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.
Results
Showing 1 to 11 of 11 for “"plant age"”.
-
The influence of plant age and nitrogen rate on nutrient removal from the container medium solution
… crops is a major concern to container plant production practices. The extent to which nutrients are removed by the plant from the medium solution of a container, however, has never been demonstrated. Mariogold, Tagetes erecta ‘Inca’ seeds were glasshouse-grown in 500 cc plastic pots …
-
Free amino acid composition of flatpea (lathyrus sylvestris L.) as influenced by water-deficit stress, nitrogen fertilization, developmental stage, and rhizobium inoculation
… in leaves and stems increased slightly with plant age. Higher nitrogen availability increased the content of A₂bu in flatpea, a response accompanied by an increase in the contents of soluble protein and other nitrogenous compounds. When exogenous nitrogen supply was decreased, A₂bu levels …
-
Partitioning and Utilization of Apparent Photosynthate by Soybean (Glycine Max (L.) Merr.) Relative to Nitrogen Source: Nitrogen vs Nitrate
… respectively serving as sole source of nitrogen. Plants were evaluated on the basis of whole plant efficiency of apparent photosynthate utilization relative to nitrogen assimilation (expressed as the ratio of moles of carbon respired by the whole plant to the moles of nitrogen incoporated into …
-
Effect of oxygen and carbon dioxide tensions on release of sugars from peanut roots under gnotobiotic conditions
… the sugars exuded from the roots of peanut plants grown under gnotobiotic conditions. Seed from the peanut plant, Arachis hypogaea, L. var. NC-2 was used, Peanut embryos, with the cotyledons removed, were surface sterilized; placed aseptically into sterile plexiglass isolator chambers; and …
-
Hurricane and human-induced habitat changes on Fire Island and Westhampton Island, New York, and the effects on breeding piping plovers (Charadrius melodus)
… increased dune elevation and stabilized dunes by planting American beachgrass (Ammophila breviligulata). They built two restoration areas to mitigate the impact of an island stabilization project to federally listed breeding piping plovers (Charadrius melodus). The goal of this thesis was to …
-
Aspects of coastal fynbos phenology
… other factors such as root depth and extent, plant age and water-use, and soil water-holding capacity affect the timing of shoot or culm growth in some species. In the final paper the seasonality of reproductive activity is discussed in relation to the seasonality of vegetative growth and to …
-
Identification and Characterization of Genes Involved in Regulation of Ascorbate Metabolic Pathway(s) in Arabidopsis thaliana
… acid, AsA), an important primary metabolite of plants, functions as an antioxidant, an enzyme cofactor, and a cell-signaling modulator in a wide array of crucial physiological processes including biosynthesis of the cell wall, secondary metabolites and phytohormones, stress resistance, …
-
Burkholderia phytofirmans strain PsJN effects on drought resistance, physiological responses and growth of switchgrass
… could be achieved by reducing traditional management practices though applying plant growth promoting rhizobacteria (PGPR), of which our understanding is still rather limited. To elucidate physiological mechanisms behind PGPR's beneficial effects, we inoculated switchgrass seedlings with …
-
Oxygen control of nitrogen fixation in Frankia and Coriaria arborea
… asymbiotic Frankia and Frankia - actinorhizal plant symbioses. Daily addition of fresh medium at a low dilution rate (D=0.125 day⁻¹) allowed Frankia to be maintained in continuous culture with a stable rate of growth and nitrogenase activity for periods of more than 30 days. Use of continuous …
-
Optimizing Weed Management via Microwave Irradiation
… effective, as the electromagnetic waves heat the plant tissue and destroy cellular integrity. The objective of this research was to evaluate the potential use of dielectric heating for weed management. Ten weed species representing monocots and dicots were selected for this study: southern …
-
Vulnerability of Coal- and Natural Gas-Fired Power Plants to Climate Change
… will reduce the efficiency (η) of thermoelectric plants by 0.12-0.45% for each 1°C of warming. In Chapter 2, we evaluate these predictions using historical performance data for 39 open- and closed-loop, coal and natural gas plants from across the U.S., which operated under daily and seasonal …