Abstract
Interspecific hybridization is a common method in the selection of grape varieties with resistance to diseases and adverse environmental conditions. The main direction of the breeding programs of ARRIV&W - branch of FSBSI “FRARC” is the breeding of varieties with disease resistance and high adaptive potential to the adverse effects of weather conditions. The novelty of the research lies in the creation of a new seedless grape variety, the study of its adaptive potential, economic usefulness and value in the growing conditions of the Rostov region. The research was carried out according to the generally accepted methods of M.A. Laza- revsky, N.N. Prostoserdov, P.N. Nedov, K.V. Smirnov. The origin of the Kivin variety and the results of agrobiological and ampelmetric studies are given. The characteristics of the main indicators of the variety according to research data for 5 years (2018–2022) are presented. The main parameters of the leaf were performed according to the coding program of the grape variety according to the OIV ampelometric descriptors for 33 indicators. The Kivin grape variety is very early ripening, the berries are white with a medium-thick skin, meaty flesh and harmonious taste with light berry tones, weighing 2.3 g. The sugar content in the juice of berries at the time of removal of maturity averages 170 g/dm3 , the content of total acids is 5.9 g/dm3 . The yield is above average (147 c/ha). Its withstands frost down to minus 25 °C, damage by mildew, oidium, Alternaria at the level of 2.0 points. Admitted to the State Test in 2022, it is characterized by high biological plasticity, resistance to temperature stresses and fungal diseases. The crop is used for fresh consumption, the production of dried products and ordinary table wine. The variety is recommended for cultivation in the North Caucasus (the sixth region) in an uncovered culture. According to the sum of the active temperatures required for the ripening of grapes, the variety is suitable for cultivation in the central regions of Russia and the Southern Urals.
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