99 Richter
Name of vine variety in France (and common name)
99 Richter (99 R)
Breeder and year of obtention
Franz Richter, 1902
Genetic origin
This is a variety made from the crossbreeding between Vitis berlandieri cv. Las Sorres and Vitis rupestris cv. Lot.
Evolution of areas under rootstock nurseries
1945 1955 1965 1975 1985 1995 2005 2015
Rank 7 6 4 10 15 23 22 26
ha 55 223 430 179 26 3 3 0.04
Estimated surface area of French vineyards grafted with this rootstock and the main areas of use
5 000 ha. Languedoc-Roussillon, Provence-Alpes-Côte d’Azur, Rhône-Alpes, Corsica
Ampelographic description
Identification signs include:
- the tips of the young shoot are semi-open and have a sparse coat of flat-lying hairs,
- the young leaves are red,
- the shoots are bushy with an upright growth, corrugated contour with a semi circular or lightly elliptical section; heavy anthocyanin coloring and an absence of flat-lying or upright hairs,
- adult leaves are small, kidney shaped, full, upturned or rugged, dissymetrical with an open U-shaped petiolar sinus, heavy nathocyanin coloring of veins, teeth with straigh sides, light green leaf blade, dull and the underside with an absence of or very sllight coat of flat-lying and upright hairs,
- male flowers,
- brownish-gray, striped vine shoots.
Genetic profile
Allel 1 135 234 231 236 196 252 236 218 259
Allel 2 147 234 260 246 210 264 246 235 259
Resistance to soil parasites
99 R offers a high tolerance level to radicicolae phylloxera. Its resistance to Meloidogyne hapla nematodes is good but is only average with regard to Meloidogyne incognita and Meloidogyne arenaria nematodes.
Adapt to environment
99 R resists up to 25% of total limestone, 14% of active limestone and a CPI of 20. Its resistance to drought is moderate to strong. It appears to be sensitive to soil acidity and excess chlorides.
Interaction with grafts and production objectives
99 R presents a good affinity to grafts. The vigor osf this root stock is strong. It tends to delay the plant cycle of the grafts and sometimes promotes coulure. Th first plant developmùent is rather slow. In addition, the risk of degeneration is increased with Syrah N.
Aptitudes for plant propagation
99 R inter-nodes are of avergae length and the diameter is average to large. The growth of accesory buds is wide apread. Wood production is moderate (30 000 to 40 000 m/ha) and 99 R has moderate propagation by cuttings recovery and to grafting.
Resistance to aerial parasites
This root stock is very sensitive to gall phylloxera. It is likewise sensitive to anthracnosis but has a high resistance level to downy mildew.
Clonal selection in France
The 7 approved 99 R clones carry the numbers: 96, 150, 162, 178, 179, 223 and 754.