RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety was obtained by crossing Bolgar and Hybrid VI-4. The growing period is 146–160 days, ripening occurs around September 20. The bushes are vigorous, the bunches are of medium size weighing 260–300 g and have a conical shape and medium density.
The berries weigh 3–3.5 g, are oval or oblong in shape, green-yellow in color, and acquire a pinkish hue when overripe. The variety belongs to the second class of seedlessness. Sugar accumulation reaches 20–20.3 Brix with a juice acidity of 7.9–8.0 g/l.
Resistance to downy mildew and powdery mildew is low, however, the variety shows resistance to gray mold and drought. Frost resistance is -19...-21 °C. Pruning of fruit-bearing vines to 6–8 buds is recommended.
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.
№ Rusensko bez seme*BG 2
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Same species
Vitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
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UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
Vitis L. · Grapevine
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Vitis L. · Grapevine
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Nearby in the species list Rulandské modré, Rulandské šedé, Rulenka, Rumeni muškat, Rumeni plavec, Runa, RUPESTRIS DE LOT, Rupestris du Lot, Rupestris St. George K.M.1, Rusalka 3, Rušljin, Rusidava Alb, Rutilia B., Ruža, Ružica, Ružica Crvena, Ruzzese B., Ryahovo, Ryzling moravský, Ryzlink rýnský