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 28 for “"Disease Resistant"”.
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Gender Impacts of Molecular-Assisted Breeding: The Case of Insect and Disease Resistant Cassava in Nigeria
Cassava is the main staple crop in Nigeria. Using primary data from four south eastern states in Nigeria, the study assessed the gender impacts of improved cassava varieties. Comparative statistical analysis reveals that total female labor is higher than total male in cassava production, processing …
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Interactions between basic and applied research:the example of research leading to multiple disease resistant potato cultivar development
… example, namely, the development of multiple disease resistant potato cultivars, and to examine the changing roles and interactions between public research institutions and private industry. Given the existing budgetary constraints and the increasing demands for accountability that research …
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Identification and analysis of mechanisms involved in a broad-spectrum disease resistant mutant of the winter wheat cv. Guardian
… 17% compared to ‘Guardian’ in the absence of disease. At the seedling stage, M66 exhibited partial resistance. M66, along with Tht mutants (Tht 12, Tht13), also exhibit increased tolerance to environmental stresses (abiotic), such as drought and heat stress at seedling and adult growth stages, …
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A betegség-ellenálló almafajták és fajtajelöltek virágzás-fenológiai és termékenyülés-biológiai sajátosságai = Floral biology and fructification features of disease resistant apple varieties and candidates
Az alma a világ negyedik legnagyobb mennyiségben termelt gyümölcse, a mérsékelt égövben pedig a legjelentősebb gyümölcsfaj. 2007-ben a világ almatermése mintegy 66 millió tonna volt, a FAO (2009) adatai alapján. Magyarországon is – mennyiségét tekintve – a legjelentősebb gyümölcsfaj, volt olyan év, …
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Modeling the Dispersion of Eastern Oyster Larvae (<i>Crassostrea virginica</i>) and its Effects on the Movement of Disease Resistant Genes in the Delaware Bay Estuary
… role of larval dispersion in the transference of disease-resistant genes? The particle-tracking module in the Regional Ocean Modeling System (ROMS) was converted into an Individual-Based model representing Eastern oyster larvae that has growth and vertical migration. Exchange of larvae between …
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The Relationship Between Resistance to the Fungal Toxin Cercosporin and Grey Leaf Spot Disease Resistance in Corn (ZEA MAYS L.)
… fungus "Cerospora zeae-maydis" which causes the disease Grey Leaf Spot. The fungus produces a toxin, cercosporin, whose role in the pathogenicity of the disease is not known. The first step in determining the importance of the toxin to the fungus is to screen corn inbreds to see if any disease …
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Evaluating the Adaptive Genomic Landscape of Remnant and Backcross American Chestnut Populations to Inform Germplasm Conservation
… resulting in the loss of billions of trees. Disease-resistant American chestnut populations have been developed, but the introgression of wild adaptive diversity into these breeding populations will be necessary to develop locally adapted and disease resistant chestnut trees for …
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Effect of exogenous hormones on pregnancy maintenance in the prepuberal rat
Seventy five mature and 520 prepuberal Dublin Disease Resistant rats were utilized to study the effects of exogenous hormones upon various reproductive phenomena. Ovulation was induced in 45 day old females by means of PMS and HCG. Progesterone (1.5, 2.5, 3.5, 5.0, or 10.0 mg) was dissolved in …
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Accelerated, graft-based germplasm conservation of American chestnut (Castanea dentata) in the South
… allows release from shade conditions and disease pressure to promote flowering. Collection of pollen from containerized grafted trees allows conservation of genetic resources that were previously unavailable to breeders or difficult to access. Additionally, the use of high light …
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Mosquito Transposable Elements and piwi Genes
… for controlling transmission of vector-borne diseases. However, increasing resistance to insecticide and drugs suggests that new strategies to control vector-borne diseases are needed. One possible strategy involves replacing mosquito populations with disease-resistant transgenic mosquitoes. …
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Mass appeal : saving the World's bananas from a devastating fungus
… banana due to Fusarium wilt (also called Panama disease). The disease was caused by the fungus Fusarium oxysporum, and there was no cure. The only solution was to replace Gros Michel with the disease-resistant Cavendish. Now, the fungus is back. A strain called Tropical Race 4 (TR4) has decimated …
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Intercropping with resistant cultivars reduces early blight and root knot disease on susceptible cultivars of tomato (Lycopersicon esculentum)
… objective of this research was to determine if disease on susceptible tomato cultivars is reduced by intercropping with resistant cultivars. A second objective was to investigate the mechanism of the disease reduction observed. Early blight (caused by Alternaria solani) rate of disease increase …
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Investigating the regulation of plant immunity by the N-degron pathway
Crop losses arising from plant diseases present a major obstacle for efforts to meet the food demands of a growing global population, and these impacts may be exacerbated by unprecedented rates of climate change. The Ubiquitin Proteasome System (UPS) contributes to the regulation of plant immunity …
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Evaluation of resistance to Sclerotinia crown and stem rot caused by Sclerotinia trifoliorum in selected alfalfa cultivars
… period of 96 hr produced significantly higher disease severity than 72, 48 or 24 hr, however, cv differentiation was best after 72 hr. Eight-, and nine-week-old plants were found to be most suitable for cv evaluation tests since younger seedlings were severely damaged and more mature plants did …
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Flour quality and dough stickiness of soft red winter wheat lines with and without 1B/1R translocations
… meet the high demands for wheat flour. To reduce disease and increase wheat yield, cultivars have been developed by replacing the short arm of chromosome 1B of wheat with the short arm of the 1R chromosome from rye (Secale cereale L.). This wheat-rye translocation, 1B/1R, carries linked genes …
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Incidence, Distribution and Characteristics of Major Tomato Leaf Curl and Mosaic Virus Diseases in Uganda
… agronomic practices, lack of high yielding and disease resistant varieties, and pests (Varela, 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 …
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A Conjoint Analysis of Consumer Preferences for Product Attributes: The Case of Illinois Apples
… has resulted in the development of new disease-resistant apples varieties. The objectives of the study are to learn about consumer preferences for such apple attributes as place of production (locally grown versus non-locally grown), method of production (genetically modified versus …
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The oat-crown rust pathosystem: an interaction of a plant, a pathogen, and time
Plant diseases are often described as the interaction of a plant, a pathogen, and the environment. For a disease to develop, there must be a susceptible plant, a virulent pathogen, and an environment amenable to disease. This concept is useful to explain the presence or absence of a disease, but …
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Early Successional Processes of Experimentally-Reclaimed Mine Sites in Eastern Ohio and the Restoration of American Chestnut
… sites ideal for restoration plantings of disease-resistant chestnut hybrids. The work here has been conducted on an experimentally-reclaimed mine site in Belmont County Ohio, and attempts to shed light on two broad questions: 1) What can be expected during restoration plantings of American …
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Genomic changes underlying disease resistance and high protein QTL
Underlying genomic changes to disease resistance QTL cqSCN-006 and cqSCN-007 Soybean Cyst Nematode (SCN) is the most devastating pest of Glycine max (soybean). Currently control of SCN is through planting of non-host crops and the use of disease-resistant soybean germplasm containing resistance …
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