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 morphology"”.
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Root Morphology and Sexual Dimorphism : Size Standards for Crown and Root Dimensions in Adolescents
<p>“Early” or two-phase orthodontic treatment of Class II malocclusions is a highly debated topic in the orthodontic literature. We report here on a retrospective cephalometric study of patients with Class II, division 1 malocclusions. One group consisted of 32 consecutively treated patients who …
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Quantifying soil compaction effects on soil macropores and corn root morphology through image analysis
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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The Heritability of Seedling Stage Drought Resistance in Rape and Its Relationship to Seedling Root Morphology
… campestris L.) and its association with seedling root morphology. The heritabilities of seedling stage drought resistance, based on percentage survival data from 40 half-sib families grown under high and low water stress conditions were 43% and 63%, respectively. Comparisons of digital image …
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A variant of bean pod mottle virus ; Altered root morphology of bean pod mottle virus-infected soybeans
Digitized by Kansas Correctional Industries
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Root Problems in Human Variation
… is an investigation of post-canine tooth root morphology in a global sample of modern humans. Tooth roots are variable in number, shape and orientation, and internal canal form and number do not necessarily covary with external morphology. However, this variation is poorly understood in …
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Novel Approach to Assess Periodontal Disease Severity Using Volumetric Analysis
… of a maxillary central incisor at full and half root length along the vertical axis is directly proportional to volumetric change. The secondary aim was to evaluate if the variation of root volume is influenced by difference in root morphology.</p> <p>Three dimensional digital models of 70 random …
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The Effects Of Clinorotation In The Host Plant, Medicago Truncatula, And Its Microbial Symbionts
… performed. Plant development was quantified and root morphology was measured using the program GiA Roots and nodule numbers and size were counted and measured in Image J. AMF colonization was quantified using Alexa Fluor 488 and the magnified intersection method. Clinorotation significantly …
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Creeping Bentgrass, Kentucky Bluegrass and Tall Fescue Responses to Plant Growth Stimulants Under Deficit Irrigation
… if they impacted physiological function and/or root morphology. A preliminary greenhouse experiment was conducted with creeping bentgrass and Kentucky bluegrass irrigated with 100%, 85% and 70% of evapotranspiration (ET). The study determined that an additional deficit irrigation level should be …
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Lateral development in roots and shoots of Pinus radiata seedlings
Under natural conditions, short-roots of pines usually occur in intimate association with basidiomycetous fungi, forming symbiotic relationships known as ectomycorrthizas. Although mycorrhizas have been most extensively studied in regard to their nutritional contribution to host plants, there is …
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EFFECTS OF NITROGEN DEPOSITION ON BOREAL BOGS: A THREE YEAR NITROGEN FERTILIZATION AND TRACER EXPERIMENT
… N pools (including microbial communities, moss, roots, litter, and aboveground vascular plants) and how these N pools process and retain applied N in four ombrogenous bogs in northern Alberta, Canada. Linear growth of Sphagnum mosses was highly variable. However, both capitulum and stem weight …
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Concentration dependency, mode of action and characterization of compounds involved in alfalfa autotoxicity
… crops. Incorporation of fresh alfalfa residue--roots only or roots and shoots both--reduced alfalfa emergence, plant height and dry weight. Primary effect of water-soluble inhibitory compounds from alfalfa shoot appeared to be on germination and radicle elongation, the latter being more …
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Physiological response of loblolly pine seedlings to moisture-stress conditioning and their subsequent performance during water stress
… stress than shoot growth, causing a decrease in root/shoot ratio. Changes in root morphology as a result of conditioning are not likely to improve the drought tolerance of loblolly pine seedlings. SWS conditioning significantly improved the height growth increment and resulted in slightly greater …
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Pyrolysis Processing and Feedstock Impact on Biochar Soil-Plant Interactions
… evaluate biochar effects on nodule formation and root morphology compared to the “wild” genotype. Biochar treatments at a 1% application rate increased nodule formation and plant biomass across all genotypes. The lack of inhibition by biochar on nodule formation in the “wild” genotype suggests …
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Growth and Physiological Responses to Fertilizer Application in Clonal Loblolly Pine
… not observed. Clonal variability was observed in root morphology, and maximum rooting depth showed a significant clone-by-fertilizer interaction. Clones with rapid growth rates can be selected with a range of other desirable traits. Short-term (i.e. weeks) responses to fertilization are often …
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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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The prevalence of second canals in the mesiobuccal root of maxillary molars in a South African subpopulation : a cone beam computed tomography study
… a thorough understanding of the anatomy of the root canal system, in order to adequately debride, disinfect, and obturate teeth affected by irreversible pulpitis or pulp necrosis. High endodontic failure rates are frequent in the maxillary molar tooth owing to the complexity of their root canal …
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Soil factors and competition as determinants of fynbos plant species distributions in the South-western Cape, South Africa
… occur in deep and shallow sands respectively. Root morphology, water relations and phenology of adult ( 15 yr-old) plants were studied over two years in the field. Differences between these species constituted habitat-specialization for soils of different depth. A laboratory study of seedling …
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Prediction of Root Form Using Crown Data: Mandibular Left First Premolar
… first premolar, consisting of both crown and root data, could adequately describe the root form from a surface scan consisting of only crown data. Secondly, it tested if there were any angles or measurements on the tooth crown that correlate with any aspects of root morphology. The average …
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Assessment of disease suppression in organic transitional cropping systems
… been shown to lower the severity of soilborne/root-infecting diseases, a phenomenon known as organic matter mediated suppression. The aim of this study was to investigate the effect of adding organic matter, through cropping systems (pasture, cash grain, vegetable) and direct organic amendments …
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