Оцінка стійкості картоплі до збудників хвороб, поширених в Україні

Abstract

Goal. To evaluate and select potato varieties of domestic selection, resistant against the causative agents of cancer — Synchytrium endobioticum (Schilb.) Perc, phomous rot — Phoma exigua var. exigua (Desm.), alternariosis — Alternaria solani (Ell. & Mart.) and Alternaria alternata (Fries) Keissler. To improve promising potato varieties for introduction in seats of these diseases. Methods. Laboratory evaluation of potato varieties on artificial infectious backgrounds: causative agents of cancer, phomous rot, and alternariosis. Improvement and reproduction of potato varieties were carried out by the method of in vitro culture on Murasighe-Skug nutrient medium. Results. According to the results of laboratory tests in 2019–2021, 8 varieties resistant to all pathotypes of the causative agent of cancer were selected from 28 potato varieties; 4 — to phomous rot; 6 — to alternariosis. 14 potato varieties of domestic selection, which had signs of resistance to several diseases, were improved. Conclusions. According to the results of 3-year laboratory tests, potato varieties were selected with resistance to potato cancer pathogens — Bazys, Hlazurna, Rodynna, Misteria, Santarka, Solokha, Strumok, and Khortytsia; phomous rot — Ariya, Misteriya, Rodynna, and Sontsedar; alternariosis — Hlazurna, Kalynivska, Poliske dzhrelo, Teteriv, Fantasiya, and Yavir. 14 varieties of potato of domestic selection from the State Register of plant varieties suitable for cultivation in Ukraine in 2000–2010, which were resistant to diseases for many years, were improved and recommended for use in integrated systems of plant protection against the investigated causative agents of cancer, phomous rot and alternariosis on the territory of Ukraine.