Disease-inciting power of population of fungus Fusarium oxysporum (f. lini) on different by resistance grades of flux in conditions of North-East part of Ukraine

Abstract

The purpose. To study disease-inciting power of isolates of fungus Fusarium oxysporum (f. lini), secreted from grades of flux resistant and acquisitive to fusarial wilt. Methods. Vegetation, immunological, statistical. Results. Experimental data are given on study of the level of disease-inciting power of isolates of fungus Fusarium oxysporum (f. lini), secreted from grades of flux resistant and acquisitive to fusarial wilt. It is determined that isolates of fungus Fusarium oxysporum (f. lini), gained from grades resistant and acquisitive to disease caused their lesion with different extent of disease-inciting power. Conclusions. Isolates of fungus Fusarium oxysporum (f. lini), secreted from acquisitive grades of flux Svitoch and Tomskii 16, attack largely acquisitive grades and do not attack grades with high resistance I 7 and Aojagy. Isolates of fungus Fusarium oxysporum (f. lini), secreted from resistant grades I 7 and Aojagy, for years of researches have caused strong lesion of acquisitive to fusarial wilt grades Svitoch and Tomskii 16 as well as medium-acquisitive grades Hlinum and Charivnyi.