Rupestris du Lot
Name of vine variety in France (and common name)
Rupestris du Lot
Breeder and year of obtention
This root stock was initially noted by R. Sijas at Montferrier near Montpellier and was subsequently studied by Alexis
Millardet who then gave its name., 1879
Genetic origin
This is a Vitis rupestris Scheele selection.
Evolution of areas under rootstock nurseries
1945 1955 1965 1975 1985 1995 2005 2015
Rank 1 1 1 4 8 15 20 17
ha 529 981 917 423 81 14 7 12
Estimated surface area of French vineyards grafted with this rootstock and the main areas of use
25 000 ha. Midi-Pyrénées, Charentes, Rhône-Alpes, Aquitaine, Provence-Alpes-Côte d’Azur, Corse, Languedoc-Roussillon, Val de Loire
Ampelographic description
Identification signs include:
- the tips of the young shoot are closed and have an absence of flat-lying and upright hairs,
- the young leaves are reddish, shiny with an absence of flat-lying and upright hairs,
- the shoot has an upright growth and is bushy  with a smooth and purple color uniform surface,  with an absence of flat-lying and upright hairs,
- the tendrils are short and have a hevay anthocyanin coloration,
- adult leaves are small, kideny-shaped, whole, folded,  towards the upper side with an open petiole sinus with a heavy anthocyanin coloration of veins; average length teeth compared to width with straight sides; smooth leaf blade and the underside with an absence of flat-lying and upright hairs,
- male flowers,
- purplish brown vine shoots, short, branches with an an absence of flat-lying and upright hairs.
Genetic profile
Allel 1 135 234 257 236 196 260 236 218 234
Allel 2 135 265 260 236 196 264 236 241 236
Resistance to soil parasites
This rootstock is fairly tolerant to radicicolae phylloxera but is sensitive to Meloidogyne arenaria and Meloidogyne incognita nematodes. It is somewhat tolerant to  Meloidogyne hapla, Phytophtora cinnamomi and Agrobacterium vitis nematodes.
Adapt to environment
Rupestris du Lot resists up to 25% total limestone, 14% of active limestone and to an CPI of 20. Its resistence to drought is moderate. Avoid planting in soil which is too compact. Slightly tolerant to chlorides and absorbs potassium fairly well. Rupestris du Lot is well adapted to inferior and very little or not limestone soil.
Interaction with grafts and production objectives
Rupestris du Lot easily grows new shoots, but it usually has good affinity with grafts. Good results are found with Grenache N and Ugni blanc B. This root stock vigor is high and induces considerable plant growth. Rupestris du Lot tends to delay vine development and the risk of shot berries with certain sensitive vine varieties may increase.
Aptitudes for plant propagation
Rupestris du Lot internodes are short and its diameter is low to moderate. The wood is hard and the growth of lateral shoots is widespread. Wood production is low (20 000 to 40 000 m/ha) but Rupestris du Lot is good for propagation by cuttings or grafting.
Resistance to aerial parasites
This rootstock is very sensitive to gall mite phylloxera. It is likewise sensitive to anthracnosis but shows high resistance to downy mildew.
Clonal selection in France
The 6 approved Rupestris du Lot clones carry the numbers 110, 213, 214, 235, 750 and 751.