Gravesac
Name of vine variety in France (and common name)
Gravesac
Breeder and year of obtention
Inra, 1962
Genetic origin
This variety was derived from the crossbreeding of 161-49 Couderc and 3309 Couderc.
Evolution of areas under rootstock nurseries
1975 1985 1995 2005 2015
Rank 18 13 11 10 7
ha 19 37 52 97 104
Estimated surface area of French vineyards grafted with this rootstock and the main areas of use
14 000 ha. Aquitaine, Midi-Pyrénées, Val de Loire, Languedoc-Roussillon, Alsace
Ampelographic description
Identification signs include:
- the tip of the young shoot is closed and has a very sparse coat of flat-lying hairs,
- the young leaves are slightly bronze colored,
- the shoot has an elliptical to circular section with heavy anthocyanin pigmentation,
- adult leaves are moderate size, orbicular, whole, slightly involute with an open U-shaped petiolar sinus, sometimes limited by the vein near the petiolar point; smooth leaf blade, sometimes slightly bubbled or pounded, heavy anthocyanin pigmentation and the underside with an absence of flat-lying hairs and a sparse coat of upright hairs,
- male flowers,
- the vine shoots are brownish-red to purple with an absence of flat-lying and upright hairs.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 139 261 245 236 190 256 236 239 265
Allel 2 159 263 251 238 192 258 238 241 265
Resistance to soil parasites
Gravesac displays a high tolerance level to radicicolae phylloxera. It is however sensitive to the nematodes Meloidogyne incognita and Meloidogyne arenaria.
Adapt to environment
Gravesac resists up to 15% total limestone, 6% active limestone and a CPI of 5. Its resistance to ferrric chlorosis is thus low to moderate.It displays very good behavior to acid soil (amendments focused on raising the soil pH level before planting are however necessary under acid conditions). This root stock is likewise adapted to temporary humid conditions at spring time and its resistance to drought is moderate. Gravesac is adapted to sandy or gravel soils.
Interaction with grafts and production objectives
Gravesac displays good affinity with grafts and its vigor is moderate to strong. Yields obtained from plants grafted with this root stock are rather high and steady and the products produced are generally good quality.
Aptitudes for plant propagation
Gravesac has internodes of moderate to large diameter and the growth of quick buds is limited. The wood is fairly hard and good production   (40 000 to 70 000 m/ha).This root stock also has a good capacity for propagation by cuttings and grafting.
Resistance to aerial parasites
Gravesac is moderately sensitive to gallicolae phylloxera and displays a good degree of resistance to downy mildew and to anthracnosis.
Clonal selection in France
The only approved Gravesac clone carries the number 264.