RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety is very vigorous and has a long growing season, which may delay the maturation of the vine and the ripening of the crop of the varieties grafted onto it. The flower is of the male type, therefore the variety does not form bunches and is not used for berry production. Shoots have internodes 10–13 cm long, leaves are small or medium, kidney-shaped and entire.
The rootstock exhibits high resistance to downy mildew, powdery mildew, and root phylloxera, while resistance to leaf phylloxera is assessed as medium. The variety tolerates waterlogging poorly and is not recommended for rich, moist soils, as this reduces the quality of the scion's berries. The rooting ability of cuttings during propagation is assessed as weak or satisfactory.
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.
№ 453486
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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
Nearby in the species list Ruby Cabernet, Ruby Pinot, Ruby Seedless, Ruby Seedless N., Ruche' N., Rudava, Rudežuža, Rufete, Rufete Serrano Blanco, Rufete T, Ruggine B., Rukatac, Rukavina, Ruländer, Rulandské bielé, Rulandské bílé, Rulandské modré, Rulandské šedé, Rulenka, Rumeni muškat