RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety is the result of clonal selection of the base grape Olaszrizling, also known as Welschriesling. The clone retains the main species characteristics of the original variety, including medium vigor of the vines and late ripening.
Unlike the base variety, the G.K.18 clone is characterized by more pronounced acidity and increased crop aromatics. Like the parent variety, it possesses relative frost resistance, but is sensitive to grey mold, downy mildew, and powdery mildew.
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.
№ 236474
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
Nearby in the species list Okatac Rodni, Olasz rizling, Olasz rizling B.14, Olasz rizling B.14/14, Olasz rizling B.20, Olasz rizling B.20/16, Olasz rizling B.20/7, Olasz rizling B.5., Olasz rizling B.5/8, Olasz rizling G.K.1, Olasz rizling G.K.37, Olasz rizling Kt.8, Olasz rizling P.10, Olasz rizling P.112, Olasz rizling P.2., Olasz rizling P.2/16, Olasz rizling P.2/23, Olasz rizling P.2/30, Olasz rizling P.300, Olasz rizling SK.54