Isa B
Name of the variety in France
Isa
Origin
This variety was obtained in 1964 by INRA by crossbreeding Gloria Hungariae and Cardinal.
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, Isa is officially listed in the "Catalogue of vine varieties" on the A list. This variety is also listed in the catalogue of Bulgaria.
Use
Table grape variety.
Evolution of cultivated areas in France
2000 2008 2018
ha 11 11 4.7
Descriptive elements
The identification is based on:
- the tip of the young shoot with a low density of prostate hairs,
- the green young leaves with bronze spots,
- the circular or pentagonal adult leaves, with five or seven lobes, V-shaped lateral sinuses with overlapping lateral lobes, a slightly open or closed U- or V-shaped petiole sinus, medium to long teeth with straight sides, no or low anthocyanin coloration of veins, a smooth, slightly blistered and twisted leaf blade, and on the lower side of the leaves, a low density of erect hairs on the veins and no or a very low density of prostate hairs,
- the round-shaped or broad ellipsoid berries, with a slightly aromatic or muscat flavor.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 131 229 249 176 186 248 240 267 255
Allel 2 133 234 249 180 186 256 254 267 271
Phenology
Bud burst: 4 days before Chasselas.
Grape maturity: early-season, same as Chasselas.
Suitability for cultivation and agronomic production
Isa has a moderate to strong vigor and a semi-erect bearing. This variety must be trained and managed by short pruning.
Susceptibility to diseases and pests
Isa is slightly sensitive to powdery mildew.
Technological potentiality
The bunches are medium in size, supple and not very compact. The berries are medium to large in size with a fairly thin skin and a pleasantly flavored, slightly muscaté firm pulp. To obtain a good golden coloring of the berries and prevent browning, leaf removal should be moderate and not too intense. This variety has an average storage and transport capacity.
Clonal selection in France
The only certified Isa clone carries the number 1031.
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
1031 INRA 1995