Keywords
Abstract
The article presents ampelographic description and results of studies in 2018–2021 on assessing of economically valuable traits of new wine grapevine cultivar of medium ripening bred in the Institute Magarach – ‘Yantarnyi Magaracha’, obtained by crossing of ‘Kok Pandas’ x ‘Spartanets Magaracha’ varieties. It is established that in the studied population, in terms of the fruiting coefficient, 33.3 % of seedlings exceed the average population value (K = 0.95), reaching an average of 0.97–1.22. According to the average bunch weight, this indicator in 33.0 % of seedlings is observed to exceed the average population value from 175.0 to 210.0 g. The indicator of mass concentration of sugars exceeds the average population value in 40.0 % of seedlings, varying from 234.0 to 259.0 g/dm3. In 33.3 % of seedlings in the population, shoot productivity in accordance with raw bunch weight exceeds the average population value from 161.0 to 256.0 g/shoot. The studies were carried out in the breeding plot of Vilino village, Bakhchisaray district. In the course of studying this population, the seedling Magarach No. 11-08-13-3 (a new grapevine cultivar
‘Yantarnyi Magaracha’) is identified as the elite. Its average bunch weight is 242.0 g, the yield per bush is 4.28 kg, the maximum bunch weight is 252.0 g, the average weight of a berry is 2.2 g. In terms of such indicators as the average bunch weight, mass concentration of sugars, yield per bush, the cultivar ‘Yantarnyi Magaracha’ (GF No. 11-08-13-3) exceeds the control variety ‘Aligote’. The average tasting score of table base wines is 7.71 points, dessert base wines - 7.80 points. Application No. 84688/7853112 with priority date 25.10.2021 is submitted to the State Commission of the Russian Federation for Testing and Protection of Breeding Inventions to register and issue the patent for breeding invention “Yantarnyi Magaracha Grapevine Cultivar”, which will allow enriching the assortment of wine grape cultivars of medium ripening.