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 16 of 16 for “"linkage maps"”.
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Construction of comparative and framework linkage maps for the identification of quantitative trait loci in cattle
… analysis. Comparison of the bovine genetic maps to humans and the mouse reveals both similarities and differences between the species.
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Effect of Harvest Time on the Incidence of Red Drupelet Reversion and Development of Tetraploid Linkage Maps in Blackberry
… high heterozygosity and lack saturated molecular maps reliable for gene discovery. An F1 population and the parents were genotyped with new strategies optimized for autopolyploids to yield two saturated genetic linkage maps of the parents with 3,942 markers in total across 65 linkage groups. The …
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Molecular Genetics on the Genus Glycine: I. Phylogenetic Study of the Subtribe Glycininae. II. Development of a Universal Soybean Genetic Map
During the last decade various soybean genetic linkage maps have been developed based not only on morphological and biochemical traits but also on molecular traits such as RFLP, RAPD, AFLP, and SSR data. None of these, however, has been associated with specific chromosomes of soybean. Therefore, …
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MULTIPLE APPROACHES TO MAPPING RESISTANCE TO MELAMPSORA LEAF RUST IN SHRUB WILLOW (SALIX)
… 2) describe the relatedness within, produce linkage maps, and map the sex determination regions within the Salix F1 hybrid mapping population and within those same linkage maps 3) identify QTL for leaf rust severity in addition to a multitude of agronomically important traits. Analysis of 3′ …
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Simultaneous Mapping and Pyramiding of Fusarium Head Blight Resistance Loci in Wheat Breeding Populations
<p>QTL linkage analysis for plants has relied on large single-cross mapping populations derived from phenotypically divergent parent lines. This approach creates a disjunction between QTL mapping and marker-assisted breeding efforts aimed at pyramiding QTL, since no direct bridge exists between the …
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Simple Sequence Repeat Development, Polymorphism and Genetic Mapping in Quinoa (Chenopodium quinoa Willd.)
… Andean region of South America. DNA markers and linkage maps are important tools for the improvement of underdeveloped crops such as quinoa. The objectives of this study were to (i) develop a new set of SSR markers to augment the number of SSR markers available in quinoa, and (ii) construct a new …
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Genomic characterization of multi-parental populations of sorghum and rice
… Chapter 1 describes the generation of genetic linkage maps for eight sorghum recombinant inbred line (RIL) populations using genotyping-by-sequencing (GBS) data. In this work, 1626 RILs from eight biparental populations were genotyped using a modified GBS protocol with Y-adapters. For SNP …
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Genomic dissection of structural variations and evolution forces of the sex chromosomes in spinach (spinacia oleracea)
… a small 1.78 Mb region is featured by strong linkage with sex type and it is conserved across 40 different spinach accessions by genotyping plants with 12 DNA markers. However, a large-scale test by genome-wide polymorphic markers is needed to map the position of the region and estimate the …
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Chromosomal evolution in mosquitoes - vectors of diseases
… positioning of markers on physical and genetic linkage maps. This will improve gene annotation and help in distinguishing potential haplotype scaffolds and regions of segmental duplications. It will also facilitate identification of epidemiologically important genes that can be used as targets …
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Genetic and Molecular Analysis of the Rj(7) Gene in Soybean Using Pcr-Based Technologies
… to this mutant allele, mostly in coupling phase linkage. These markers were also found to be highly he ritable in backcrosses and descendent generations. Genetic linkage maps of the chromosomal region around the rj7 locus were constructed using the MAPMAKER program. It is concluded that PCR-based …
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Genetic Analysis of Variation for Carotenoids and Tocopherols in Maize
… evaluated on the F2:4 and BC1S1 populations, and linkage maps were created. Each population was analyzed for four carotenoids, beta-carotene, beta-cryptoxanthin, lutein, and zeaxanthin and three tocopherols, alpha-tocopherol, delta-tocopherol, and gamma-tocopherol. Composite Interval Mapping was …
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Genetic analysis of reproductive and nut traits in almond [Prunus dulcis (Mill.) D.A. Webb]
… This thesis also reports on the construction of linkage maps for Nonpareil and Lauranne based on genotyping-by-sequencing (GBS) and on the design of uniplex assays for detection of SNPs detected by GBS. These assays were applied to additional Nonpareil × Lauranne progeny and to progeny from three …
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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
… markers were added to the pre-existing genetic linkage maps near the three QTL associated with APR in the Becker by Massey (BM) population. Interval mapping analysis of mildew severity data collected in 2002 (F<sub>5:6</sub>) and 2003 (F<sub>6:7</sub>) field experiments with marker genotype data …
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Behavioral and genomic patterns of evolution during speciation via reproductive and agonistic character displacement
… annotated darter draft genome. I also generated linkage maps for orangethroat and rainbow darters. Using these tools, I identified several putative chromosomal translocations that may be implicated in genetic incompatibilities. Analyses of restriction-site associated DNA sequencing (RADseq) data …
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Investigation of winter wheat sowing date management and genetic architecture of malting quality in winter barley and milling/baking performance in soft red winter wheat
Wheat (Triticum aestivum, L) and barley (Hordeum vulgare) are widely grown as winter annual grains in a double crop rotation with soybean (Glycine max, L. Merr.) in much of the U.S. Improved management strategies and the development cultivars that meet the quality requirements of higher value …
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Linking ecological divergence and reproductive isolation: a tale of two killifish
… or not chromosomal rearrangements have led to linkage disequilibrium between genes underlying reproductive isolation and genes underlying salinity tolerance. Many closely related species differ in chromosome number and shape. Chromosomal rearrangements can be important to both adaptation and …