Iloa

B

Grape variety intended for the production of fruit juices.

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Origin

The geographical origin of the variety is specified or, if this is not possible, the area in which it is traditionally cultivated. The genetic origin of the variety is also indicated whenever it is known from hybridiser data or from genetic analyses published or obtained by the teams at INRAE in Montpellier (UMR AGAP) and Vassal-Montpellier Grapevine Biological Resources Centre (CRB-Vigne).

Iloa is an interspecific hybrid obtained by Seyve-Villard. Based on genetic analyses carried out in Montpellier, it would result from the crossbreeding of 6468 Seibel and Subéreux (6905 Seibel).

Use

This information indicates the normal and statutory use for the grapes.

Grape variety intended for the production of fruit juices.

Name of the variety in France

Name under which the variety is officially registered in the catalogue of grapevine varieties in France and under which it may be propagated and disseminated.

Iloa

Synonymy

Recognised alternative names that may be used to identify the propagation material of the variety in France or in other member countries of the European Union.

In France, this variety may officially be called "12413 Seyve-Villard" concerning plant propagating material.

Regulatory data

This information indicates on which list the variety is registered (A or B), whether it is classified for wine grapes, and in which member countries of the European Union the variety is also officially registered (for more information, see the "Legislation" menu.

In France, Iloa is officially listed in the "Catalogue of vine varieties" since 2017 on the A list.

Evolution of cultivated areas in France

The figures provided are taken from vineyard land registers (IVCC, ONIVIT, ONIVINS), general agricultural censuses (SCEES-INSEE) and the current computerised vineyard register (DGDDI, FAM). Regional vine planting data is available on the following site: https://visionet.franceagrimer.fr/Pages/DonneesInteractivesDocs.aspx?sousmenu=observatoire%20de%20la%20viticulture.

Year
ha

2018

0

Description elements

Only the principal ampelographic elements enabling the varieties to be characterised and identified are provided. They are presented according to the descriptor code recognised by the International Organisation of Vine and Wine (OIV), the International Union for the Protection of New Varieties of Plants (UPOV), the Community Plant Variety Office (OCVV) and Bioversity International (for more information, see the "Ampelographic glossary" menu). The photographs of leaves and grapes were taken in natural conditions, on the vine, in very similar situations in terms of growing conditions (sandy soil, Mediterranean coast): - Domaine de l'Espiguette (IFV), Le Grau du Roi (Gard), - Domaine de Vassal (INRAE), Marseillan (Hérault), - La Gaillarde Campus (Institut Agro | Montpellier SupAgro), Montpellier (Hérault). Only a few photographs, including the tips of bunches, were taken in other conditions.

The identification is based on:
- the tip of the young shoot that is half-open, with a high density of prostrate hairs and a piping distribution of anthocyanin coloration,
- the young leaves with bronze spots and a medium density of prostrate hairs,
- the red shoots,
- the adult leaves, entire or with three lobes, with shallow lateral sinuses, an open U- or V-shaped petiole sinus, quite large teeth with convex or straight sides, a moderate anthocyanin coloration of veins, a shiny, involute or twisted leaf blade, and on the lower side of the leaves, a low density of erect hairs,
- the ovoid berries.

Genetic profile

The genetic profile of the variety is provided for the 9 microsatellite markers (or SSR markers) selected under the European programme GrapeGen06 (http://www.eu-vitis.de/index.php) and by the OIV. The absolute size values of the alleles may vary slightly from one laboratory to another, but the relative differences between the two alleles of one single microsatellite are constant. The genetic analyses were conducted by the INRAE Montpellier team (UMR AGAP) and the IFV’s Plant Material Centre.

Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32

Allele 1

133

223

237

186

178

252

240

237

255

Allele 2

143

229

251

191

194

262

254

257

271

Cultivation and agronomic skills

The data on suitability are the result of field observations or, if none are available, of bibliography mining and the study of bibliographic references.

Iloa is productive, with a semi-erect bearing, and its vigor can vary depending on the area. This variety is quite sensitive to potassium deficiency.

Susceptibility to Diseases and Pests

These remarks are also the result of field observations or, if none are available, of bibliography mining and study of bibliographic references.

Iloa is sensitive to downy mildew and to grey rot but it is not very sensitive to powdery mildew. This variety is also not very affected by vine leafhoppers, bud mite disease and phomopsis.

Phenology

The growth stages indicated are the result of obsrvations made at the Domaine de Vassal Estate where the set of these varieties form a collection. The results are indicated compared to the Chasselas vine variety as a reference in order to make comparisons between years and different sites. As such, for information purposes, the dates for the Chasselas B growth stage at Domaine de Vassal are as follows: - Bud burst, 21 March (average over 50 years) - Grape maturity, 14 August (average over 50 years)

Bud burst: 8 days after Chasselas.
Grape maturity: mid-season, 2 weeks and a half after Chasselas.

Technological potential

The size of grape clusters and berries indicated are based on the following scales: - Wine grape varieties Size : Very small Bunch (g) : ≤ 100 Berry (g) : 1 - Table grape varieties Bunch (g) : 150 Berry (g) : 2 - Wine grape varieties Size : Small Bunch (g) : 100 - 200 Berry (g) : 1,5 - 2 - Table grape varieties Bunch (g) : 150 - 250 Berry (g) : 2 - 3,5 - Wine grape varieties Size : Moderate Bunch (g) : 200 - 250 Berry (g) : 2 - 2,5 - Table grape varieties Bunch (g) : 250 - 400 Berry (g) : 3,5 - 5,5 - Wine grape varieties Size : Large Bunch (g) : 250 - 400 Berry (g) : 2,5 - 3,5 - Table grape varieties Bunch (g) : 400 - 700 Berry (g) : 5,5 - 8 - Wine grape varieties Size : Very large Bunch (g) : 400 Berry (g) : 3,5 - Table grape varieties Bunch (g) : 700 Berry (g) : 8 Remarks concerning the characteristics of the wines are generally based on tastings organised by juries of professionals.

Iloa's bunches are medium in size and moderately compact. The berries are large, simple-flavored, with a thick skin and a juicy pulp. The berries have a low sugar accumulation potential and a very pronounced acidity. They can also have a slightly peppery flavor.

Clonal selection in France

In this section, the list of certified clones is given. Information on clone conservatories is also provided.

There is no certified clone for this variety yet.

Bibliographic references

Bibliography

- Documentary collections of the Centre de Ressources Biologiques de la Vigne de Vassal-Montpellier, INRAE - Institut Agro | Montpellier, Marseillan, France.
- Cépages et vignobles de France, tome 1. P. Galet, 1988, Ed. Dehan, Montpellier, France.