AGROBIOLOGICAL EVALUATION OF GRAPEVINE VARIETIES FOR WHITE AND RED WINES
A comparative agrobiological evaluation of grapevine varieties for white and red wines from different ecological-geographic groups have been done through application of mathematical methods - analysis of variance, cluster and factor analysis using R language for statistical processing. It has been established that the varieties Fetească albă, Fetească regală, Pamid, Dimiat and Mavrud differ materially according to almost all examined characteristics. The analyzed indicators in the structure of the yield in the case of the oriental varieties are summarized in five factors, in the case of those from the Black Sea – in four, which are enough to explain more than half of their total variability. With the biggest essential direct impact on the yield in the case of all varieties from the first group are the indicators from factor F3, and in the case of those from the second – F1. Other factors which are not analyzed also have an impact on the formation of their yield.