Root-knot nematodes and the process of ageing in plants.

Infection of plants by root-knot nematodes is often accompanied by physiological changes characteristic of ageing. Ultra-low tissue luminescence of infected plants indicated oxidation of cell-membrane lipids. Cells with membranes subjected to oxidation lose some of their capacity for water retention.

Historical development of nematology in Russia.

The development of Russian hematology is considered from the late nineteenth century to 1970. The dominant influences of I. N.