BIOCHEMICAL CHARACTERISTICS OF TECHNICAL HYBRIDS OF AZOSViV GRAPE BREEDING

The aim of the study is to investigate new hybrid grape forms by their main biochemical parameters with the prospect of obtaining new high-tech varieties from them. The paper presents the results of scientific studies of biochemical parameters of new technical hybrid grape forms. These forms were obtained by breeders of the Anapa Zonal Experimental Station of Viticulture and Winemaking, a branch of Federal State Budget Scientific Institution North Caucasian FSC of Horticulture, Viticulture, Wine-making (AZOSViV, a branch of the North Caucasus FSC for Horticulture, Viticulture and Winemaking) and are characterized by late ripening, high productivity, winter hardiness and phylloxera tolerance. Biochemical analysis of the berry must of the studied hybrids was carried out at the institute. Sugars, titratable acids, ammonium compounds, cations and organic acids were studied. The technical grape variety of late ripe-ning Krasnostop Anapsky was used as a control for a comparative analysis of the main biochemical cha-racteristics. A pressing issue for breeders has always been the creation of new sustainable and high-tech grape varieties with their subsequent recommendation for implementation in the production process. The research results showed that the studied hybrids 59-39 and 62-23 annually have stable yields, high sugar accumulation compared to the control variety: 59-39 – 24.2 g / 100 cm3, 62-23 – 24.1, control – 24.0 g/100 cm3. The content of ammonium compounds in hybrid forms is small and comparable to the control. For example, in form 59-39, the content of ammonium compounds is 20 mg/dm3, which is at the level of the control variety. The concentration of metal cations in the juice of berries indicates a high content of these compounds in the soil. The content of potassium in the must is especially high. The studied hybrid forms of grapes have prospects for further study in order to obtain a new variety.