Evaluation of sugar beet cultivars in agro ecological Miandoab region using multivariate statistical techniques in drought stress

In order to assessment of sugar beet varieties by using multivariate statistical methods in agro ecological conditions mentioned in normal and drought conditions a field study was conducted in Agriculture research center in Miandoab during year of 2014.Result of combine analysis showed environment had significant effect Root yield, sugar content, the amount of sodium root, white sugar content, sugar yield, alkaline extraction of sugar and molasses. Difference between genotypes for all traits, except for the amount of potassium was significant. The interaction between environment and genotype had significant on all pages except white sugar yield. In represent study in normal and drought conditions white sugar yield had positive and significant correlation root yield, root potassium concentration, sugar yield and extraction of sugar. Based on cluster analysis genotypes were classified in 4 clusters under normal conditions that genotypes in cluster 2 had highest amount of root yield, sugar yield, the percentage of sugar white and white sugar yield than the average of the whole clusters and lower amount of sodium, potassium, amino nitrogen and molasses than average of the whole clusters. in drought stress genotypes were classified in 4 clusters that group of 3 had highest value of root yield, sugar percentage, amino nitrogen, the percentage of white sugar, sugar yield, extraction of sugar and white sugar yield than the average and had lower amount of sodium, sugar molasses and alkaline than average. The results of factor analysis showed in normal and drought conditions 2-factor were identified that explained 97.77 and 94.85 per cent of the total variance in the two conditions respectively.