نتایج جستجو برای: erysiphe necator
تعداد نتایج: 1420 فیلتر نتایج به سال:
Powdery mildews are a diverse group of pathogenic fungi that can infect a large number of plant species, including many economically important crops. However, basic and applied research on these devastating diseases has been hampered by the obligate biotrophic lifestyle of the pathogens, which require living host cells for growth and reproduction, and lacking genetic and molecular tools for imp...
the experimental infection of necator americanus (hook worm) in golden hamster, mesocricetus auratus
hook worm (necator americanus) is one of the major pathogenic parasites in the north of iran. neonatal hamsters 1-3 days old showed a high degree of susceptibility to necator americanus infection and the parasite reached to sexually mature stages in six weeks following skin exposure. this method could be used for production of egg, larvae and adult worms. in this study neonatal hamsters were in...
Crude extracts and active principles from medicinal plants have shown potential role in controlling plant diseases in glasshouses as well as in fields as one of the safest and ecofriendly methods. The effect of nor-securinine (an alkaloid) isolated from Phyllanthus amarus has been seen against spore germination of some fungi (Alternaria brassicae, A. solani, Curvularia pennisetti, Curvularia sp...
Habrobracon females homozygous for the mutant ebony produce about 5% mosaic progeny among fertilized eggs. The present experiment demonstrates by means of a test-cross method that in the production of these mosaics only one pronucleus is involved, and that this nucleus cleaves before union of one of its daughter nuclei with the sperm nucleus.
the erysiphaceae are obligatory parasitic fungi that cause powdery mildew disease of green space plants. during this study, powdery mildew fungi were collected and identified from different localities of ardabil landscape, iran. erysiphe rayssiae (on spartium junceum), erysiphe robiniae var. robiniae (on robinia pseudoacacia) and euoidium cf. agerati (on ageratum houstonianum)are new records fo...
سفیدک پودری از بیماریهای مهم گوجهفرنگی در مزارع و گلخانههای دنیا محسوب میشود و در ایران گونه leveillula tauricaبهعنوان تنها عامل این بیماری گزارش شده است. طی مطالعه قارچهای تیره erysiphaceae در استان اردبیل، برگهای گوجهفرنگی با علایم سفیدک پودری از گلخانهای در شهر اردبیل جمعآوری و جدایه ها بر اساس ویژگی های ریخت شناختی مورد شناسایی اولیه قرار گرفتند. سپس dna ژنومی قارچ به روش chelex 5...
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