RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety is a rootstock bred through selection involving several wild grape species, including Vitis champinii, Vitis rufotomentosa, Vitis riparia and Vitis monticola. The plant has medium vigor and forms straight canes with good internodes.
The rootstock is characterized by high resistance to phylloxera and a wide range of nematodes, including root-knot, dagger, citrus and Lesion nematodes. It exhibits moderate tolerance to soil salinity and drought, and also demonstrates good graft compatibility with various grape varieties.
2 jurisdictions
Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.
Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 20210320
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
More 2 records protections in other jurisdictions are shown on the map above.
Records are sourced from official registry publications. Data sources and legal status
The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.
This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources
Same species
Vitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
Vitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
Vitis L. · Grapevine
David W.Cain
Vitis L. · Grapevine
Vitis L. · Grapevine
Andrew Walker, Harold P. Olmo
Vitis L. · Grapevine
Nearby in the species list Grenache rouge N, Grero N., Grézot 1, Grganja, Grignolino N., Grillo B., Gringet B, Grisa Rousa, Grk, GRN1, Grolleau gris G, Grolleau N, Groppello, Groppello di Mocasina N., Groppello di Revo’ N., Groppello di S. Stefano N., Groppello Gentile N., Groppello Grasparossa, Groppello Maestri, Groppello Ruberti