Nemadex Alain Bouquet
New
Name of variety in France (and usual designation)
Nemadex Alain Bouquet
Breeder/selector and year of obtention
INRA, 1987.
Genetic origin
This variety results from the crossbreeding of a Vitis vinifera (Cabernet-Sauvignon x Alicante Henri Bouschet) and Muscadinia rotundifolia (NC 184-4) F1 hybrid (VMH 8771) and 140 Ruggeri.
Evolution of mother vine surfaces
2015
Rank 19
ha 4.8
Estimated surface area of French vines grafted with the rootstock, and main regions of use
10 ha.
Descriptive elements
The identification is based on:
-the tip of the young shoot that is open with a low density of prostate hairs,
- the green young leaves with bronze spots, 
- the shoots with no erect or prostate hairs,
- the small to medium, kidney-shaped, entire adult leaves, with an open or very open U-shaped petiole sinus, short teeth compared to their width at the base with convex sides, a smooth, not very thick leaf blade, slightly curly on the edges and involute around the petiole sinus lobes, a weak anthocyanin coloration of veins, and on the lower side of the leaves, a very low density of erect hairs and no prostate hairs,
- the hermaphrodite flowers,
- the very small, round-shaped berries, with a blue black skin, a slightly colored pulp with a foxy taste,
- the dark brown woody shoots.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 135 238 231 236 214 258 236 0 249
Allel 2 149 243 245 238 214 260 238 0 251
Resistance to soil parasites
Nemadex Alain Bouquet is very highly tolerant to the root form of phylloxera. It is also partially resistant to Xiphinema index nematodes, which delays the infection and slows down the fanleaf virus contamination in the vineyards.
Adaptation to the environment
Nemadex Alain Bouquet resists up to 15% of "active" limestone and an ICP of 30. Its resistance to iron chlorosis is thus low to moderate. This rootstock is sensitive to temporary water excess during the spring and it is not very resistant to drought.
Interaction with grafts and production objectives
Nemadex Alain Bouquet confers a rather low vigor and induces moderate yields.
Vegetative propagation aptitudes
Nemadex Alain Bouquet has a bushy and erect bearing, with short internodes. Its wood production is consequently very low (10 to 30 000 m/ha). Nemadex Alain Bouquet has moderate to good cutting and grafting capacities.
Resistance to aerial parasites
Nemadex Alain Bouquet is not very sensitive to the gall form of phylloxera.
Clonal selection in France
In France, the only certified Nemadex Alain Bouquet clone carries the number 1163 and it is multiplied on 3 has 41 ares of mother vines producing certified material, in 2017.

Datas are extracted from: Les chiffres de la pépinière viticole, 2017, Datas and assesment of FranceAgriMer, may 2018.
Bibliographic references
- Documentary collections of the Centre de Ressources Biologiques de la Vigne de Vassal-Montpellier, INRAE - Montpellier SupAgro, Marseillan, France.
- Nemadex Alain Bouquet root stock technical data sheet, INRA, 2013, France.