In order to evaluate quantitative and qualitative characteristics of different genotypes of sugar beet to rhizomania disease in Miandoab conditions 16 sugar beet genotype were ovulated in Agriculture research center in Miandoab during the 2014-2015 seasons. Experiment design was randomize bloke with six replications. Genotypes were exposed to natural infection area. In this experiment trait such growth rate, uniformity of roots, yellowing score, infection rates, severity rates, root yield, sugar content, sodium, potassium and amino nitrogen roots, white sugar content, sugar yield, alkaline, coffenetic of sugar extractions, white sugar yield and molasses content were measured. The results showed that between genotypes for all traits except for sugar percentage, alkaline and molasses was a significant difference. Result of means compare revealed genotype number of 33538 and 33540 showed high infection percent compare with other genotypes by average of 39.26 and 39.16 percent, furthermore genotype of F-20680 showed lowest of infection. In this study, there was no significant difference between the resistant genotypes of F-20680 with 33533 and 33551 genotypes in terms of infection rates, root yield, sugar yield and white sugar content. Therefore these two genotypes are recommended for other disease-breeding programs. Finally white sugar yield had positive and significant correlation with root uniform, root yield and white sugar and cougar yield and had negative and significant correlation with Sodium and alpha-amine.
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