Ecological and Taxonomic Characteristics of Parasitic Phytonematoids Found in Rice Plants in the Southern Regions of Uzbekistan

Abstract

The course "Phytohelminthology" studies representatives of the group of animals organisms, among which there are serious pests of many s / x cultures. The name "nematodes" (nem - "thread", oides - "like") indicates the appearance of the animals of this group. These are elongated worms, round in diameter, the size of which varies enormously. As well as small (0.1-0.2 mm long) types of roundworms are such as e.g. some parasites of warm-blooded animals, lengthwhich to- reaches up to 8 meters and they are in the placenta of cetaceans. All nematodes are environmentally practical and therefore are widely distributed strangers all over the globe. So, free-living nematodes live in the seas, in fresh water swing and in the soil. Not a single saprobiological can do without the participation of nematodes. sky process. Typically 100 cm3 arable soil 4000-5000 nematodes, species the composition of which will largely depend on the soil and climatic factor and plantabout the cover. In the soil, nematodes make up 90% from all discovered multicellular living organisms. Many nemato- they adapted to life in other organisms and became obligate or optional parasites. From the general helminthological science, which comprehensively studies parasitic worms and diseases associated with them in the human body and animals, a special direction stands out - phytohelminthology, which studies plant parasites and diseases identified by them and takespro intermediate place between entomology and phytopathology.