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 14 of 14 for “"Durable resistance"”.
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Mapping and Characterization of Phytophthora sojae and Soybean Mosaic Virus Resistance in Soybean
… either through deployment of race-specific resistance or through quantitative resistance termed partial resistance. In the current study, partial resistance to <i>P. sojae</i> was mapped in an interspecific recombinant inbred line (RIL) population of <i>Glycine max</i> by <i>Glycine …
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Effects of the Lr34 and Lr46 rust-resistance genes on other diseases of wheat
Lr34 and Lr46 are adult plant resistance genes providing durable resistance to biotrophic diseases of wheat like rusts and powdery mildew. In seedlings, these genes increased susceptibility to Septoria tritici blotch (STB), caused by Zymoseptoria tritici, in near-isogenic lines (NILs) of spring …
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STRUCTURE-FUNCTION STUDIES OF TRANSLOCATED EFFECTORS FROM THE LATE BLIGHT PATHOGEN
… important food crop worldwide. Effective and durable resistance against late blight is desperately needed; and will depend on an improved understanding of the mechanistic basis of disease. Determining the adaptive functions of effectors might reveal previously unexploited management …
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Molecular Analysis of Oomycete Pathogens to Identify and Translate Novel Resistance Mechanisms to Crops
… of a system to identify potential new and durable resistance (R) genes against P. sojae in soybean germplasm. We developed a system to screen soybean germplasm for genes that recognize core Phytophthora sojae RXLR effectors that are conserved within the pathogen species and essential for …
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Exploiting rice diversity to uncover durable and broad-spectrum resistance
… study aims to identify novel, broad-spectrum and durable sources of resistance to BB and BLS, and to pinpoint potential candidate genes for further characterization. We screened an indica rice Multi-parent Advanced Generation Inter-Cross (MAGIC) population, a novel mapping resource that allows …
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QTL discovery for Japanese beetle resistance in aphid-resistant germplasm, stacking aphid-resistant genes, and metabolite profiling studies in soybean
… soybean aphid (<Aphis glycines> Matsumura) resistance genes into soybean [<Glycine max >(L.) Merr.] cultivars, it is important to retain resistance to insect defoliators. In order to improve MSU aphid-resistant germplasm for resistance to Japanese beetle (<Popillia japonica> Newman), a …
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Interactions of soybean Rsv genes and Soybean mosaic virus
… to the common strains of SMV. However, new resistance-breaking (RB) isolates of SMV have emerged in natural infections to break the resistance of Hutcheson containing the Rsv1y allele. These RB isolates are SMV-G5 and G6-like based on the differential reactions on soybean cultivars with the …
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Barley pathogens in Iceland: Identification, virulence and genetic structure of major barley pathogens in Iceland
… It is therefore recommended to use quantitative resistance along with major gene resistance in cultivar mixtures and multilines in breeding projects for durable resistance to R. secalis and P. teres in Iceland.
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Engineering durable late blight resistance to protect solanaceous plants
… <i>P. infestans</i> has rapidly overcome genetic resistances introduced into cultivated potato from wild species. This provides the rationale for developing artificial resistance genes to create durable resistance to late blight disease.<i>Phytophthora</i> species secrete essential effectors into …
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Genetic Resistance to the Downy Mildew Pathogen and Breeding towards Durable Disease Management in Spinach
… genetic components for establishing the basis of durable disease resistance development against the downy mildew pathogen (P. effusa 13) in spinach, through the use of various genome engineering approaches.</p> <p>Our results have led (Chapter 2) to the identification of potential stage specific …
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Validation, Saturation, and Marker-Assisted Selection of Quantitative Trait Loci Conferring Adult Plant Resistance to Powdery Mildew in an Elite Wheat Breeding Population
… recent efforts have shifted to breeding for more durable resistance, such as "adult plant resistance" (APR). Molecular markers and quantitative trait loci (QTL) associated with APR to powdery mildew must first be validated and QTL effects evaluated in different genetic backgrounds and breeding …
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Maize R gene Rxo1 Confers Disease Resistance on Pepper and Nicotiana benthamiana
… diseases on pepper. Due to limited genetic resistance resources in host species, a promising strategy for controlling BS disease is to transfer nonhost disease resistance (R) genes from other plant species into pepper plants to confer broad-spectrum and durable resistance. A maize R gene …
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Modelling spatial strategies for the durable deployment of crop disease resistance
Maximising the durability of crop disease resistance genes in the face of pathogen evolution is a major challenge in modern agricultural epidemiology. Spatial diversification in the deployment of resistance genes, where susceptible and resistant fields are more closely intermixed, is predicted to …
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Identificazione di un QTL principale per resistenza a ruggine bruna sul cromosoma 7B di frumento duro
… studies aimed at characterizing leaf rust resistance genes in durum wheat have been only recently undertaken. The Italian durum wheat cv. Creso shows a high level of resistance to P. triticina that has been considered durable and that appears to be due to a combination of a single dominant …