ASSESSMENT OF WHITE GRAPE VARIETIES OF ANAPA AMPELOGRAPHIC COLLECTION PRODUCTIVITY AND QUALITY OF MUST AND WINE FROM THEM

The aim of research is to study the productivity, biochemical parameters and technological indicators of must and wine from grape varieties of the collective use center Anapa ampelographic collection AZOSViV to create Russian brands of high-quality white wines. The objects of the study are white technical grape varieties of the Anapa ampelographic collection (AAC) of the Anapa zonal experimental station of viticulture and winemaking. Various methods were used, including those developed with the participation of the center's employees. Mass concentrations of sugars in the must were determined according to GOST 27198-87, titratable acidity – according to GOST 32114-2013. Statistical data processing was carried out using Excel. The grape varieties Riesling AZOS, Barkhatny (selection AZOSViV) and the introduced Muscat White have annual high rates of fruiting coefficients, fruitfulness and productivity, and the Barkhatny variety exceeded the control in yield per bush significantly at the 95% significance level. The studied varieties, in comparison with the control Rhine Riesling, had higher sugar accumulation, which is statistically proven for the Barkhatny and Riesling AZOS grapes. Based on the GAP, the Riesling AZOS and Muscat White varieties are optimal for the production of high-quality dry white wines in the years of research. In terms of the total mass concentration of biologically active substances, wine materials from the Barkhatny and Rhine Riesling varieties (control) stood out. Wines from the AZOS Riesling and White Muscat varieties surpassed the control Rhine Riesling in several quality parameters, and most importantly in organoleptic assessment. The must of the universal Barkhatny variety for obtaining high-quality dry wine requires additional technological operations to bring its acidity to the optimal level, which will contribute, along with White Muscat, to the expansion of the line of brands of popular Muscat wines.