منابع مشابه
political economy of china in central asia
this research is about the political economy of china in central asia. in this research the political & economic interactions affected on chinas political economy in central asia are examined. chinas goal of presence in central asia including political-security, economic and energy goals is described in one part. in another part, the trade relations between china and central asian countries ar...
15 صفحه اولDetection and Identification of Tomato Ring Spot Virus in Ornamental Plants in North Khorasan Province
In recent years, the symptoms of viral diseases such as dwarfism, mosaic, discoloration, necrosis, and circular spots have been prevalent in ornamental plants in parks, gardens, and streets in North Khorasan Province. Tomato ring spot virus (ToRSV) belongs to the Nepovirus genus of Secoviridae family. This virus is a major cause of the infection of ornamental plants in the world. In this study,...
متن کاملBiological and Molecular Characterization of an Isolate of Pelargonium Zonate Spot Virus Infecting Sunflower in Argentina
Sunflower (Helianthus annuus) plants showing chlorotic concentric rings and line patterns on the leaves were observed in field crops near Paraná city (Entre Ríos, Argentina). Virus-enriched preparations examined with a trasmission electron microscope contained quasi-spherical particles ca. 33 nm in diameter. Symptomatic sunflower samples were serologically negative for six known members of the ...
متن کاملSources of Iris yellow spot virus in New York
Hsu, C. L., Hoepting, C. A., Fuchs, M., Smith, E. A., and Nault, B. A. 2011. Sources of Iris yellow spot virus in New York. Plant Dis. 95:735-743. Iris yellow spot virus (IYSV) has been found consistently in commercial dry bulb onion fields throughout New York State since 2006. Yearly recurrence of IYSV may result from annual reintroductions of the virus or persistence of the virus in overwinte...
متن کاملDisease Note First Report of Tomato Infectious Chlorosis Virus from Tomato in Apulia, Southern Italy
A severe disease of tomato was observed in 2010 in a greenhouse in the province of Lecce (Apulia, southern Italy). Plants showed interveinal yellowing and thickening of mature leaves and a bushy appearance of the new growth. Pale-yellow spots, which became sunken and necrotic, were scattered on the fruit surface. Leaf symptoms were reminiscent of those induced by Tomato chlorosis virus (ToCV) o...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2015
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis-09-14-0885-pdn