نتایج جستجو برای: rhizoctonia solani گروه آناستوموزی 4

تعداد نتایج: 1399484  

Journal: :Phytopathology 2016
Carl A Strausbaugh

Rhizoctonia root and crown rot is an important disease problem in sugar beet caused by Rhizoctonia solani and also shown to be associated with Leuconostoc spp. Initial Leuconostoc studies were conducted with only a few isolates and the relationship of Leuconostoc with R. solani is poorly understood; therefore, a more thorough investigation was conducted. In total, 203 Leuconostoc isolates were ...

2013
MANJU RANI J. S. RANA K. K. DAHIYA VIKAS BENIWAL

Rhizoctonia solani (Kuhn) is one of the most important cotton crop pathogens. Rhizoctonia solani anastomosis groups (AGs) 7 and 4 are proven to be the most common pathogenic fungal strains on cotton crop. AG-7 can cause root rot in plants while damping-off of seedlings is most frequently attributed to AG-4. Sequencing of the ITS (Internal Transcribed Spacer) region of ribosomal DNA was performe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد 1377

طی سال زراعی 1376 از مجموع 21 مزرعه سیب زمینی، تعداد 256 نمونهء آلوده گیاهی جمع آوری گردید و پس از کشت قسمت های از ساقه، استولن، ریشه و غده کاملا 105 ایزوله که مشخصات مرفولوژیکی آنها مشابه قارچ rhizoctonia بود شناسایی گردید، که پس از رنگ آمیزی هسته ها و بررسی واکنش آناستوموز هیف ها، به روش agarfilm با ایزوله استاندارد ag(1-11,bi) بجز ag8, ag10 نتایج زیر بدست آمد: 71/5 درصد ایزوله شناسایی شده مت...

Journal: :Applied and environmental microbiology 1985
M F Allen M G Boosalis E D Kerr A E Muldoon H J Larsen

Rhizoctonia solani causes crown rot of sugar beets, a severe disease that has destroyed up to 60% of the plants in a test field in western Nebraska. Laetisaria arvalis, a natural hyperparasite of Rhizoctonia spp., was isolated from fields in western Nebraska. To test for the potential for biological control of R. solani, in November 1980 (following harvest) we applied various combinations of a ...

2017
Nguyen Van Minh E-Eum Woo Gang-Seon Lee Dae-Won Ki In-Kyoung Lee Sang-Yeob Lee Kyeonghun Park Jaekyeong Song Jae Eul Choi Bong-Sik Yun

Ginseng damping-off, caused by the fungal pathogens Rhizoctonia solani and Pythium sp., is a critical disease in ginseng seedling. In a continuing effort to find microorganisms with the potential of acting as a biocontrol agent against Rhizoctonia damping-off, we found that a Streptomyces sp. A501 showed significant antifungal activity against Rhizoctonia solani. In field experiment to test the...

ژورنال: گیاه پزشکی 2013

به منظور مطالعه عوامل قارچی همراه باپوسیدگی ریشه و طوقه کلزا در استان خوزستان ،طی سال زراعی 86-1385 از گیاهان کلزای دارای علائم پوسیدگی ریشه و طوقه از نقاط مختلف استان نمونه برداری شد.از اندام های آلوده کلزا قطعات کوچکی جدا و  بعد از سترون نمودن با اتانول 75 درصد ، روی محیط کشت PDA قرار داده و تعداد167 جدایه قارچی جداسازی شد. جدایه ها متعلق به جنس های فوزاریوم، سیلندروکارپون ، فوما و ریزوکتونیا...

Journal: :Mycologia 2008
Dilip K Lakshman Savithiry S Natarajan Sukla Lakshman Wesley M Garrett Arun K Dhar

Rhizoctonia solani (Teleomorph: Thanatephorus cucumeris, T. praticola) is a basidiomycetous fungus and a major cause of root diseases of economically important plants. Various isolates of this fungus are also beneficially associated with orchids, may serve as biocontrol agents or remain as saprophytes with roles in decaying and recycling of soil organic matter. R. solani displays several hyphal...

Journal: :Fungal genetics and biology : FG & B 1999
U L Rosewich R E Pettway B A McDonald H C Kistler

To date, much of the genetics of the basidiomycete Thanatephorus cucumeris (anamorph = Rhizoctonia solani) remains unknown. Here, we present a population genetics study using codominant markers to augment laboratory analyses. Seven single-copy nuclear RFLP markers were used to examine 182 isolates of Rhizoctonia solani AG-1 IA collected from six commercial rice fields in Texas. Thirty-six multi...

2017
Kalaivani Nadarajah Nurhani Mat Razali Boon Huat Cheah Nur Syafiqah Sahruna Ismanizan Ismail Madhura Tathode Kiran Bankar

Sheath blight, caused by Rhizoctonia solani anastomosis group 1 subgroup 1A (AG1-1A), is one of the most devastating rice diseases worldwide. Here, we report the draft genome sequence of R. solani AG1-1A strain 1802/KB isolated from a popular Malaysian rice variety. To the best of our knowledge, this is the second reported representative genome from AG1-1A.

Journal: :Journal of bacteriology 1966
D Gottlieb J L Van Etten

Gottlieb, David (University of Illinois, Urbana), and James L. Van Etten. Changes in fungi with age. I. Chemical composition of Rhizoctonia solani and Sclerotium bataticola. J. Bacteriol. 91:161-168. 1966.-The chemical composition of the mycelium of Rhizoctonia solani and Sclerotium bataticola was determined in cells of various ages. The percentage, per unit of dry weight, of soluble amino nitr...

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