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 31 for “"plant morphology"”.
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Plant morphology and gas exchange in Hesperaloe: Influence on its adaptation for cultivation.
… for this dissertation was that the contrasting plant architecture, and the distinct native environments of Hesperaloe funifera and H. nocturna should be reflected in differences in their eco-physiological responses, and that these, in turn, would determine these species' adaptability limits and …
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Co-orthologs of KATANIN1 Impact Plant Morphology and Show Differential Evolution in Maize
Understanding how the size and shape of crop plants and their specific organs are genetically controlled may allow for the development of cultivars with improved plant architecture. A microtubule-severing enzyme called katanin p60 is encoded by KATANIN1 (KTN1) in Arabidopsis or by an ortholog, …
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A systematic study of indehiscent-fruited yuccas in the Chihuahuan Desert
Plants of the genus Yucca (Family Agavaceae) are strictly of New World distribution, occurring in the U.S., Mexico, and Central America. Because of the great size of many members of the genus, and because of previous inaccessibility of much of their ranges until fairly recently, little has been …
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Preserving Traditional Botanical Knowledge in a Developing World: A Case Study.
… botanical knowledge is the knowledge of how plants are being cultivated and used by the indigenous cultures. Modern western culture exhibits a shortage of traditional and formal botanical knowledge. In this project I took 103 common edible plants found in the grocery store and applied both …
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Imaging nanoscale pollen morphology with Superresolution Structured Illumination Microscopy
Applications in the plant sciences that stem from disciplines as diverse as phylogenetics, physiology, and paleoecology all require ever-increasing imaging resolutions for accurate investigations of morphological hypotheses. Of these applications, the visualization of nanoscale plant morphology, …
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Density and efficacy of the flea beetle Aphthona Lacertosa (Rosenhauer), an introduced biocontrol agent for leafy spurge, in Alberta
… degree-days (CDD) at the release site and plant lacertosa are affected by cumulative degree-days (CDD) at the release site and plant morphology, respectively. Beetle population growth may be enhanced by releasing A. lacertosa at sites where there are more CDD. It is expected that high …
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Physiological studies and modeling of photoperiodic effects on flowering and maturity in soybeans (Glycine max (L.) Merr.) differing in maturity
… flowering in relating to physiology, phenology, morphology, as well as modeling from three years (1992-1994) of field and controlled experiments. These studies indicated that photoperiod affected soybean growth and development in all stages after emergence, including floral bud induction and …
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Studies With Triazoles to Alleviate Drought Stress in GreenHouse-Grown Maize (Zea mays) Seedlings
… exposes crops to drought stress. Although some plant species are well adapted to drought, most crops are not. Drought can reduce plant populations and limit growth and development in ways that have serious yield consequences. Planting at the beginning of the wet season, when rainfalls are often …
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Studies of herbivory and vegetation change in Karoo shrublands
… background of relationships between indigenous plants and animals and to indicate how modification of herbivore regimes might affect this arid environment. Specific objectives were to determine how grazing by domestic livestock brings about vegetation change, why such changes are sometimes …
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UVB radiation; a specific regulator of the growth and development of Arabidopsis thaliana
Research into the impacts of UVB radiation on plants and ecosystems began in the 1970’s in answer to concerns about the degradation of the stratospheric ozone layer. Early research focused solely on UVB as an agent of plant stress but recently the thinking surrounding UVB has undergone a paradigm …
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A Geographic Mosaic of Speciation in Eurosta solidaginis
… I found that differences in the host plants, flies, and their natural enemies were distributed in a geographic mosaic at the prairie-forest biome border. Some neighboring populations were highly differentiated in a range of characteristics while others showed less differentiation. I …
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Molecular, Genetic, and Agronomic Evaluation of Wp and Wp-M in Soybean
… to quantitative trait loci (QTL) responsible for plant morphology. The influence of anthocyanin, protein biosynthesis, and morphological traits by wp and wp-m is a unique occurrence that has not been reported in other plant species.
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Determining Hydraulic Characteristics in Close Proximity of Hymenocallis coronaria within the Flint River Basin, Georgia
… a narrow habitat for optimal survival. Each plant species adapts to a set of conditions that meets the physiological requirements to grow and reproduce. The influence of hydraulic characteristics on plant morphology is significant within fluvial systems. Macrophytes must be able to withstand …
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Genetics and Ecology of the Invasive Marine Alga, Sargassium Miuticum within Wales: A Multidisciplinary Approach to a Management Problem
… investigations demonstrated variability in plant morphology dependent on environmental conditions. Growth and reproductive phenology of the alga within Wales appears similar to other introduced populations within the UK, although there was variability5 in the extent of fertility between …
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Physiological and Morphological Responses to Drought Stress in Different Cultivation Environments in Wild Type and ABA-deficient Barley
… change, drought is one of the most critical for plant survival and reproduction, shaping plant morphology and physiology and therefore crop productivity. Although the effects of drought on plants are widely studied, studies are often conducted in controlled greenhouse or laboratory conditions …
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3D machine vision system for robotic weeding and plant phenotyping
… system should be capable of differentiating crop plants and weeds to avoid contaminating crops with herbicide or damaging them with mechanical tools. For the plant genetics industry, automated high-throughput phenotyping technology is critical to profiling seedlings at a large scale to facilitate …
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The role of aquatic vegetation on oscillatory flows and sediment transport
… is divided in three stages: 1. Assessment of plant morphology, 2. Hydrodynamics of oscillatory flows through patches of vegetation, and 3. Vegetation-sediment interactions driven by oscillatory, vegetated flows. First, our study evaluates experimentally the effect of vegetation morphology, …
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The natural recolonisation process of the seagrass Posidonia oceanica (L.) Delile after the introduction of the Italo-algerian methane pipeline in the SW Mediterranean Sea.
… and in particular how the feedback between plant recruitment, sediment dynamics and water flow is created in this new artificial environment. The results indicated how P. oceanica recruits via vegetative fragments which break from the meadow during storms. However, vegetative recruitment …
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Soilless Substrate Hydrology and Subsequent Impacts on Plant-Water Relations of Containerized Crops
… Substrate-water dynamics were monitored, as were plant morphology and drought stress indicators. It was determined that increased substrate unsaturated hydraulic conductivity within the production water potentials, allowed for increased crop growth, reduction in drought stress indicators, while …
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