Zakharchuk N. Phytotoxic metabolites of Phytophthora infestans and their using in creation of the resistance forms of potato

Object - fungus Ph. infestans, its metabolites and variety of a potato with different resistance to late blight. Methods - phytopathologycal, physico-chemical, biotechnological, selection. The novelty - is designed a technique of allocation and clearing phytotoxic of metabolites Ph. infestans, which one bases on cultivation of pathogen in a fluid medium Henninger during 18 day (beginning of a fixed phase) and deposition of metabolites by ammonium sulphate (0,7 saturations) with the subsequent gel - fractionating on "Sephadex" G-75. PTM Ph. infestans, used as the selective factor in concentrations 0,5-5,0 mg/mls, are capable to improve stability of plants of a potato to late blight. Results - the prospects of usage of methods of cell-like selection with PTM is justified Ph. infestans as than the selective factors, for creation of breeding material and varieties of a potato with heightened (on 2-4 balls is higher basic varieties) immunity to pathogen in a complex with other useful tags and engaging it in selection practice. Branch - phytopathology, an agriculture, breeding.