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 “"Plant Breeding and Genetics"”.
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Analysis of cold acclimation ability and drought tolerance of Petunia spp
… (M.S.)--Michigan State University. Department of Plant Breeding and Genetics - Horticulture, 2009
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Ärftlighetsforskningens gränser : Individer och institutioner i framväxten av svensk genetik
In the first part of the 20th century genetics developed into an important research field. The aim of this study is to follow and analyse the transformation of genetics from its origin within an agricultural context to an academic discipline in Sweden (ca. 1900-1960). Mendelism was introduced as a …
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Regulation of GmHD-ZIPIII During Soybean Root Lateral Organ Development
… use of chemical fertilizers providing economic and environmental benefits. Though not completely understood, the molecular signaling events during nodule development are being identified. Class III homeodomain leucine zipper (HDZIPIII) proteins are a group of plant specific transcriptional …
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Graduate students' motivation to teach plant sciences to K-12 audiences
… students' motivation to share their knowledge and research with K-12 audiences as future scientists is informed by their beliefs and perceived value of science literacy outreach. Graduate training programs in academia integrate outreach teaching components to equip future scientists with a …
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Genetic structure of Pseudoroegneria spicata in the Northern Palouse Prairie and Channeled Scablands
… However, the genetic structure of native plant species used for restoration is often poorly understood. Pseudoroegneria spicata, is a keystone species of the Inland Northwestern US that has become a staple in commercially available restoration seed mixes. It is abundant in remnant prairies …
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Evaluation and Identification of Soybean Aphid Resistance Sources and Mapping of Soybean Aphid Resistance Loci in Early Maturing Soybean Germplasm Accessions
… particularly in the northern United States and three Canadian provinces. At least four biotypes of soybean aphid have been confirmed in the United States. Identification of soybean aphid resistance sources in early-maturing soybeans and genetic characterization of new sources of resistance …
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Physiological Responses of Cotton Genotypes to Water-Deficit Stress during Reproductive Development
… the major abiotic factors affecting crop growth and limiting production worldwide. Cotton genotypes vary in drought tolerance, and the effects of drought stress on the anatomy and physiology of cotton leaves and roots have been reported. However, information on physiological and metabolic …
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Genetic Diversity in Native and Invasive <i>Rubus </i>(Rosaceae)
… species’ extinctions. Invasives spread quickly and efficiently, and the U.S spends millions of dollars annually in the control and eradication of these species. More information is necessary in order to predict which species may become invasive. Rubus (Rosaceae) was chosen for study because this …
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Morphological and Molecular Taxonomic Identification and Phylogenetics of Criconematoidea
… (subfam. Criconematinae, Hemicycliophorinae) and Tylenchulidae (subfam. Tylenchulinae, Paratylenchinae and Tylenchocriconematinae). Multiple species in genera have been identified and differences and similarities have been found. Species belonging to genera Mesocriconema and Criconemoides show …
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Assessment of a Muscadine Grape (Vitis rotundifolia) Mapping Population for Tolerance to Pierce’s Disease Pathogen Xylella fastidiosa and Resistance to Black Rot Disease Pathogen Guignardia bidwellii
<p>Pierce’s disease (PD) and black rot disease cause severe economic losses for grape production under humid and warm conditions. Identifying resistance genes is crucial for controlling these disease by developing resistant cultivars. Muscadine grape (<em>Vitis rotundifolia</em>) cultivar ‘Pam’ has …
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Interplay of DGAT1, PDAT1 and DGAT2 Enzymes in Plant Triacylglycerol Assembly
… (DAG) forming triacylglycerol (TAG, a.k.a oils and fats). Most plants have at least two unrelated <em>DGAT</em> genes, <em>DGAT1</em> and <em>DGAT2.</em> Plants predominantly express only one during oil synthesis; the reason, however is not clear. A few studies have indicated that each enzyme …
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Molecular Systematics of <i>Isoëtes</i> (Isoëtaceae) in Eastern North America
… in a clade of species mostly occurring in North and South America. Eastern North America accounts for 22% of global taxonomic diversity, containing 32 fertile taxa and 16 named hybrids. This taxonomic diversity is built upon relatively little morphological difference, and even combined with …
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Applying Molecular and Phenotypic Tools to Characterize Flesh Texture and Acidity Traits in the Arkansas Peach Breeding Program and Understanding the Crispy Texture in the Arkansas Blackberry Breeding Program
… (PBA) approach was performed in the peach breeding program for the first time. The pedigree consisted of seven-F1 populations, their parents, ancestors, and cultivars. Flesh firmness and titratable acidity (TA) were examined in 2011, 2012, and 2013. For TA, a consistent and strong QTL was …
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Determining the Fate of Hybridized Genomes in the Allopolyploid Brassica napus
… as a widespread mechanism in the evolution and speciation of the majority of flowering plants. Allopolyploid forms through interspecific hybridization and whole genome duplication. While allopolyploids may display increased vigor relative to their progenitors, they can also face challenges …
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The Identification of Quantitative Trait Loci for Sucrose and Stachyose Content in Soybean Seed
… sugar in soybean seed that affects the quality and taste of soyfoods, while stachyose is a non-digestible sugar that induces flatulence in non-ruminant animals. Therefore, soybean cultivars with high sucrose and/or low stachyose would be valuable for soyfood and meal markets. The objectives of …
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The Phenotypic Impact of Transgenic Flower Color Variation in Ipomoea quamoclit.
… engineering may be able to help address plant evolution questions by directly manipulating floral traits at the genetic level, in order to isolate individual traits and examine fitness associated with traits. Pleiotropy is a potentially confounding effect of this approach and must be …
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