نتایج جستجو برای: steinernema bicornutum

تعداد نتایج: 742  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید مدنی آذربایجان - دانشکده کشاورزی 1393

با هدف یافتن نماتودهای بیمارگر حشرات، تعداد 300 نمونه از خاک¬های نواحی زراعی و غیرزراعی شهرستان جیرفت برداشته و با استفاده از روش تله¬گذاری با لارو پروانه موم خوار بزرگ galleria mellonella از نظر وجود نماتودهای بیمارگر حشرات بررسی گردید. از 300 نمونه خاک برداشته شده، 11 مورد از نظر وجود نماتود بیمارگر حشرات مثبت بودند که 6 مورد متعلق به heterorhabditis و 5 مورد، جدایه¬های متعلق به steinernema ب...

2015
Sung-Jun Hong Ihsan Ullah Gun-Seok Park Byung Kwon Jung JungBae Choi Abdur Rahim Khan Min-Chul Kim Jae-Ho Shin

Xenorhabdus nematophila strain C2-3, which belongs to the family Enterobacteriaceae, was isolated from entomopathogenic nematodes collected in the Republic of Korea. Herein, we report a 4.38-Mbp draft genome sequence of X. nematophila strain C2-3, with a 43.6% G+C content. The RAST annotation analysis revealed 4,994 protein-coding sequences in the draft genome.

Journal: :Journal of nematology 1985
G B Dunphy T A Rutherford J M Webster

Three Xenorhabdus nematophilus subspecies influenced Steinernema glaseri growth profiles and growth rates, but this was not necessarily because of different bacterial growth rates. Virulence of dauer nematodes in larval Galleria mellonella varied with the number of dauers retaining bacteria and the bacterial subspecies. Virulence was least for dauers grown on X. nematophilus subsp. bovienii bec...

Journal: :Journal of nematology 1992
S R Sims A S Downing J C Pershing

Injection, contact, and soil assays were used to compare infectivity of Heterorhabditis bacteriophora strain HP88 and Steinernema carpocapsae strain All to final instar Galleria mellonella larvae. Under comparable assay conditions, H. bacteriophora produced less Galleria mortality and showed greater within-assay variability in infectivity than S. carpocapsae. Injection of individual S. carpocap...

Journal: :Journal of nematology 1989
R Gaugler T McGuire J Campbell

A systematic program of genetic improvement was initiated by assessing the phenotypic variation of Steinernema feltiae strains for two traits assumed to limit efficacy: ultraviolet tolerance and host-finding ability. All of the strains assayed showed both low ultraviolet tolerance and poor host-finding ability, indicating that the likelihood of improving these traits through more extensive popu...

Journal: :Cropsaver 2023

Spodoptera exigua is one of the main pests that attack onion. An alternative can be done to control onion caterpillars by using entomopathogenic nematode (Steinernema spp.) environmentally friendly. This research aimed obtain concentration Steinernema spp. most effective in causing mortality S. plants. The experiment was carried out from January August 2020 at Citeureup, North Cimahi, Cimahi Ci...

Journal: :Journal of bacteriology 2008
Charles E Cowles Heidi Goodrich-Blair

Members of the Steinernema genus of nematodes are colonized mutualistically by members of the Xenorhabdus genus of bacteria. In nature, Steinernema carpocapsae nematodes are always found in association with Xenorhabdus nematophila bacteria. Thus, this interaction, like many microbe-host associations, appears to be species specific. X. nematophila requires the nilA, nilB, and nilC genes to colon...

Journal: :Journal of nematology 1993
D I Shapiro E C Berry L C Lewis

Dispersal of the nematode Steinernema carpocapsae (All strain), applied on the top or the bottom of soil columns, was tested in the presence or absence of two earthworm species, Lumbricus terrestris or Aporrectodea trapezoides. Nematode dispersal was estimated after a 2-week period with a bioassay against the greater wax moth, Galleria mellonella. Vertical dispersal of nematodes was increased i...

Journal: :Journal of nematology 1994
W R Nickle W J Connick W W Cantelo

Pesta-pelletized Steinernema carpocapsae (All) nematodes were used in soil treatments in the greenhouse against larvae of Western corn rootworm and prepupae of Colorado potato beetle. The pesta-pellets delivered 100,000 living nematodes/g. Infective-stage nematodes and their associated bacteria survived the pesta-pellet process, emerged from the pellets in large numbers in the soil, and reduced...

ژورنال: :تحقیقات آفات گیاهی 2012
مهرناز رودکی مصطفی حقانی مریم فلاحی محمد عبدالهی

در سال 1389 تعدادی نمونه خاک جهت بررسی وجود نماتدهای بیمارگر حشرات، از سراسر استان کهگیلویه و بویراحمد جمع آوری شد. نماتد steinernema carpocapsae (weiser) از خاک های جمع آوری شده جدا گردید. با توجه به محدودیت کاربرد سموم شیمیایی در مبارزه با آفات انباری، یک بررسی به منظور تعیین کارآیی این نماتد روی شب پره هندی، که آفت مهم محصولات انبار است، انجام شد. در این آزمایش، لارو و شفیره شب پره هندی در ش...

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