RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety is intended exclusively for use as a rootstock and has a male flower type, producing no clusters. Bushes are characterized by vigorous growth with shoots up to 3.5–4 meters in length and a powerful deep root system.
The plant possesses high adaptability to calcareous, acidic, and slightly saline soils. The rootstock is tolerant to spring waterlogging, but poorly tolerates prolonged over-wetting. It has a long growing season, which can influence the ripening times of the vine and fruit of the scion varieties.
The variety exhibits high resistance to root phylloxera and fungal diseases such as downy mildew and powdery mildew. It possesses medium resistance to leaf phylloxera, actively produces lateral shoots, and regenerates its root system well.
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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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.
№ 1035714
№ 003514
№ 17030010
Records are sourced from official registry publications. Data sources and legal status
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Same species
Vitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
Vitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
Vitis L. · Grapevine
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Vitis L. · Grapevine
INCONNU (FR)
Vitis L. · Grapevine
INCONNU (FR)
Vitis L. · Grapevine
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Nearby in the species list 07-6-143-1-2, 1 BLANCHARD, 101-14 MGt, 101 14 MILLARDET GRASSET, 107 Vidal, 110 R, 110 RITCHER, 1103 P, 11803 Seibel, 12375 Seyve-Villard, 13 5 EVE JEREZ, 13-5 Evex, 140 Ru., 140 Ruggeri, 1447 Paulsen, 150-15 Malègue, 157-11 Couderc, 161-49 C