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 52 for “"QTL analysis"”.
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Quantitative Trait Loci (Qtl) Analysis Of Sulfur Sensitivity In Vitis Aestivalis-Derived 'Norton'
… respectively. A major quantitative trait loci (QTL) for sulfur sensitivity was detected on linkage group 14 (LOD=15). Identification of this QTL will allow future grape breeding programs produce commercially suitable hybrids, which do not display sulfur sensitivity, via marker assisted selection …
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Leveraging genomic mapping and QTL analysis to enhance drought tolerance of cultivated peanut (Arachis hypogaea L.)
… tolerance related quantitative trait loci (QTL) and genetic markers to facilitate the development of drought tolerant cultivars. Three diverse recombinant inbred line (RIL) populations, derived from crossing lines N05006 x N04074FCT (Pop-1), line N05006 x Phillips, an old virginia-type …
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Development of a Genetic Linkage Map of Broccoli and Identification of QTL Associated With Glucosinolate Variability
… differences in health promoting compounds. QTL analysis in this experiment identified seven QTL on six linkage groups associated with the variability of individual and/or total glucosinolate content at or above an LOD score of 3.0.
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Identifying and dissecting novel QTL regulating seed fatty acid composition in Arabidopsis thaliana for the improvement of rapeseed oil
… controlled by multiple loci. Therefore QTL analysis was performed using six recombinant inbred populations derived from wild accessions rich in natural variations. QTL analysis identified loci involved in PUFA composition and oil content and 13 QTL were selected for the development of …
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Investigation of Putative Genetic Factors Associated with Soybean [Glycine Max (L.) Merr.] Seed Quality Traits
… higher seed stachyose content were utilized in a QTL analysis approach that incorporated the use of the Williams82 whole genome shotgun (WGS) sequence (http://www.phytozome.org) in a candidate gene mapping approach. A predicted soybean galactosyltransferase gene was established as a candidate gene …
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Evaluation of physiological traits and identification of QTLs for drought tolerance in hexaploid wheat (Triticum aestivum L.).
… (DH) population; and a quantitative trait loci (QTL) analysis to identify QTLs associated with drought tolerance traits in the field. In the first part (Chapter 3), three cultivars of wheat (Triticum aestivum L.) adapted to South Australian conditions were tested for drought tolerance under …
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The genetics of species differences within the genus Nasonia ASHMEAD 1904 (Hymenoptera: Pteromalidae)
… to study the genetic of species differences in QTL (quantitative trait locus) analyses as well as the genetics of postzygotic isolation causing hybrid inviability. The aim of the study was to investigate the genetic architecture of differences in courtship behaviour and wing size between N. …
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Quantitative Trait Loci Analysis of Low Temperature Responses in Grapevine F2 Population
… and bud break using quantitative trait loci analysis (QTL). An F2 population developed by selfing a single F1 from a cross between American species <em>Vitis riparia</em> and a hybrid grapevine Seyval, was used to conduct QTL analysis for subzero temperature tolerance. The low temperature …
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Natural Variation in Arabidopsis thaliana Growth in Response to Ambient Temperatures
… variants underlying Quantitative Trait Loci (QTL) responsible for the natural genetic variation of hypocotyl length in response to ambient temperatures. The Arabidopsis thaliana accessions were phenotyped for hypocotyl length at 12°C, 17°C, 22°C and 27°C ambient temperature environments and …
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Approach to the identification of sex-determining genes in the tilapia genome by genetic mapping and comparative positional cloning
… between sex chromosomes.</p><p>To facilitate QTL analysis of these traits, a genetic linkage map was constructed from hybrids between Oreochromis aureus and O. niloticus using CRIMAP. The linkage map consists of 25 linkage groups with about 500 genetic markers spanning 2345 cM. Using the …
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Avoiding trade-off when enhancing Fusarium head blight resistance of barley
… assays to enable quantitative trait loci (QTL) mapping of both FHB and agronomic traits. Within the C×T population, a QTL for FHB resistance was identified on chromosome 6H which was not associated with either height or heading date, suggesting that resistance in this region is not due to …
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A Genetic Approach towards Modulating Pre-Harvest Pod Shatter in Brassica napus (Oilseed Rape)
… The linkage map was used as a basis to perform a QTL analysis where a number of loci associated with increases in PSR in B. napus have been identified. Genetic markers linked to these loci could provide a valuable tool for marker assisted selection (MAS) to improve pre-harvest pod shatter in B. …
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Genetic dissection of sorghum height and maturity variation using sorghum converted lines and their exotic progenitors
… introgressed with early maturity and dwarfing QTL from a common, temperate-adapted donor using a minimum of four backcrosses. In this study partially-isogenic populations were generated by crossing six diverse SC lines to their corresponding exotic progenitor (EP) lines to assess the phenotypic …
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Dissecting the genetic, physiological and metabolic mechanisms of grapevine resilience to heat stress
… information from 139 individuals, to perform QTL analysis. Based on physiological responses to high temperatures, selected individuals showing contrasting behaviour, together with parental lines, were further studied in controlled conditions. In the field, in fact, plants may be subjected to …
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Fine mapping studies of quantitative trait loci for baseline platelet count in mice and humans
… mapping of the murine regions was undertaken by QTL analysis in a murine F11 advanced intercross line. This approach successfully narrowed the support interval for pltct2. Although linkage at the pltct1 locus was also replicated, this failed to reach genome-wide significance in the F11 study. …
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Multiscale Genomic Analysis of the Corticolimbic System: Uncovering the Molecular and Anatomic Substrates of Anxiety-Related Behavior
… this dissertation is a multi-scalar, integrative analysis of the molecular and neuroanatomic substrates that underlie emotion-related behavior. The amygdala is a principle component of the limbic system that controls emotionality. Using BXD recombinant inbred (RI) mice as model organisms, the …
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Quantitative Trait Loci Associated with Waterlogging Tolerance in a Soft Red Winter Wheat Mapping Population
… and to identify quantitative trait loci (QTL) associated with tolerance and productivity. Experiments were carried out in both the greenhouse and the field using a RIL population derived from the wheat cultivars `USG3209' and 'Jaypee'. The effect of vegetative stage waterlogging was …
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Exploring candidate genes and rhizosphere microbiome in relation to iron cycling in Andean potatoes
… multiple approaches including SNP genotyping, QTL analysis, identifying genes orthologous to Arabidopsis ferrome, yeast complementation assay and genetic transformation to avoid the limitation from a single approach. We revealed several candidate genes potentially associated with potato plant …
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Quantitative trait locus mapping of yield and yield components in canola (Brassica napus L.) under irrigated and rainfed treatments
… conditions by quantitative trait locus (QTL) analysis; and 4) to study the sensitivity of yield and yield component traits to drought stress by performing analysis of variance and by performing a QTL analysis on the difference in trait values from the rainfed and irrigated treatments. Two …
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