نتایج جستجو برای: alternaria alternata f sp lycopersici

تعداد نتایج: 422473  

2012
RAMESHA C. SRINIVAS

Endophytic fungi found inside the plant tissue are endosymbionts, protecting their host from pests, pathogens, etc. Twenty eight endophytic fungi were isolated from different parts of Nerium oleander L., out of which, 54% of isolates were from flower, 39% from stem and 7% from leaf parts. Thirty six percent of the isolates showed antimicrobial activity against tested pathogens. The potential is...

2007
A. K. Singh M. B. Pandey U. P. Singh

An allosecurinine alkaloid was assayed against spore germination of some saprophytic and pathogenic fungi e.g., Alternaria alternata, A. solani, A. brassicicola, A. brassicae, Curvularia lunata, C. pallescens, C. maculans, Curvularia species, Colletotrichum species, C. musae, C. gloeosporioides, Erysiphe pisi, Fusarium udum, Helminthosporium echinoclova, H. pennisetti, H. spiciferum, and Hetero...

Journal: :حفاظت گیاهان 0
اسماعیل زاده اسماعیل زاده سلیمانی سلیمانی روحانی روحانی

abstract application of chemicals which activate plant defense mechanisms before pathogen attack without environmental side effects of protective chemical agents have stimulated great deal of researches in this area. one of the important crops in the world is tomato and recently recognized as a model plant for plant-pathogen interactions. tomato early blight is one of the most devastating disea...

ژورنال: :زیست فناوری گیاهان زراعی 0
محمد علی ابراهیمی دانشیار گروه بیوتکنولوژی کشاورزی، دانشگاه پیام نور، تهران شیوا اله یار پارسا کارشناسی ارشد بیوتکنولوژی کشاورزی، دانشگاه پیام نور، تهران سعیده پیرایش دکتری بیماری شناسی گیاهی، گروه بیماری شناسی گیاهی، دانشکده کشاورزی و منابع طبیعی، واحد علوم و تحقیقات تهران، دانشگاه آزاد اسلامی، تهران

دستیابی به اطلاعات مولکولی و ژنتیکی توانسته است بسیاری از چالش های علوم زیستی را در جنبه های مختلف حل کند. روش های کاربردی بسیاری جهت استخراج dna از بافت های جانوری و گیاهی و سایر موجودات زنده شناسایی و معرفی شده است.، در بسیاری مطالعات ژنتیکی در جوامع میکروبی، اغلب نیاز به استخراج مستقیم dna از خاک است. در این تحقیق پس از مطالعه دقیق روش های مختلف پیشنهادی، سه روش (شیمیایی- آنزیمی)، (شیمیایی- ...

2016
MZ Hoque AM Akanda MIH Miah MKA Bhuiyan MG Miah F. Begum

Introduction Jujube (Ziziphus mauritiana Lam.) tree is subjected to attack by different fungal pathogens causing various diseases. In India, powdery mildew (Oidium sp.) causes defoliation and fruit-drop. Sooty mold (Cladosporium zizyphi) causes leaves to fall. Leaf spot results from infection by Cercospora spp. and Isariopsis indica var. zizyphi. Leaf rust, caused by Phakopsora zizyphi-vulgaris...

Journal: :Memorias do Instituto Oswaldo Cruz 2002
Márcia de Senna Nunes Sales Gisela Lara da Costa Vânia Rita Elias Pinheiro Bittencourt

The objective of this study was to isolate and identify fungal species found in natural association with adults of Musca domestica. The adult insects were collected from two natural breeding grounds: hog pens and an urban sanitary landfill. The isolated fungi were identified as: Aspergillus flavus (23.8%), A. niger var. niger (14.4%), Penicillium corylophilum (21.4%), P. fellutanum (11.9%), Cla...

2006
D. K. Singh S. Ameer Basha B. K. Sarma V. B. Pandey J. S. Srivastava

Phytoterpenoid isolated from Artabotrytis odoratissimus inhibited spore germination of some plant pathogenic as well as saprophytic fungi e.g. Alternaria alternata, A. solani, Cercospora sp., Curvularia maculans, C. pennisetti, Fusarium udum, Helminthosporium echinochlova, H. frumentacie, H. penniseti and Ustilago cynodontis. In Curvularia maculans and H. frumentacie, spore germination was comp...

Journal: رستنیها 2001
D. ERSHAD, H. RIAHI, M. GOOYA

During 1997- 99 one seed samples of each 17 sesame cultivars (totally 17 samples) were collected from 10 localities in Iran. Blotter method and culture media (PDA, PMA, WA, CA, SNA, CLA, CYA, KCLA, WALM, MEA) were used to isolate and identity the mycoflora present on different parts of seeds. Totally, 145 isolates were obtained which included 34 species of 15 genera. The identified fungi were: ...

2012
MADHU GUPTA REKHA BHADAURIA

Experiments were carried out to evaluate the antifungal potential of aqueous extracts of leaves, bark, seeds and fruits of Syzygium cumini against two important fungal plant pathogens, Alternaria alternata and Fusarium oxysporum. Results revealed that among various plant parts, aqueous extract of fruit was most effective against the growth of F. oxysporum as compared to other extracts whereas, ...

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