Chasan B
Name of vine variety in France

Chasan
Origin

This variety was obtained by INRA in 1958. Based on genetic analyses carried out in Montpellier, this variety is derived from the crossbreeding of Listan B and Pinot.
Synonymy

There is no officially recognized synonym in France nor in other countries in the European Union.
Regulations

In France, Chasan B is officially listed in the "Catalogue of vine varieties".This variety is likewise listed in the Catalogue of Spain.
Use

Wine grape variety
Evolution of area under vines in France

1988 | 2000 | 2008 | 2016 | |
---|---|---|---|---|
ha | 238 | 1058 | 960 | 457 |
Description

Identification signs include:
- the end of the young shoot is sparsely covered with flat-lying hairs, the young leaves are yellow, - the herbaceous shoot with red-color internodes,
- orbicular adult leaves are 7-lobed or more with an open petiolar sinus, U-shaped deep lateral sinus, medium teeth with straight sides, no anthocyanin pigmentation of veins and the underside is moderately covered with erect hairs.
- round-shaped berries
- the end of the young shoot is sparsely covered with flat-lying hairs, the young leaves are yellow, - the herbaceous shoot with red-color internodes,
- orbicular adult leaves are 7-lobed or more with an open petiolar sinus, U-shaped deep lateral sinus, medium teeth with straight sides, no anthocyanin pigmentation of veins and the underside is moderately covered with erect hairs.
- round-shaped berries
Genetic profile

Microsatellite | VVS2 | VVMD5 | VVMD7 | VVMD27 | VRZAG62 | VRZAG79 | VVMD25 | VVMD28 | VVMD32 |
---|---|---|---|---|---|---|---|---|---|
Allel 1 | 143 | 225 | 239 | 182 | 194 | 240 | 240 | 216 | 239 |
Allel 2 | 149 | 236 | 239 | 182 | 194 | 252 | 248 | 247 | 255 |
Phenology

Bud burst: 3 days after Chasselas.
Grape maturity: period I, a half week after Chasselas
Grape maturity: period I, a half week after Chasselas
Suitability for cultivation and agronomic production

Chasan B must be trellised and short pruned due to it being a fertile and productive variety which grows long trailing branches.
Sensitivity to diseases and pests

This early variety resists very well to grey rot but is susceptible to phomopsis, powdery mildew and to a lesser extent to downy mildew and mites.
Technological potential

The grape clusters are very large and the berries are medium size. Chasan B produces aromatic products, but which are sensitive to oxidation. This variety is well suited to cool areas as acidity drops quickly during maturation and oftentimes drops to very low levels in southern regions.
Clonal selection in France

The only approved Chasan B clone carries the number 538
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.
- Documentation interne du Domaine de Vassal. 1949-2011, INRA, Marseillan-plage.
- Cépages et vignobles de France, tome 2. P. Galet, 1990, Ed. Dehan, Montpellier.
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![]() |
||
538 | ● | ■ INRA | ❒ | ✽ | ✦ | ✣ |
✚ 1976 | ✱ Languedoc | ◆ | ◗ | ✖ | ❖ | |
▲ | ❍ | ★ | ▼ | ✪ | ||
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