Virus diseases of potatoes in the North-West of Russia
Keywords:potato, seed planting, infection, immunochromatographic kit, rapid detection, virus, bacteriosis, ELISA
Potato is one of the most affected crops. It is often damaged by diseases caused by fungi, phytoplasmas, bacteria and nematodes, including quarantine objects. A complex of viruses are among the most dangerous pathogens. More than 37 species can infect potatoes under natural conditions. The article presents the results of monitoring seed potatoes fields to identify and clarify the species composition of viral infections in the period of 2017–2018 in the North-West region of Russia: Novgorod, Pskov, Vologda regions. On the basis of laboratory testing by ELISA, IHA for the rapid determination of Y-, S-, M-, A-X-viruses of potatoes and leaf curl viruses were analyzed 430 samples (leaf test). The prevailing damage of plants by Y-potato virus (Y0, Yn) on the plantings of all categories was observed. As for concominant diseases, an increase in the occurrence of bacterioses was noted, namely ring rot caused by Clavibacter michiganensis subsp. sepedonicus and blackleg caused by Dickeya dianthicola.