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 25 for “"root architecture"”.
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Exploring relationships between root architecture and growth of UK wheats (Triticum aestivum L.)
… during the grain filling period, growing deep rooting cultivars increased wheat yields by approximately 15%. Seedling root angle is associated with adult root system depth in Australian field-grown wheat cultivars (Triticum aestivum L.), but it is not yet known whether selection for root angle …
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THE INTERPLAY BETWEEN ETHYLENE SIGNALING AND FLAVONOL ANTIOXIDANTS IN MODULATING STOMATAL MOVEMENT AND ROOT ARCHITECTURE
… the individual receptor isoforms in modulating root architecture. Combined, these chapters highlight novel signaling mechanisms that control gas exchange and water loss through stomata as well as the development of root systems that are responsible for water and nutrient uptake.
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Characterization of the Role of miR156-SPL12 Regulatory Module in Root Architecture and Stress Response in Medicago sativa (alfalfa)
… increased nodulation, nitrogen fixation, and root regenerative capacity during vegetative propagation. In alfalfa, transcripts of 11 SPLs, including SPL12, are targeted by miR156. Our understanding of the functions of SPLs and their mode of action in alfalfa’s nodulation and nitrogen fixation …
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Exploring the role of auxin in phenotypic plasticity in Arabidopsis thaliana root development
… the initiation and emergence of lateral roots. In this study we used several approaches to reduce auxin transport moving either from the shoot toward the root apex or from the root tip toward the base and examined the effect of these treatments on lateral root initiation and emergence. …
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STUDY OF LOCAL ENVIRONMENTAL CONTROL OF ROOT SYSTEM ARCHITECTURE
… environment in nature, especially the root system. In a relatively small volume, soils vary greatly in texture, nutrient contents, pH, and moisture content, all of which has a great impact on shaping root architecture. Work presented in this thesis reveals that under normal growth …
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Combining genotyping-by-sequencing data sets for GWAS and GWS study for maize root System architecture traits
Maize has a sophisticated and complex root architecture that is important for plant anchorage and uptake of nutrients and water. Tools such as genome-wide association (GWAS) and genome-wide selection (GWS) can help the breeders to make decisions about which genotypes should advance in their …
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A revision of Otholobium C.H. Stirton (Papilionoideae, Leguminosae)
… chromosome numbers, petiolar anatomy, root architecture, nodule type, inflorescence architecture, 6AH-pterocarpan and 6a-hydroxy analogue chemistry, pollen anatomy and morphology. A cladistic analysis was made of the genera in the Psoraleeae.
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Evaluation of Barley (Hordeum vulgare L.) Stem and Root Traits that Influence Lodging
… within a set of field-based plant, stem and root mechanical and architectural traits that were well correlated to lodging, and 2) to identify and evaluate traits within a set of lab-based root architecture traits that were well correlated to lodging. To address the first objective, 13 spring …
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Identification and generation of new germplasms in barley with increased tolerance to waterlogging
… height, tiller number, chlorophyll content and root architecture were assessed in order to select varieties that are more tolerant to waterlogging
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MtCEP1 peptides regulate lateral organ development in the model legume, Medicago truncatula
… for its regulation of nitrogen-mediated root development, most particularly, lateral root and nodule formation. The MtCEP1 peptide-encoding gene is upregulated by low nitrogen condition, an environmental cue which strongly regulates both lateral root and nodule formation. Therefore, …
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MtCEP1 peptides regulate lateral organ development in the model legume, Medicago truncatula
… for its regulation of nitrogen-mediated root development, most particularly, lateral root and nodule formation. The MtCEP1 peptide-encoding gene is upregulated by low nitrogen condition, an environmental cue which strongly regulates both lateral root and nodule formation. Therefore, …
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Characterization of the effect of nitrogen deficiency on above-ground plant phenotypes in relation to root complexity in maize
… lower N pollution. It is well known that roots are responsible for N uptake by plants, but it is relatively unknown how root architecture affects this ability. This research was conducted to better understand the influence of root complexity (RC) in maize on a plant’s response to N stress …
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Integrating Above and Belowground Components of Biodiversity across Spatial Scales: The Role of Host Plants in the Distribution of Arbuscular Mycorrhizal Fungi
… (AM) fungi are a group of obligate plant root endosymbionts, which form associations with an estimated two thirds of terrestrial plant species. Their extra-radical mycelium extends throughout the soil and absorbs nutrients that are transferred to their host plant in exchange for a purely …
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Non-invasive monitoring of water and solute fluxes in a cropped soil
Although the influence of root water uptake on solute transport is commonly recognized as important, it has barely been studied throughout the literature. However, plants take up a big amount of the infiltrating water and therefore they influence water flow patterns in the soil and concurrently …
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Effects of Elevated Atmospheric CO2 on Root Dynamics, Biomass and Architecture in a Scrub-Oak Ecosystem at Kennedy Space Center, Florida
… ecology lies with our understanding of root system growth, function and distribution. Large belowground structures, in addition to fine roots, are of particular interest because of their role in carbon sequestration. Non-destructive methods, including ground-penetrating radar (GPR) and …
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Genetic Control of the Response to Sulfur, Nitrogen, and Phosphorus Supply in Arabidopsis thaliana
… deficiency. Traits such as biomass allocation or root architecture were suggested as potential targets in the process of developing new crop varieties. This analysis is unique since, to my knowledge, it is the first one which provides the characterisation of arabidopsis response to nutrient …
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Relationships among Root Traits, Nitrogen Availability, and Mineral-Associated Organic Carbon
… This dissertation investigates how plant root traits, nitrogen (N) fertilization, and cover cropping influence soil organic carbon (SOC) and MAOC. In the first chapter, a greenhouse experiment with 30 herbaceous plant species found that non-N-fixing plants exhibited stronger positive …
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Effects of co-inoculation of Delftia acidovorans RAY209 on the growth of Bradyrhizobium diazoefficiens USDA110 inoculated Glycine max
… were found in growth parameters between soybean roots inoculated with USDA110 and RAY209+USDA110, RAY209 produced considerable amounts of indole-3-acetic acid (IAA), a phytohormone that can potentially stimulate plant growth and cause modification of root architecture. Differential transcriptome …
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Does root complexity affect the response of maize (Zea mays spp. mays) to abiotic stresses?
… and water acquisition, it is obvious that the root system of the maize plant is essential. Given the importance of the root system in plant performance, it is intuitive that differences in root characteristics would impact the performance of maize under water and nutrient limited conditions. …
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Coarse Root Biomass and Architecture: Applications of Ground Penetrating Radar
… radar (GPR) to identify and quantify coarse roots was tested in a mixed-oak forest in Southeastern Virginia using experimental pits and locally excavated root segments. GPR was found to be highly dependent on low soil moisture levels as it is unable to differentiate root structures if they …
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