نتایج جستجو برای: Colletotrichum coccodes
تعداد نتایج: 3360 فیلتر نتایج به سال:
The phytopathogenic fungus Colletotrichum gloeosporioides produces one pectate lyase (PL) that is a key virulence factor in disease development. During growth of C. gloeosporioides, Colletotrichum acutatum, and Colletotrichum coccodes in acidified yeast extract medium, the fungus secreted ammonia and increased the medium pH. Ammonia accumulation and the consequent pH change increased as a funct...
North American isolates of Colletotrichum coccodes, representing six vegetative compatibility groups (NA-VCG), were used to study morphological and pathogenic variability. The objective was to determine if variability in conidial and microsclerotial size was related to pathogenicity. Significant differences were detected in length, width, and length/width ratios of conidia as well as in the len...
س سیبزمینی و پیاز در منطقه فریدن استان اصفهان از اهمیت ویژهای برخوردار است. بیماری خال سیاه یا آنتراکنوز از بیمارهای مهم این محصولات میباشد. در این پژوهش، از مزارع سیبژمینی و پیاز مشکوک به بیماری خال سیاه مناطق : فریدن، داران، دامنه، چادگان، رزوه و آشجرد استان اصفهان نمونهبرداری شد. نمونهها شامل بافتهای آلوده سیبزمینی (طوقه، ساقه، برگ و غده) و پیاز (برگ و فلس) بودند. ویژهگیهای ریخت...
For the past two decades, the causal agent of anthracnose occurring on strawberry in Korea was considered Colletotrichum gloeosporioides. However, the recent molecular analysis has shown that the genus Colletotrichum has undergone many taxonomic changes with introduction of several new species. As a result, it revealed that C. gloeosporioides indeed consisted of more than 20 distinct species. T...
ABSTRACT Amplified fragment length polymorphism (AFLP) using three primer sets was used to characterize 211 Colletotrichum coccodes isolates from North America, 112 of which were assigned to six vegetative compatibility groups (VCGs) using nitrate nonutilizing (nit) mutants. These isolates clustered into five corresponding groups by unweighted pairgroup method with arithmetic means-based cluste...
Eighty six isolates of C. gloeosporioides isolated from avocados from various production areas were compared using fruit inoculation studies. Differences were observed, and isolates could be grouped into three groups based on lesion size. These results are preliminary and further investigation must be carried out to confirm these findings.
بیماری خال سیاه سیب زمینی توسط colletotrichum coccodes ایجاد می شود و در اکثر مناطق کشت سیب زمینی ایران پراکنده است. عامل بیماری یکی از عوامل مهم کاهش عملکرد در مزرعه است و باعث پوسیدگی غده ها و افت وزن محصول در انبار می شود. وضعیت تنوع ژنتیکی و توان بیماری زایی این قارچ در ایران مشخص نبود. برای این منظور از مناطق عمده سیب زمینی کاری استان های اردبیل ، اصفهان و همدان اقدام به نمونه برداری از گ...
VARIABILITY IN THE PRODUCTION OF FUNGAL SPORES AND IN THE MEASUREMENT OF SPORE YIELDS WAS INVESTIGATED IN FOUR SPECIES OF FUNGI: Colletotrichum gloeosporioides, Colletotrichum coccodes, Colletotrichum phomoides, and Acremonium strictum. When the fungi were grown on solid medium in microplates and spore yields were measured by counting the subsamples with a hemacytometer, the variability among h...
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