Plant Sciences electronic theses and dissertations (MU)
The items in this collection are the theses and dissertations written by students of the Division of Plant Sciences. Some items may be viewed only by members of the University of Missouri System and/or University of Missouri-Columbia. Click on one of the browse buttons above for a complete listing of the works.
Items in MOspace are protected by copyright, with all rights reserved, unless otherwise indicated.
Recent Submissions
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A comparative study of the Lupinus parviflorus complex
(University of Missouri--Columbia, 1972)The taxonomic history of the genus Lupinus began with Linnaeus who adopted Tournefort's term. Even a cursory look at the subsequent history of the genus brings to the forefront the diversity of opinions that have been ... -
Nutrition and feeding behavior of the southwestern corn borer Diatraea grandiosella Dyar (Lepidoptera : pyralidae)
(University of Missouri--Columbia, 1972)The aim of the study was: 1) to determine the nutritional requirements of the southwestern com borer for proteins, carbohydrates, lipids, minerals and vitamins, 2) to measure the effects of carbohydrates and lipids on the ... -
A study of the progeny of hybridization in lupinus
(University of Missouri--Columbia, 1977)Several modes of study were undertaken utilizing hybridization between L. bilineatus and L. campestris. The study of cytology revealed the two species and their progeny to apparently be octaploid, possessing 48 (2n) ... -
Photoperiodic time measurement and seasonal adaptation of the southwestern corn borer, Diatraea grandiosella Dyar (Lepidoptera : Pyralidae)
(University of Missouri--Columbia, 1978)"Photoperiodism is an adaptation which enables organisms to maintain maximum reproductive and survival efficiency under periodically changing environmental conditions. Since daylength is astronomically stable, it gives ... -
Comparative study of the ultrastructure and metabolism of the fat body of diapausing and nondiapausing larvae of the southwestern corn borer, Diatraea grandiosella Dyar (lepidoptera : pyralidae)
(University of Missouri--Columbia, 1976)"The southwestern corn borer, Diatraea grandiosella (Dyar), is a pyralid moth which enters diapause as a mature larva and is bivoltine under Missouri conditions. The bionomics of the species have been reviewed in several ... -
Environmental regulation of the larval diapause of the southwestern corn borer, Diatraea grandiosella Dyar (Lepidoptera : pyralidae)
(University of Missouri--Columbia, 1973)Diapause is a state of arrested growth or reproduction which is commonly found in insects (Lees, 1955). It may occur at any stage in the life cycle of an insect and is usually an important adaptation in the development of ... -
Plant succession on Missouri strip-mined land
(University of Missouri--Columbia, 1974)There are many agencies which create successional areas--water, as flood or glacier; wind, as hurricane or tornado; volcanic activity, as ash or lava flow; or man, as seeker of energy sources, lumbering or mining. It is ... -
Improving water management in a small subsurface drip irrigation
(University of Missouri--Columbia, 2023)[EMBARGOED UNTIL 8/1/2024] In this study, the effects of three water application treatments on four sweet corn varieties were examined, focusing on harvest quantity and quality, using subsurface drip irrigation. The study ... -
Regeneration of soil microbial, physical, and chemical properties in restored bottomland hardwood forest wetlands
(University of Missouri--Columbia, 2023)[EMBARGOED UNTIL 8/1/2024] Wetlands provide a wide range of important ecological services, including flood mitigation, habitat for wildlife, and nutrient retention. The Wetland Reserve Easement (WRE) Program [formerly the ... -
Assessing biotic communities and the capacity of restored bottomland hardwood forested wetlands to provide multiple ecosystem functions
(University of Missouri--Columbia, 2023)[EMBARGOED UNTIL 8/1/2024] The Agricultural Conservation Easement Program, and associated Wetland Reserve Easement (WRE) program were established to restore private marginal agricultural land to wetlands following major ... -
Neuropeptide bursicon homodimer's roles in reproduction and innate immunity of the red flour beetle, Tribolium castaneum
(University of Missouri--Columbia, 2023)[EMBARGOED UNTIL 8/1/2024] Bursicon is a cystine knot family neuropeptide, composed of bursicon (burs) and partner of burs (pburs) subunits, and can form heterodimers and homodimers to execute different biological functions. ... -
Uncovering limitations and opportunities in nitrogen fixation in soybean using genetic mapping and transgenic approaches
(University of Missouri--Columbia, 2023)[EMBARGOED UNTIL 8/1/2024] Soybean [Glycine max (L.) Merr.] is one of the most valuable crops world-wide and is the most cultivated legume. Symbiotic N fixation (SNF) evolved as it confers a competitive advantage to soybean ... -
Conserving monarch butterflies through habitat management and policy
(University of Missouri--Columbia, 2023)[EMBARGOED UNTIL 8/1/2024] Monarch butterflies (Danaus plexippus) are in decline, with a 91 percent population reduction since 1996. Habitat loss is a major contributor to this decline. The milkweed plant (Asclepias spp.) ... -
Engaging diverse high school students in Missouri through a deliberative climate change forum
(University of Missouri--Columbia, 2023)Climate change is the most pressing environmental issue in the 21st century. Its effects increase in severity due to human actions that negatively impact natural resources. This produces risks to human health, food security, ... -
Key factors related to agroforestry adoption in Vermont
(University of Missouri--Columbia, 2023)The study "Agroforestry Extent in the United States: A Review of National Datasets and Inventory Efforts (Smith. et al., 2022) examined the successes and challenges of Agroforestry implementation. Of note was the use of ... -
Restoration treatments and regeneration dynamics in East Texas mixed wood forests
(University of Missouri--Columbia, 2023)Extensive harvesting, fire exclusion, and plantation forestry altered composition and structure, and thus function and habitat values of east Texas Pineywoods uplands. Upland restoration efforts are made difficult by the ... -
Agroforestry and cover crops for improving surface water and groundwater quality
(University of Missouri--Columbia, 2023)Unsustainable agricultural practices and the rapid expansion of agricultural lands to satisfy the food demand of the growing world population have caused significant sediment, and nutrient losses from agricultural fields, ... -
Relationship of habitat variables and observation data on muskrat occupancy in an urban green space waterway : a case study from Forest Park, St. Louis, USA
(University of Missouri--Columbia, 2023)Urban green spaces (UGS) are high value areas that strive to serve both ecological and social goals. Quality stewardship of these areas require that all components affecting the ultimate site goals be addressed in not only ... -
Drainage water management practices affect water quality, soil properties, and crop production
(University of Missouri--Columbia, 2023)Several agricultural management practices such as terrace construction, cover crops (CC), drainage water recycling (DWR), free drainage (FD), and 4R nitrogen (N) management can influence water quality, soil properties, and ... -
Ecology and management of oak regeneration in bottomland hardwood forests in Missouri
(University of Missouri--Columbia, 2023)Managing oak regeneration is a challenge in bottomland hardwood forests due to variations in acorn production, acorn predation, competition with other species, and flooding. This study was designed to investigate bottomland ...