Glera

Glera B

New

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.

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.

Glera

Origin

Glera comes from Italy.

Synonyms

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.

There is no officially recognized synonym in France nor in the other countries of the European Union, for this variety.

Legal information 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 <a href="/en/reglementation">"Legislation"</a>menu).

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 <a href="/en/reglementation">"Legislation"</a>menu).

In France, Glera is officially listed in the "Catalogue of vine varieties" since 2020 on the A and classified. This variety is also listed in the catalogues of other Member States of the European Union: Bulgaria, Croatia, Italy and Slovenia.

Use

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

Wine grape variety.

Descriptive elements

<p>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 <a href="/en/vocabulaire">"Ampelographic glossary"</a> menu).<br>
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):</p>
<ul>
<li>Domaine de l'Espiguette (IFV), Le Grau du Roi (Gard),</li>
<li>Domaine de Vassal (INRAE), Marseillan (Hérault),</li>
<li>La Gaillarde Campus (Institut Agro | Montpellier SupAgro), Montpellier (Hérault).</li>
</ul>
<p>Only a few photographs, including the tips of bunches, were taken in other conditions.</p>

The identification is based on:
- the white tip of the young leaves with a high density of prostrate hairs,
- the yellowish young leaves with bronze spots and a high density of prostrate hairs,
- the shoots with red-striped or slightly red internodes,
- the pentagonal or wedge-shaped adult leaves, with three or five lobes with involute edges, a slightly open U- or brace-shaped petiole sinus, with sometimes a tooth on the edge, medium length teeth compared to their width at the base with straight or convex sides, no anthocyanin coloration of veins, a twisted, finely blistered leaf blade, and on the lower side of the leaves, a low to medium density of erect and prostrate hairs,
- the round-shaped berries.

Genetic profile

Microsatellite	VVS2	VVMD5	VVMD7	VVMD27	VRZAG62	VRZAG79	VVMD25	VVMD28	VVMD32
Allel 1	131	223	239	176	188	250	238	235	261
Allel 2	141	244	247	191	204	260	242	243	263

Phenology

<p>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:</p>
<ul>
<li>Bud burst, 21 March (average over 50 years)</li>
<li>Grape maturity, 14 August (average over 50 years)</li>
</ul>

Bud burst: 4 days after Chasselas.
Grape maturity: late-season, 4 weeks after Chasselas.

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

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

Glera is vigorous and has a drooping bearing. It is usually pruned long to increase the yields and needs to be well trellised. This variety provides sufficient and regular yields and its ramifications are not very fertile. As its bud burst is early, Glera is sensitive to sping frosts. It is susceptible to coulure, millerandage and drought.

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.

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

Glera is sensitive to downy mildew, powdery mildew and phytoplasmas (flavescence dorée).

Technological potentiality

<p>The size of grape clusters and berries indicated are based on the following scales:</p>
<table id="potentiel">
<thead>
<tr>
<td> </td>
<td colspan="2">Wine grape varieties</td>
<td colspan="2">Table grape varieties</td>
</tr>
</thead>
<tbody>
<tr>
<td>Size</td>
<td>Bunch (g)</td>
<td>Berry (g)</td>
<td>Bunch (g)</td>
<td>Berry (g)</td>
</tr>
<tr>
<td>Very small</td>
<td>≤ 100</td>
<td>< 1</td>
<td>< 150</td>
<td>< 2</td>
</tr>
<tr>
<td>Small</td>
<td>100 - 200</td>
<td>1,5 - 2</td>
<td>150 - 250</td>
<td>2 - 3,5</td>
</tr>
<tr>
<td>Moderate</td>
<td>200 - 250</td>
<td>2 - 2,5</td>
<td>250 - 400</td>
<td>3,5 - 5,5</td>
</tr>
<tr>
<td>Large</td>
<td>250 - 400</td>
<td>2,5 - 3,5</td>
<td>400 - 700</td>
<td>5,5 - 8</td>
</tr>
<tr>
<td>Very large</td>
<td>> 400</td>
<td>> 3,5</td>
<td>> 700</td>
<td>> 8</td>
</tr>
</tbody>
</table>
<p>Remarks concerning the characteristics of the wines are generally based on tastings organised by juries of professionals.</p>

Glera's bunches are medium to large in size and not very compact. The berries are medium in size, with a simple flavor, a thin skin and a juicy pulp. This variety gives mostly sparkling wines of the "spumante" or "frizzante" style, with a low alcohol degree and a good acidity. Glera can also be used to produce light-bodied, rather lively and harmonious in the mouth dry white wines.

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

The only certified Glera clone carries the number 1317.

Bibliographic references The main bibliographical sources are provided.

- 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.
- Registro nazionale delle varieta di vite. Italian Ministry of Agriculture [web site, visited in 2020].
- Principali vitigni da vino coltivati in Italia. G. Dalmasso et al., 1952, Italy.
- Vitigni d'Italia. A. Calò et al., 2001, Ed. Calderini edagricole, Italy.
- Wine Grapes. J. Robinson et al., 2012, Ed. Penguin, England.
- Vitigni italiani, loro caratterizzazione e valorizzazione. Bavaresco et al., 2015, Ed. Gianni Sartori, Italy.

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

		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
1317		Hérault	IFV - INRA	2019

Note

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Catalogue of grapevines cultivated in France