RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The bushes are characterized by medium vigor and insignificant lateral shoot formation. The leaves are medium-sized, three- or five-lobed, slightly dissected. The flower is perfect. The clusters are of medium size (150–300 g), cylindrical to cylindrical-conical in shape, of moderate density.
The berries are of medium size (1.5–5 g), round, black or dark violet in color, with juicy, intensely colored pulp. The variety is distinguished by stable yields with 80% fruitful shoots. The sugar content of the juice is 20–22%, acidity is 8–9 g/l.
The variety is sensitive to magnesium content in the soil and does not tolerate cold and windy sites, where berry ripening may be uneven. Due to high resistance to downy mildew, powdery mildew, and gray mold, it is suitable for cultivation with minimal use of pesticides.
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.
№ Regent N.*IT 5
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UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
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Nearby in the species list Refosco d`Istria, Refosco d' Istria, Refosco dal peduncolo rosso N., Refosco N., Refosco nostrano N., Refošk, Refoško Crni, Refrén, Refren ISK, Regent, Regessis, Regina, Regina B., Regina Dei Viggneti, Regina dei vigneti, Regina dei vigneti B., Regina Vignet, Regner, Reichensteiner, Reifler