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 15 of 15 for “"Genotype-by-Environment Interaction"”.
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Genotype by environment interaction for feed efficiency in growing-finishing pigs in Brazil versus the Netherlands
… pigs across the diverse, and often challenging, environments in commercial farms. The main aim of this thesis was to investigate the existence and magnitude of genotype by environment interaction for feed efficiency im CB pigs kept under Brazilian commercial production circumstances and purebred …
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Genotype by environment interaction for Holstein milk yield and fitness traits between Saudi Arabia and the United States
… in the first four lactations were estimated by multiple-trait animal model using Method R procedures. The objectives of this study were to determine if genotype by environment interactions for milk yield and fitness traits exist between Saudi Arabia and the US and to investigate the …
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Genomic Prediction and Genetic Dissection of Yield-Related Traits in Soft Red Winter Wheat
… (SNP) data generated via a genotyping-by-sequencing (GBS) protocol to perform GWA on multiple yield-related traits using a panel of 329 soft red winter wheat genotypes grown in four environments. In addition, the SNP data was used to examine linkage disequilibrium and population …
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Application of genetic and statistical tools for improvement of Louisiana rice
… to sheath blight (SB), a disease caused by Rhizoctonia solani Kuhn, are important objectives for the rice (Oryza sativa L.) industry. Grain quality traits and SB resistance play an important role in the economic prosperity of commercial rice markets. The objectives of our research were …
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Applications of next-generation sequencing technologies and advanced analytical methods to understand gene by environment interactions
… for high voluntary activity to a control line in environments restricting or enabling a rewarding activity. Results offered insights into genetic factors behind activity dependence and provided a model for understanding addiction and other reward-dependent behaviors.Most genes differentially …
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Effects of barley yellow dwarf virus and environment on grain avenanthramide concentration in spring oat (Avena sativa L.)
… interact with pathogens, the regional genotype-by-environment interactions of AVN concentration, and the heritability of AVN concentration. This study explored the relationship between Barley Yellow Dwarf Virus (BYDV) and avenanthramide concentration, as well as the …
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Stress-induced remodeling of the caenorhabditis elegans dauer
… FLP branching. Here I find a previously unknown genotype by environment interaction within the UPR, demonstrating temperature-dependent regulation of neuronal, pharyngeal, and cuticular remodeling in the dauer. In Chapter 5, I show that several aspects of the dauer formation pathway are necessary …
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Grain hardness and slow dry matter disappearance rate in barley
… be carefully managed to avoid maladies caused by the rapid breakdown of barley starch in the rumen. The development of slower degrading barley for ruminants may alleviate health problems associated with barley grain consumption. Selection for hard endosperm may result in slower starch …
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Statistical genetics tools for empowered data-driven decisions
… analyses, including individual trials, multi- environment trials, spatial analysis, and competition analysis. Finally, Chapter 6 introduces the R package ProbBreed, which utilizes Bayesian principles and probabilistic concepts to support selection in multi-environment trials. ProbBreed …
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Genomic Selection, Quantitative Trait Loci and Genome-Wide Association Mapping for Spring Bread Wheat (Triticum aestivum L.) Improvement
… has been successful to improve traits controlled by moderate to large effect QTL; however, it has limited application for traits controlled by many QTL with small effects. Genomic selection (GS) is suggested to overcome the limitation of MAS and improve genetic gain of quantitative traits. GS is a …
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GENETIC ANALYSIS OF SELECTED SEED CONSTITUENT TRAITS IN CHICKPEA (Cicer arietinum L.)
… chickpea germplasm collections grown in multiple environments. The study utilized three distinct germplasm collections: (i) a reference (237 genotypes); (ii) composite (168 genotypes) and (iii) a recombinant inbred lines (RIL, 224 genotypes) grown in multiple environments. All the three chickpea …
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Genetic control and prediction of milling and baking quality for UK wheat breeding
… bread making and these are both genetically and environmentally controlled. In the UK, breeders have historically focussed more on increasing yield rather than quality due to the difficulty in selecting for multiple low throughput and high cost quality traits. This thesis aims to redress this …
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Genetic marker analysis of three major carbohydrates in soybean seeds
… manipulate genetically due to the influence of genotype, environment, and genotype by environment interactions on seed chemical composition. The objectives of the second study were to evaluate agronomic and quality traits over locations and to study correlations among traits. The agronomic …
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NESTED ASSOCIATION MAPPING TO IDENTIFY SEED COMPOSITION QTL IN DIVERSE SOYBEAN LINES
… products. The value of soybean could be enhanced by increasing protein, oil, and sucrose contents, while lowering anti-nutritional compounds such as oligosaccharides. Understanding the genetic and environmental factors controlling soybean seed composition is an essential prerequisite for such an …
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Computational corn hybrid selection integrating phenotypic, environmental, and genomic information
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms