DISTRIBUTION OF SPECIES OF THE GENUS MELOIDOGYNE GOELDI, 1887 IN THE TASHKENT OASIS OF UZBEKISTAN
Аннотация
Infection of plants with nematodes is still one of the main limitations of crop
 productivity. The research material is the infected rhizosphere and the roots of
 various plant crops collected on farms and personal subsidiary plots of the Tashkent
 Oasis. Four species of Meloidogyne Goeldi, 1887 were found in the study area in
 the Tashkent Oasis: M. arenaria, M. javanica, M. incognita, and M. hapla. It was
 established that infection of plants with nematodes depended on the characteristics of
 plant resistance, as well as soil and climatic conditions of the study region. However,
 the degree of occurrence of individual species on plants varied significantly. In terms
 of distribution of nematode species in the closed soil conditions of the Tashkent
 Oasis by districts and cities, M. arenaria was determined to be the most common
 species, whereas the least common species was M. javanica. The highest infection
 with nematodes of the genus Meloidogyne in the districts of the Tashkent Region was
 64.0% on personal subsidiary farms of the Yangiyul District, and the lowest infection
 was 12.5% on personal subsidiary farms of the Buka District. M. arenaria is the most
 common species in the Tashkent Oasis, and M. javanica is the least common species.
 M. arenaria and M. incognita are dominating species, M. hapla is common, and M.
 javanica is rare.