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 42 for “"trait associations"”.
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Biological and Ecological Trait Associations and Analysis of Spatial and Intraspecific Variation in Fish Traits
Traits provide an informative approach to examine species-environment interactions. Often, species-by-species approaches are inefficient to generate generalizable ecological relationships and do not predict species responses to environmental changes based on specific traits species possess. …
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Genotypes to Phenotypes: Genomic attributes that impact Genome-wide Associations in peanut (Arachis hypogaea. L).
… peanut. We evaluated the ability to infer marker-trait associations using a subset of the USDA peanut core collection (the “mini-core”). This work paved the way and led to the genotyping of the entire USDA peanut core collection and the subsequent release of this data to the community. The ability …
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Incorporating molecular markers into applied maize breeding
… polymorphisms (RFLPs) were used as markers, and associations were established between these markers and different quantitative traits. Comparisons were made between marker-trait associations in diallel, testcross, and line per se data sets, and also between marker assisted selection (MAS) and …
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Development of new tools and germplasms for improvement of wheat resistance to Fusarium head blight
… resistance, recurrent parent similar agronomic traits were selected. They can be used as FHB resistant bridge parents for hard winter wheat breeding. To identify native FHB resistant sources, a population of 201 U.S. breeding lines and cultivars were genotyped using 90K wheat SNP arrays and …
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Use of RFLP markers in maize as an aid in selection during inbreeding
… used as markers to detect favorable quantitative trait alleles in the maize (Zea mays L.) population BS11(FR)C7 which were not in the hybrid 'FRB73 x FRMo17'. Thirty-four RFLP loci representing 16 chromosome arms were used to determine marker genotypes for 220 (BS11(FR)C7 x FRMo17) F2 individuals. …
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GENETIC ANALYSIS OF SELECTED SEED CONSTITUENT TRAITS IN CHICKPEA (Cicer arietinum L.)
… variation for selected chickpea seed composition traits; and 2) to identify the chickpea genomic regions associated with variations in seed constituent traits. The study is based on the hypothesis that natural variation exists for chickpea seed composition and it is associated with specific …
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High Precision Binary Trait Association on PhylogeneticTrees
… often lack the statistical power to detect associations while controlling false discoveries, and face computational limits at scale. Here, we present SimPhyNI (Simulation-based Phylogenetic iNteraction Inference), a computational framework for detecting binary trait-trait associations in …
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Molecular markers associated with barley yellow dwarf virus tolerance in spring oat and their utilization in predictive breeding
… in oat has not allowed for many marker-trait association studies to determine the genetic mechanisms for tolerance and as a result, marker-assisted selection (MAS) and genomic selection (GS) have not been extensively used in breeding for BYD tolerance. In the first study, a genome-wide …
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Identification of QTL and candidate genes for plant density tolerance in maize
… for the objective of identifying quantitative trait loci (QTL) and candidate genes for plant density tolerance. Yield trials were grown at a high plant density of 116,140 plants ha-1 (47,000 plants per acre [ppA]), and planted in five environments over 2012 and 2013. Grain yield and a total of …
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Genetic control of flowering time and biomass yield in sorghum
… time, biomass yield, and yield component traits. We also examined correlations between traits, correlations between inbred and hybrid performance, and the relationship between traits of interest and genetic diversity. Significant marker-trait associations were detected for maturity, plant …
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EVIDENCE EVALUATION IN BIOMEDICAL KNOWLEDGE GRAPHS FOR PHARMACEUTICAL DISCOVERY
… to aggregate experimental genome wide variant to trait associations as novel drug target hypotheses. Peer-reviewed papers, with the author as first author, have been published, for Badapple in 2016, TIGA in 2021 and KGAP in 2022. Relevant portions of other projects are also described, each …
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Evaluation of genomic prediction models that incorporates peak GWAS signals in maize and sorghum diversity panels
Some of the most important agronomic crop traits of interest are complex and thus governed by many genes of small effect. The statistical models typically used in a genome-wide association study (GWAS) and genomic selection (GS) quantify the contributions of genomic markers in linkage …
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Genome-wide association study of Barley Yellow Dwarf Virus resistance in a Nested Association Mapping population of winter wheat using Skim Exome Capture and Practical Haplotype Graph imputation
… Mixed Model (MLMM). Significant quantitative trait loci (QTL) were detected on chromosomes 5B, 6A, 7B, and 7D, with BLINK identifying stronger associations for BYDV severity and MLMM capturing additional loci for flowering date. A subset of significant markers was tested for validation through …
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A Genome Wide Association Study for Fusarium Head Blight Resistance in Southern Soft Red Winter Wheat
… of known FHB resistance genes and quantitative trait loci (QTL), and 3) identify novel resistance loci using a genome wide association (GWA) approach. From 2014-2017, 360 SRWW breeding lines were evaluated in inoculated misted FHB nurseries in Fayetteville and Newport, AR and Winnsboro, LA (2017 …
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Understanding the Genetic Basis of Sex Differences in Human Height
… of genetic variation in the human population, trait differences between males and females can have important implications in treatment response and disease diagnosis. Genes along the X and Y chromosomes encode broadly-expressed regulators of the transcriptome and epigenome that have diverged in …
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A genome-wide association study of resistance to the yellow rust pathogen (Puccinia striiformis f. sp. tritici) in elite UK wheat germplasm
… UK wheat germplasm Identification of marker-trait associations (MTA) in germplasm relevant to breeding program via association mapping (AM) can be an effective way to identify loci useful for selection. This approach does not require the generation of specific mapping populations and takes …
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Bayesian Network Modeling and Inference of GWAS Catalog
… modeling single-nucleotide polymorphism (SNP)-trait associations due to its advantage in addressing the high computational complex and high dimensional problems. Most current works learn the interactions among genotypes and phenotypes from the raw genotype data. However, due to the privacy …
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Genome-wide association study for non-normally distributed traits: A case study for stalk lodging in maize
… tools to study the genetic basis of agricultural traits, notably with the application of the Genome-Wide Association Study (GWAS). A limitation of GWAS is that the assumptions underlying the linear model typically used to conduct the analysis are often violated in nature, and in such cases, the …
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Genomic Prediction and Genetic Dissection of Yield-Related Traits in Soft Red Winter Wheat
… prevalent method of identifying the quantitative trait loci (QTLs) that underlie complex traits. Despite this, relatively few GWA analyses using high-density genomic markers have been carried out on highly quantitative traits in wheat. We utilized single-nucleotide polymorphism (SNP) data …
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