نتایج جستجو برای: trichoderma harzianum bi

تعداد نتایج: 52407  

2017
Kevin Foo Jaya Seelan Sathiya Seelan Mahadimenakbar M. Dawood

Overlooking the importance of insect disease can have disastrous effects on insect conservation. This study reported the microfungi that infect Pteroptyx bearni eggs and larvae during ex-situ rearing project. Two different species of microfungi that infected the firefly's immature life stages were isolated and identified. Penicillium citrinum infected the firefly's eggs while Trichoderma harzia...

Journal: :Applied and environmental microbiology 1996
E Margolles-Clark G E Harman M Penttila

Production of extracellular endochitinase could be increased 5-fold in the mycoparasite fungus Trichoderma harzianum by using the cellulase promoter cbh1 of Trichoderma reesei, whereas the total endochitinase activity increased 10-fold. The cbh1 promoter was not expressed on glucose and sucrose in T. harzianum and was induced by sophorose and on cellulase-inducing medium. The endogenous endochi...

Journal: :Applied and environmental microbiology 2000
M R Hermosa I Grondona E A Iturriaga J M Diaz-Minguez C Castro E Monte I Garcia-Acha

The most common biological control agents (BCAs) of the genus Trichoderma have been reported to be strains of Trichoderma virens, T. harzianum, and T. viride. Since Trichoderma BCAs use different mechanisms of biocontrol, it is very important to explore the synergistic effects expressed by different genotypes for their practical use in agriculture. Characterization of 16 biocontrol strains, pre...

حسن رضا اعتباریان فاطمه ناصری نسب, نوازالله صاحبانی

در این بررسی، فعالیت بیوکنترلی جدایه­ی BI harzianum Trichoderma علیه  Meloidogynejavanica و توانایی آن در القاء سیستم دفاعی در گیاه گوجه فرنگی رقم ارلی اوربانا Y در آزمایشگاه و گلخانه بررسی شد. ریشه‌ی گیاهچه‌های گوجه­فرنگی در مرحله‌ی 6 برگی توسط سوسپانسیون اسپور  BI harzianum .T با غلظت 106 اسپور در میلی­لیتر و تعداد 2000 لارو فعال سن دو نماتد به ازاء هر گیاه مایه‌زنی گردید. میزان فعالیت آنزیم­...

2010
Most. Ferdousi Begum M. A. Rahman M. Firoz Alam

Trichoderma strains were evaluated under field conditions to assay their efficacy in suppressing Alternaria fruit rot disease and promoting chili plant growth. The experiment was conducted at the Botanical Garden, Rajshahi University, Bangladesh from July 2006 to March 2007. Application of Trichoderma harzianum IMI 392432 significantly (p = 0.05) suppressed the disease compared to Alternaria te...

2016

Trichoderma species are commercially applied as biocontrol agents against numerous plant pathogenic fungi due to their production of antifungal metabolites, competition for nutrients and space, and mycoparasitism. However, currently the identification of Trichoderma species from throughout the world based on micro-morphological descriptions is tedious and prone to error. The correct identificat...

2008
Hye-Min Lee Won-Chull Bak Bong-Hun Lee Hyun Park Kang-Hyeon Ka

Trichoderma spp. cause large crop losses of the cultivated shiitake mushroom, Lentinula edodes. We bred several shiitake strains that are resistant to Trichoderma spp. using di-mon mating to establish a useful method for controlling the greenmold disease. We examined the competitive ability of L. edodes against Trichoderma spp. using a dual culture system to select resistant strains. By screeni...

ژورنال: :بیماریهای گیاهی 2014
حدیث مصطفی نژاد

در این تحقیق بیست جدایه قارچ تریکودرما به عنوان عوامل بیوکنترل نماتود ریشه گرهی مورد آزمایش قرار گرفتند. ابتدا جدایه­ها در محیط کشت مایع حاوی کیتین کلوئیدال کشت شدند. سه جدایه 125، 126 و bi 10 از قارچ trichoderma harzianum بیشترین میزان فعالیت آنزیم کیتیناز را نشان دادند. بررسی شش جدایه از میان قوی­ترین و ضعیف­ترین جدایه­ها از نظر میزان فعالیت کیتیناز در کنترل نماتود در گلخانه نشان داد که همبست...

2010
A. SINGH M. N. ISLAM

Si ngh A, Islam MN (2010) In vitro evaluation of Trichoderma spp against Phytophthora nicotianae. Int. J. Expt. Agric. 1(1), 20-25. The Blank sank disease of tobacco caused by Phytophthora nicotianae results in considerable loss of the crop. This lab study aimed to investigate antagonistic activity of Trichoderma spp isolates against P. nicotianae. Three isolates of Trichoderma harzianum and on...

Journal: :حفاظت گیاهان 0
فاطمه ناصری نسب نوازاله صاحبانی حسن رضا اعتباریان

abstract in this study the effect of combination of trichoderma harzianum bi and salicylic acid were studied on root knot nematode (meloidogyne javanica) disease on tomato under green house conditions. the roots of tomato seedlings at six-leaf stage were inoculated with suspensions of fungal antagonist (106 conidia/ ml), 5mm salicylic acid and 2000 second-stage juvenile (j2). combined applicati...

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