CHEMERYS L.N.

ESTIMATION OF RESISTANCE OF BREEDING NUMBERS OF SUGAR BEET TO LEAF DISEASES

The article deals with the resistance of CMS hybrids, tetraploid and diploid forms of sugar beet to cercosporosis and erysiphosis. There was determined that diploid materials are less resistant than tetraploid ones, and variability in diseases degree was estimated during several years. Perspective materials for hybrids which can be used in bio-adaptive technology were selected.