Methods of sunflower estimation on resistance to dry rot

The influence of intensiveness of sunflower head affection by dry rot on agricultural valuable traits and sowing qualities of seeds was studied. The data of research are resulted in this article. The possibility to use oil acid value as indirect qualitative trait for determination of sunflower plants resistance to dry rot is proved. The scale for determination of resistance degree to esti-mate and isolate resistant forms to fungus of Rhizopus species was developed on a base of obtained results.