microsatellite | VVS2 | VVMD5 | VVMD7 | VVMD27 | VRZAG62 | VRZAG79 | VVMD25 | VVMD28 | VVMD32 |
---|---|---|---|---|---|---|---|---|---|
Allel 1 | 131 | 223 | 239 | 176 | 196 | 244 | 240 | 227 | 239 |
Allel 2 | 141 | 232 | 249 | 178 | 204 | 252 | 254 | 245 | 271 |
Phenology

Bud burst: 1 day after Chasselas.
Grape maturity: mid-season, 3 weeks after Chasselas.
Grape maturity: mid-season, 3 weeks after Chasselas.
Suitability for cultivation and agronomic production

Jacquère is fairly fertile, regularly productive with moderate vigor. It is better to pune it short. Jacquère is well adapted to clay-limestone and rocky scree terroirs.
Susceptibility to diseases and pests

This variety is susceptible to black rot and grey rot but is less sensitive to downy and powdery mildew.
Technological potentiality

The bunches and berries are medium in size. Jacquère produces wines that are pale, light (slightly floral), lively (acidic, but with pleasant freshness), often with a sparkling note. These wines need to be consumed quickly.
Clonal selection in France

The five certified Jacquère clones carry the numbers 569, 658, 769, 788 and 923. A conservatory of more than 70 clones was planted in the French department of Savoie in 2015.
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 - Institut Agro | Montpellier, Marseillan, France.
- Dictionnaire encyclopédique des cépages et de leurs synonymes. P. Galet, 2015, Ed. Libre&Solidaire, France.
- Traité général de viticulture, Ampélographie. P. Viala and V. Vermorel, 1901-1909, Ed. Masson, Paris, France.
- Documentary collections of the Centre de Ressources Biologiques de la Vigne de Vassal-Montpellier, INRAE - Institut Agro | Montpellier, Marseillan, France.
- Dictionnaire encyclopédique des cépages et de leurs synonymes. P. Galet, 2015, Ed. Libre&Solidaire, France.
- Traité général de viticulture, Ampélographie. P. Viala and V. Vermorel, 1901-1909, Ed. Masson, Paris, France.
Description of clones certified in France
