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Rootstock data sheet
Name of vine variety in France (and common name)
Name of Variety in France
Breeder and year of obtention
The name of the plant breeder is indicated. The genetic origin of the variety is likewise indicated when know due to published genetic analyses or obtained by the INRA Genetic Vine team of Montpellier (UMR DIAPC) and the Domaine de Vassal Estate(Valérie Laucou, Thierry Lacombe, Manuel Di Vecchi Staraz, Jean-Michel Boursiquot and Patrice This).   Data indicated comes from  IVCC, ONIVIT, ONIVINS, VINIFLHOR annual reviews.
Genetic origin
The genetic origin of the variety is likewise indicated when known due to public genetic analyses or obtained by the INRA Genetic Vine Team of  Montpellier (UMR DIAPC) and the Domaine de Vassal Estate (Valérie Laucou, Thierry Lacombe, Manuel Di Vecchi Staraz, Jean-Michel Boursiquot and Patrice This). 
Evolution of areas under rootstock nurseries
Data indicated comes from  IVCC, ONIVIT, ONIVINS, VINIFLHOR annual reviews.
Estimated surface area of French vineyards grafted with this rootstock and the main areas of use
Data comes from computerized vineyard register and bibiographical data. The regions listed are ranked from top to bottom in terms of size. 
Ampelographic description
It is solely the principle ampelographic items used to characterize and identify root stock which were selected. They are described in accordance with the Code of Ampelographic Descriptos by the International Organisation of Vine and Wine (O.I.V), lnternal Union for the Proection of New Varieties (U.P.O.V) and Bioversity International.
Inside photos of bud burst, flowers and adult leaves were taken by Jean-Pierre Bruno (INRA, Domaine de Vassal Estate) from material taken from the estate collections.
Comment: the photo scale is not the same for the 3 organs presented. Photos of bud burst are reduced (x 0.5 approx), adult leaves are reduced  (x 0.25 environ) and inflorescences are enlarged (x 4 approx).
Genetic profile
The genetic profile of the variety is given for 9 microsatellite (or SSR) markers selected in the context of the European « GrapeGen06 » program (http://www1.montpellier.inra.fr/grapegen06 ). The absolute value of allele sizes may vary silightly from one laboratory to another but the relative differences between two alleles from a microsatellite are stable. Genetic analyses are carried out by the INRA Vine Genetics team from  Montpellier (Valérie Laucou) and by the IFV Plant Matter Pole (Delphine Legrand).
Resistance to soil parasites
The tolerance level of radicicolae phylloxera along with resistance to nematodes (Meloidogyne hapla, Meloidogyne incognita et Meloidogyne arenaria), to Agrobacterium vitis (bacteria responsible for burl  disease) and to certain soil funguses is noted on the observation base or in bibliographic data.
Adapt to environment
This paragraph provides information on the rootstock variety behavior with regard to its  structure, soil texture and composition, mineral contents and soil pH level. It likewise highlights the behavior of root stock faced with lack of water during the growing season.

Limestone or ferric chlorosis corresponds to problems with assimilating iron linked to low iron content and/or high carbonate (high limestone content, high pH, high water soil content, etc.)
The total limestone  indicator alone provides an imperfect idea of the  tendency of the soil to induce chlorosis. Active limestone corresponds to the carbonate percentage of the  fine fraction of the soil (fine clay and  silt). It represents a very variable percentage of total limestone. 
The Chlorotic Power Index (CPI) is a calculation which takes into account active limestone ccontent and easily extractable soil iron content.  

Thyllosis and folletage 

The phenenoma of leaf wilting is linked to the difficulty of water circulation in the plant when there is substantial evapotranspiration (dry wind following heavy precipitation during the summer season)  while root absorption is limiting particularly during  root asphyxia. In that case, the high tension of the vessels lead to the formation of air bubbles (cavitation) or  tyloses (invagination of cell membranes next to the vessels), which causes a slowing down of the sap circulation and water stress in the leaves.
Interaction with grafts and production objectives
The rootstock can interact with grafting characeristics releated to the earliness of the growing cycle, the growth and development of shoots and also the yield components (fertility and berry size).
In certain cases, the incompatibility or bad affinity of the variety of the rootstock and the grafting variety are specified.
Aptitudes for plant propagation
Wood production of rootstock strain is indicated. (source: ENTAV-ONIVINS survey at a vine nursery, April 2001).
Information on bud cuttings, propagation by cuttings and grafting are likewise specified. Details are likewise provided when the rootstock variety requires specific precautions during grafting and stratification.
Resistance to aerial parasites
Sensitivity to gall phylloxera is detailed along with the resistance level or tolerance to the following diseases: mildew (Plasmopara viticola), anthracnosis (Elsinoe ampelina) and erinose (Colomerus vitis) based on observations and bibliographic data.
Clonal selection in France
All approved clones are indicated. The clones which are the most commonly used and/or for which propagation is encouraged are listed in bold. The clonal selection of rootstoks is only sanitary because of their recent origin.