Устойчивый Сорт Винограда Gratitude В Климатических Условиях Ростовской Области

The paper presents the results of studying a new seedless grapevine variety, Gratitude, bred by the University of Arkansas, USA. The study examines the main agro-biological characteristics of the variety, including yield, winter hardiness, berry quality, and its potential for use in industrial vineyards under open-field cultivation. The variety trial was conducted at the experimental plots of the All-Russian Research Institute of Viticulture and Winemaking – Branch of Federal State Budget Scientific Institution «FRARC». The study em-ployed grapevine cultivation methods and technologies commonly accepted in viticulture. The vineyards are unirrigated, grafted onto Berlandieri × Riparia Kober 5BB rootstock, with a fan-shaped formation on medium trunks and a planting scheme of 3 × 1.5 meters. The Gratitude grape variety demonstrated several positive characteristics: it has a seedlessness class I, dense pulp, good sugar accumulation (up to 22 g/100 cm³) with relatively high acidity (over 7 g/dm³). The average cluster weight is 258 grams, and the average berry weight is 3.8 grams. Gratitude is technologically adaptable, characterized by medium vine growth vigor, and the annual growth matures very well. The variety exhibits high resistance to diseases (rated 2.0–2.5 points). Results showed that Gratitude has an early-medium ripening period (128 days from bud break to full berry maturity). Despite its low yield and limited winter hardiness, Gratitude has some potential for raisin production due to its dense fleshy pulp, good sugar accumulation, and berries that do not fall off. Future research may focus on examining the impact of various agricultural practices on the productivity and quality of this variety in covered cultivation, and consider using Gratitude in breeding seedless varieties as a source of disease resistance.