Kober 125 AA
Name of vine variety in France (and common name)
Kober 125 AA (125 AA)
Breeder and year of obtention
Sigmund Teleki and Franz Kober, 1896
Genetic origin
This variety was derived from the crossbreeding of Vitis berlandieri and Vitis riparia derived from Euryale Rességuier.
Evolution of areas under rootstock nurseries
1955 1965 1975 1985 1995 2005 2015
Rank 24 21 17 16 16 16 18
ha 2 1 11 25 14 14 11
Estimated surface area of French vineyards grafted with this rootstock and the main areas of use
200 ha. Alsace.
Ampelographic description
Identification signs include:
- the tip of the young shoot which is half-open to closed with a moderate coat of flat-lying hairs, 
- very bronze colored young leaves,
- the shoot has a ribbed contour, a slightly elliptical section, internodes with a low to moderate anthocyanin pigmentation and a heavy coat of upright hairs on the internodes and the nodes,
- dark green adult leaves, large wedge-shaped, whole and sometimes tri-lobed for the leaves at the base, an open U-shaped petiolar sinus, moderate anthocyanin pigmentation and the underside with a moderate coat of upright hairs,
- female flowers,
-the berries are very small, round-shaped and the skin color is blue-black.
- the vine shoots have brown to brown-gray internodes, purplish nodes and a heavy coat of upright hairs on the internodes and nodes,
Genetic profile
Allel 1 139 223 231 236 192 252 236 214 259
Allel 2 145 263 251 249 210 260 249 251 259
Resistance to soil parasites
125 AA has a high tolerance level to radicicolae phylloxera.
Adapt to environment
125 AA  resists up to 13% of active limestone. Its resistance to ferric chlorosis is considered low to moderate and it appears susceptible to excess humidity in the spring. 125 AA has difficulty in absorbing magnesium.
Interaction with grafts and production objectives
125 AA has medium to strong vigor to grafts. It is very compatible with Müller-Thurgau B.
Aptitudes for plant propagation
This rootstock is a medium to good producer of wood (30 000 to 80 000 m/ha) and has good propagation by cuttings capacity. Its internodes are long with a moderate diameter.
Resistance to aerial parasites
Low to moderate susceptibility to phylloxera gallicole with a high resistance to downy mildew.
Clonal selection in France
The 6 approved 125 AA clones carry the numbers 136, 181, 182, 183, 184 and 185.