Fruit growing
and viticulture of South Russia

Annotation

For theoretical and especially practical viticulture, the information related to the ampelographic characteristics of cultivated grape varieties in the specific areas are of interest always, and especially when the results of applying the modern mathematical methods are included. An ampelographic study of table vine cultivars grown in South Bulgaria has been conducted through the application of modern mathematical methods of analysis. It has been found that Victoria grapes is characterized by the highest fertility coefficient. The percentage of fruiting shoots is the highest in Matilda, and the percentage of angular buds developed � in Rousse Large and Pance Prekos. The greatest weight of 100 berries has been reported in Palieri, Danube and Rousse Large grape varieties. The share of the skins in the berries is the most considerable in Bolgar, and the share of seeds � in the Muscat Hamburg. The sugar content of grape berries is the highest in Muscat Hamburg, while the titratable acids are the highest in Italy and Pance Prekos. Danube and Italy grapes are the most suitable for transportation. The study carried out has been shown that the yield per vine and per decare is the greatest in Danube and Victoria. A dominant influence the distribution of the studied cultivars into clusters, according to their genetic remoteness, is exerted by the indicators with maximum factor weight � fertility coefficient, percentage of fruiting shoots, weight of 100 berries, force of berry tearing and grape yield. The results can be used in agricultural technology and breeding with dessert grape varieties.