Material and Methods of research
Faunistic research was conducted by a conventional
route method [2, 3–11]. The material phytohelmintholog-
ical research were samples of wheat plants and rhizosphere
soil collected in 16 districts and 48 farms in Surkhandarya
and Kashkadarya regions. In each region in order to collect
the material were chosen three farms. Field studies were
carried out in the period from 2012 to 2015.
In the route faunal studies all 864 soil and 3438 plant
samples were collected. To isolate nematodes from soil
and plant organs we used a modified Infundibular meth-
od of Berman. Soil samples for the presence of cyst form
nematodes we usually analyzed according to the method
of Dekker [3, 221–237].
For fixing the nematode 6.4% formalin, and glycerol
formulations were prepared according to the procedure
of Seinchorst [4, 57–69].
In determining the species of plant nematodes accesso-
ries were used works of domestic and foreign authors, as well
as phytonematodes atlas, compiled by the Institute of Parasi-
tology, Republican Academy of Sciences, as well as we used
morphometric parameters obtained by the standard formula
de Mann according to Micoletzky modification [5, 16–38].
The degree of dominance of nematodes in plant
and soil samples was determined by the percentage of
specimens of individual species among all detected. At
the same time the dominant species or eudominants are
up more than 10% of the number of detected, domi-
nants — 5,1–10%, subdominants — 2,1 5%, less than
2.1% subrecedent individuals [2, 3–11].
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