EVALUATION OF RESISTANCE OF POTATO VARIETIES OF FOREIGN SELECTION TO GLOBODERA

Abstract

Under the vegetation experiment, two susceptible potato varieties (Sineglazka, Udacha) and 11 varieties of foreign selection were grown in the soil infected with golden potato nematode (Globodera rostochiensis) (more than 4 thousand eggs and larvae of Globodera rostochiensis per a 800 cubic cm vessel). On the 70th day after the emergence of seed potatoes on the surface of the ball of soil, 53 white and yellow Globodera rostochiensis females were found on the roots of the susceptible Sineglazka variety, and 17 females were found on the ball of soil of the standard Udacha variety, which may be explained by weak development of the root system due to rotten tubers. As a result of foreign potato varieties evaluated for resistance to Globodera rostochiensis, it was found that all tested potato varieties Riviera, Excellence, Bellarosa, Rocco, Arizona, Evolution, Impala, Picasso, Arrow, Veneta and Coletta were resistant to the Vladimir population of the golden potato nematode Globodera rostochiensis of the pathotype Ro1. One to three Globodera rostochiensis females were found on the roots of varieties Excellence, Bellarosa, Rocco, Arizona, Impala, Veneta and Coletta. Six females of Globodera rostochiensis were identified in the Arrow variety. Females were not found on the roots of varieties Riviera, Evolution and Picasso.