Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 78 for “"Virus Diseases"”.
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Incidence, Distribution and Characteristics of Major Tomato Leaf Curl and Mosaic Virus Diseases in Uganda
… 1995; Hansen, 1990; Defrancq, 1989). Viral diseases are the third major cause of low tomato productivity in Uganda. Therefore, a survey was conducted; symptoms observed on tomato were categorized, and screened for both ribonucleic and deoxyribonucleic acid tomato viruses. Genetic identity …
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Control of the aphid vectors of plant virus diseases by the use of systemic intersections: Thesis submitted for the National Diploma in Horticulture N.D.H. (N.Z.)
… difference between the pathogen we now call a virus and micro-organisms He showed that the cause of tobacco mosaic virus disease could pass through a bacteria proof filter. His work was repeated by Beijerinck in 1898 who introduced his theory of a"contagium vivum fluidum'! Both he, and Baur in …
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Investigation of Methods and Mechanisms of Control of Italian Ryegrass (Lolium multiflorum) in Corn (Zea mays) and Small Grains and of the Effects of Johnsongrass (Sorghum halepense) Control on Virus Diseases in Glyphosate-Tolerant Corn
… incidence and severity of maize chlorotic dwarf virus (MCDV) and maize dwarf mosaic virus (MDMV) in response to POST johnsongrass control in two corn hybrids. Recent observations have indicated a lack of virus-tolerance in glyphosate-tolerant corn hybrids in Virginia. The rapidity of virus …
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Weeds in Sacramento County of California
… weeds and weeds may also act as hosts for fungus diseases, virus diseases and insect pests of cultivated crops. Many plants may be weeds in one locality and harmless or beneficial in other parts. The author has made a thorough study of the country's agriculture and its weeds. Latest control …
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The effect of varying mixtures of soybean and cereals on the landing rates of aphid vectors and spread of soybean mosaic virus (SMV) and maize dwarf mosaic virus (MDMV)
… foregut-borne non-persistently transmitted plant viruses such as soybean mosaic virus (SMV) and maize dwarf mosaic virus (MDMV), and also on the landing rates of the aphid vectors that transmit them. The uniqueness of this study is that it gives an insight as to how the same aphids spread two …
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Occurrances and distribution of some tobacco viruses in Southern,Central and Lusaka provinces in Zambia
… surveyed for the occurrence and distribution of virus diseases during tobacco growing season in 1997.Three tobacco fields in each province were selected for virus detection and sample collection.During this survey,infected tobacco plants were examined and disease symptoms recorded.Virus infected …
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Occurrances and distribution of some tobacco viruses in Southern,Central and Lusaka provinces in Zambia
… surveyed for the occurrence and distribution of virus diseases during tobacco growing season in 1997.Three tobacco fields in each province were selected for virus detection and sample collection.During this survey,infected tobacco plants were examined and disease symptoms recorded.Virus infected …
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Grapevine Viruses and Associated Vectors in Virginia: Survey, Vector Management, and Development of Efficient Grapevine Virus Testing Methods
… studies to provide a deeper understanding of the viruses and vectors for management of virus diseases and development of better tools for grapevine virus diagnostics. A statewide survey for 14 different grapevine viruses between 2009 and 2014 was conducted: 721 samples were collected from 116 …
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Αντισώματα κατά του κυτταρομεγαλοϊού, τοξοπλάσματος Gondii, έρπητα Ι και ΙΙ, ερυθράς και συνδρόμου επίκτητης ανοσολογικής ανεπάρκειας σε πρωτότοκες και πολύτοκες κατά την εγκυμοσύνη
… was the epidemiological investigation of four virus diseases (cytomegalovirus disease, herpes simplex type I and II infection, rubella and acquired immunodeficiency syndrome) and toxoplasmosis in pregnant women of North-Western Greece. Antibodies against the above infections agents (except …
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Molecular diversity and coat protein expression of Sweet potato leaf curl virus
Leaf curl virus diseases have been reported in sweetpotato throughout the world. One of the causal agents is Sweet potato leaf curl virus (SPLCV) which belongs to the genus Begomovirus (family Geminiviridae). In the United States, SPLCV has been found infecting an ornamental sweetpotato and several …
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CHARACTERIZATION OF HCMV-ENCODED CHEMOKINE RECEPTOR US28 TRANSDUCED MSU1.1 HUMAN FIBROBLAST CELLS
<p>Human Cytomegalovirus (HCMV) encodes the G-protein coupled receptor US28. Using a mouse model system, US28 was previously found to be oncomodulatory, increasing proliferation, inducing anchorage independent growth and loss of contact inhibition. Similarly, in the human glioblastoma cell line …
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Assessing the Distribution and Impact of <I>Bean pod mottle virus</I> (BPMV) as a Re-emerging Virus, and <I>Soybean mosaic virus </I>(SMV) in Soybean Grown in Virginia
<I>Bean pod mottle virus </I>(BPMV, Genus <I>Comovirus</I>, Family: <I>Comoviridae</I>)is an important virus in soybean (<I>Glycine max</I> (L.) Merrill), causing quality and yield loss due to seed coat mottling and seed weight reduction. Although BPMV has been known in Virginia since 1958 and has …
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The status of protective measles antibodies in HIV-1 positive and negative infants aged 6 and 9 months in urban Lusaka,Zambia
BACKGROUND – Measles remains the leading cause of vaccine preventable disease that contributes to under 5 mortality rate despite the availability of a safe and effective vaccine. During the 2010-2011 measles outbreak, infants aged 0-8 months constituted 39% of the total population of children …
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The status of protective measles antibodies in HIV-1 positive and negative infants aged 6 and 9 months in urban Lusaka,Zambia
BACKGROUND – Measles remains the leading cause of vaccine preventable disease that contributes to under 5 mortality rate despite the availability of a safe and effective vaccine. During the 2010-2011 measles outbreak, infants aged 0-8 months constituted 39% of the total population of children …
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A partial characterization of Acyrthosiphon pisum (Harris) strains efficient and inefficient in the transmission of pea enation mosaic virus
Thesis (M.S.)--Michigan State University. Dept. of Entomology, 1967
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Distribution of the virus of infectious bronchitis of chickens in embryonated chicken eggs
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science, 1947
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Prevelance of Avian Influenza Viruses in Northern Zambia
… described the prevalence of avian influenza viruses in wild waterfowl and domestic birds on the wetlands of Northern Zambia (Luapula and Northern Provinces). The purpose of the research was to establish if there are any influenza viruses circulating in this region in order to determine the …
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Prevalence of Avian Influenza viruses in Northern Zambia
… described the prevalence of avian influenza viruses in wild waterfowl and domestic birds on the wetlands of Northern Zambia (Luapula and Northern Provinces). The purpose of the research was to establish if there are any influenza viruses circulating in this region in order to determine the …
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