RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety is a rootstock grape with a male flower type, not intended for berry production. The bushes are characterized by vigorous growth and a spreading shape with upright shoots prone to active lateral shoot formation. The leaves are small, entire, kidney-shaped, dark green with a wide petiolar sinus.
The plant possesses high resistance to root-form phylloxera, downy mildew, and powdery mildew, but is susceptible to grey mold, anthracnose, nematodes, and a number of viruses. The variety prefers light, deep, gravelly soils and does not tolerate waterlogging or dense soils well. Due to its developed root system, it possesses good drought tolerance.
When used as a rootstock, the variety provides high growth vigor for the scion, but requires control due to a tendency to delay cane maturation in grafted varieties. In young bushes, excessive growth vigor can lead to flower drop.
1 jurisdiction
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.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 17030012
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
David W.Cain
Vitis L. · Grapevine
Vitis L. · Grapevine
Vitis L. · Grapevine
INCONNU (FR)
Nearby in the species list Rukavina, Ruländer, Rulandské bielé, Rulandské bílé, Rulandské modré, Rulandské šedé, Rulenka, Rumeni muškat, Rumeni plavec, Runa, Rupestris du Lot, Rupestris St. George K.M.1, Rusalka 3, Rusensko bez seme, Rušljin, Rusidava Alb, Rutilia B., Ruža, Ružica, Ružica Crvena