نتایج جستجو برای: igrs

تعداد نتایج: 130  

Journal: :Horticulturae 2023

Panax ginseng Meyer is an important medicinal crop; however, most farmers cultivate native species that are not genetically fixed. Although several cultivars have been developed in Korea, distribution to remains insufficient given their low propagation characteristics. This study compared the efficiency of seed production and micropropagation via somatic embryogenesis. Seeds were collected from...

2018
Tomas Linder

A new expression cassette (EC0) consisting of the fused 5' and 3' intergenic regions (IGRs) of the Eremothecium cymbalariae translational elongation factor 1α (EcTEF1) gene was evaluated through expression of the bacterial hygromycin B phosphotransferase (hph) resistance gene in the common baker's yeast Saccharomyces cerevisiae. Progressively shorter versions of the hph-containing EC cassette (...

Journal: :Journal of economic entomology 2007
Nilima Prabhaker J G Morse S J Castle S E Naranjo T J Henneberry N C Toscano

Laboratory studies were carried out to compare the toxicity of seven foliar insecticides to four species of adult beneficial insects representing two families of Hymenoptera: Aphelinidae (Aphytis melinus Debach, Eretmocerus eremicus Rose & Zolnerowich, and Encarsiaformosa Gahan) and Mymaridae (Gonatocerus ashmeadi Girault) that attack California red scale, Aonidiella aurantii (Maskell); sweetpo...

2012
M. A. TAnAni K. S. GhoneiM

Newly molted last (5th) instar of the desert locust, Schistocerca gregaria (Forsk.), was treated through fresh plant food with 2 concentrations: high (1000.0 ppm) or low (62.5 ppm) of 3 IGRs: pyriproxyfen, tebufenozide, and lufenuron. Carbohydrate content was determined in the hemolymph and in the fat body of the early-aged, mid-aged, and late-aged 5th instar, as well as of 1and 4-d old adult f...

2016
Fangyuan Zhou Guodong Zhu Haipeng Zhao Zheng Wang Ming Xue Xianxian Li Huaqiang Xu Xiaodan Ma Yanyan Liu

The onion maggot, Delia antiqua, is a devastating pest of liliaceous crops and current control measures fail to avert pesticide residues, threats to agroecosystem, and costly expenditures. Insect growth regulators (IGRs) are used as trypetid pest chemosterilants for their suppression on adult fertility and fecundity, but their effects on onion flies are unknown. Here, three IGRs (lufenuron, cyr...

2008
Hinda Berghiche Moufida Houamria Sandrien Van de Velde Noureddine Soltani Guy Smagghe

RH-0345 (halofenozide), a bisacylhydrazine derivative, is a nonsteroidal ecdysteroid agonist that mimics the action of the moulting hormones, while KK-42, an imidazole compound, is a potent inhibitor of ecdysteroid biosynthesis. Previous results suggested that the observed reduction of ecdysteroid titre, leading to a reduction of reproductive capacity in the mealworm Tenebrio molitor, is due to...

2016
Gao-Peng Song De-Kun Hu Hao Tian Ya-Sheng Li Yun-Shen Cao Hong-Wei Jin Zi-Ning Cui

A pair of chemical isomeric structures of novel N-tert-butylphenyl thenoylhydrazide compounds I and II were designed and synthesized. Their structures were characterized by MS, IR, (1)H NMR, elemental analysis and X-ray single crystal diffraction. The regioselectivity of the Meerwein arylation reaction and the electrophilic substitution reaction of N-tert-butyl hydrazine were studied by density...

Journal: :journal of arthropod-borne diseases 0
s sulaiman department of biomedical science, faculty of allied health sciences, universiti kebangsaan malaysia, jalan raja muda abdul aziz 50300 kuala lumpur, malaysia sh hidayatul department of parasitology and medical entomology, faculty of medicine, universiti kebangsaan malaysia, jalan raja muda abdul aziz 50300 kuala lumpur, malaysia mustakim syed-mustaffa department of biomedical science, faculty of allied health sciences, universiti kebangsaan malaysia, jalan raja muda abdul aziz 50300 kuala lumpur, malaysia j jeffery department of parasitology and medical entomology, faculty of medicine, universiti kebangsaan malaysia, jalan raja muda abdul aziz 50300 kuala lumpur, malaysia

background:  the residual effect of triflumuron and pyriproxyfen on musca domestica l larval stages was studied in the laboratory. methods : both igrs at varying concentrations ranging between 0.5 to 2.5 mg/l were placed inside beakers with mice chow and vitamin b complex and water as food for the 1 st , 2 nd and 3 rd instars m.domestica larvae. results: both igrs inhibit m. domestica adult eme...

Journal: :Pest management science 2012
Siddharth Tiwari Paul J Clayson Emily H Kuhns Lukasz L Stelinski

BACKGROUND Diaphorina citri populations in Florida are developing resistance to commonly used neurotoxic insecticides. Alternatives to neurotoxins, such as insect growth regulators, are needed to control this season-long subtropical pest to prevent or delay development of insecticide resistance. In the present investigation, two insect growth regulators (IGRs), buprofezin and diflubenzuron, wer...

ژورنال: علوم آب و خاک 2008
سیدالاسلامی, حسین, حاتمی, بیژن , خسروی, ملیحه , طالبی جهرمی, خلیل , عبادی, رحیم ,

In this study diflubenzuron as a chitin synthesis inhibitor with a dosage of 25 mg A.I/L, and Pyriproxyfen as a juvenile hormone analogue with a dosage of 0.4 mgA.I/L were incorporated in the wax diets of young and last instar larvae of greater wax moth and reared at different temperatures (25, 30, 35°C). Results showed that these compounds in comparison with control increased larval mortality....

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