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2009

Masters Theses

Plant Sciences

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Full-Text Articles in Life Sciences

The Effects Of Ultraviolet Radiation On Pigment Production, Growth, And Photochemical Efficiency In Allium Spp, Kristin Renee Abney Dec 2009

The Effects Of Ultraviolet Radiation On Pigment Production, Growth, And Photochemical Efficiency In Allium Spp, Kristin Renee Abney

Masters Theses

In the 1970s, a push for research on the effects of ultraviolet (UV) radiation on food crops began. Since that time, multiple agricultural and horticultural crops have been studied with results showing that the morphological and physical reactions are species dependent. The purpose of these studies to determine how increasing UV radiation affects Allium fistulosum L. (scallion onions) and Allium tuberosum Rottl. (garlic chives), and how UV radiation affects 16 cultigens of A. fistulosum. The effects of UV radiation were determined by shoot height, fresh weight, carotenoid and chlorophyll pigment concentrations, and photochemical efficiency (Fv/Fm). …


Effect Of Selenium On Glucosinolate And Isothiocyanate Concentrations In Arabidopsis Thaliana And Rapid-Cycling Brassica Oleracea, Thomas Casey Barickman Dec 2009

Effect Of Selenium On Glucosinolate And Isothiocyanate Concentrations In Arabidopsis Thaliana And Rapid-Cycling Brassica Oleracea, Thomas Casey Barickman

Masters Theses

Brassica vegetables play a unique nutritional and sensory role in human diets around the world. Their characteristic flavors come from the break down products of glucosinolate (GS) compounds, a large group of nitrogen (N) and sulfur (S) containing glucosides. Glucosinolates are hydrolyzed by myrosinase to isothiocyanates (ITCs) which are biologically active. Mounting evidence of this process is of scientific interest due to the potential for high consumption of Brassica vegetables containing several GSs and their respective hydrolysis products that are associated with cancer chemoprevention. Glucosinolates are sulfur-rich hydrophilic, nonvolatile plant secondary metabolites; and. over the past few decades, their importance …


Impacts Of American Student Teachers On Twelve Community Members In A Rural New South Wales Community Australia: A Qualitative Study, Tera Shenae Bunch Dec 2009

Impacts Of American Student Teachers On Twelve Community Members In A Rural New South Wales Community Australia: A Qualitative Study, Tera Shenae Bunch

Masters Theses

The purpose of this study was to evaluate the influences of American student teachers on a rural community in New South Wales, Australia. The study analyzed interviews with twelve participants of the American student teacher program in A Rural New South Wales community, Australia. Two researchers worked together to complete this study. Both researchers were student teachers with the New South Wales community for ten weeks and taught Agriculture in one the community‟s two high schools. After allowing one year to pass, researcher one returned to the community to interview twelve individuals involved with the program. The interviewed participants were …


A Study Of The Effects Of Applying Flue Gas Desulphurization Gypsum To Various Agronomic Crops, Jordan Ryan Combs Dec 2009

A Study Of The Effects Of Applying Flue Gas Desulphurization Gypsum To Various Agronomic Crops, Jordan Ryan Combs

Masters Theses

Flue Gas Desulfurization (FGD) gypsum is a potential soil amendment for agricultural use in the state of Tennessee. FGD gypsum is a potential source of calcium and sulfur that may improve the soil both chemically and physically. FGD gypsum has the potential to raise pH, improve soil structure, increase infiltration rates, ameliorate subsoil acidity and improve crop yields. However, the addition of gypsum can also lower pH in some circumstances and cause magnesium and potassium losses in soil. In this study FGD gypsum was applied at a single rate to fields on thirteen farms located on the northern and southern …


“Growing Up Green: A Study Focusing On Environmental Attitudes, Knowledge And Focusing On Environmental Attitudes, Knowledge And Behaviors Of Elementary Children.”, Sarah Elizabeth Smith Aug 2009

“Growing Up Green: A Study Focusing On Environmental Attitudes, Knowledge And Focusing On Environmental Attitudes, Knowledge And Behaviors Of Elementary Children.”, Sarah Elizabeth Smith

Masters Theses

“Growing Up Green,” is a research based environmental education program that teaches children about recycling, energy conservation, and composting. This program was taught to fourth grade students at H.B. Williams Elementary School, in White House, Tennessee. The children were given a pre-test before the program and a post-test two weeks after the program. The pre and post-test was composed of three parts. The three parts tested their environmental attitudes, knowledge, and behaviors. The study found that most of the children already had positive attitudes toward the environment. While, their attitudes decreased minimally after the program, they still remained very positive. …


Soybean Enhancement For Improved Biodiesel Production, Benjamin David Fallen Aug 2009

Soybean Enhancement For Improved Biodiesel Production, Benjamin David Fallen

Masters Theses

As energy prices continue to rise, concern grows about the economy and about petroleum supplies. On January 1, 2009 The Energy Independence and Security Act of 2009 was enacted. It states that 500 million gallons of biomass-based biodiesel must be produced in 2009 and 1 billion gallons by 2012. In the United States 90 % of the biodiesel is produced from soybean oil, despite its shortcomings. The biggest problem facing the soy diesel industry is the American Society of Testing and Materials (ASTM) specifications for Biodiesel and Biodiesel Blends. The two categories that are in need of immediate improvement to …