Results of the research
In the study period, on wheat and its rhizosphere soil
we found 158 species of plant-parasitic nematodes be-
longing to 3 subclasses, 8 orders and 25 families.
In our material Adenophorea subclass represented by
3 orders: Enoplida, Mononchida, Dorylaimida. Enoplida
order contains only one family with two rarely occurring
species:
Trishistoma monohystera, Tobrilus kirjanova. In the
order of Mononchida there are two families contained one
type of each. Dorylaimida order represented 6 families:
Dorylaimidae, Qudsianematidae, Discolaimidae, Apor-
celaimidae, Xiphinematidae, Leptonchidae, among which
the most diverse in species composition is Qudsianema-
tidae (4 species), Aporcelaimidae (4), Dorylaimidae (4).
The rest of the families contain 1–2 species.
Chromadoria subclass presented 2 orders: Monhys-
terida, Plectida. Monhysterida order represented by one
family Monhysteridae, and the other order family Plecti-
dae. Monhysteridae family includes freshwater species:
Monhystera simplex, Geomonhystera villosa. The family
Plectidae is represented by four rarely occurring species.
Rhabditia subclass includes Rhabditida, Aphelenchi-
da, Tylenchida orders. Rhabditida order includes 3 fami-
lies: Cephalobidae, Panagrolaimidae, Rhabditidae. Among
the above families of the greatest species diversity ob-
served in the family Cephalobidae (28 species), the family
Panagrolaimidae contains 14, Rhabditidae — 10 species.
Aphelenchida order represented by 4 fami-
lies: Aphelenchidae, Paraphelenchidae, Aphelen-
choididae, Seinuridae and 40 species, 33 of which
belong to the family Aphelenchoididae, 5 — to Aphelen-
chidae, one by one — Paraphelenchidae and Seinuridae.
Tylenchida order includes 40 species belonging to
7 families: Tylenchidae (10 species), Dolichodoridae
(4), Psilenchidae (2), Hoplolaimidae (3), Pratylenchi-
dae (4), Neotylenchidae (5), Anguinae (12).
On a variety of species and number of individuals
among the orders allocated Rhabditida, containing more
than 32% of all detected species and 61% of individu-
als of phytonematodes. Aphelenchida and Tylenchida
orders comprise 25.3% of the species, 22.6% and 14.3%
of individuals nematodes. All other orders in the fauna of
wheat presented rarely occurring and few species.
Phytohelmintological research in grain in southern regions of Uzbekistan
7
In the root soil of wheat dominated types (in de-
scending order):
Panagrolaimus rigidus (popular type), P.
subelongatus, Chiloplacus sclerovaginatus, Aphelenchoides
parietinus, A.composticola, Rhabditis brevispina, Ditylenchus
dipsaci, Acrobeloides nanus, A.buetshlii, Cepholobus persegnis,
Pratylenchus pratensis, Bitylenchus dubius, Tylenchorhynchus
brassicae, (total 13 species). The roots of wheat dominant
species are absent; to a frequently met species belong:
Aph‑
elenchus avenae, A. parietinus, P. rigidus, D. dipsaci, Chilopla‑
cus propinquus, Rh. brevispina, A. composticola, A. nanus, Ch.
sclerovaginatus, P. subelongatus (total 10 species).
The species composition of plant nematodes, and
soil rhizosphere of wheat is significantly different from
each other both in terms of species composition and on
the number of individuals. In wheat rhizosphere soil it
was recorded 15035 nematode species belonging to the
149 species. Of which often met
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