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- Invasive species (2)
- Leaves (2)
- Aldehydes (1)
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- Arctotheca prostrata (1)
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- California (1)
- Cellulosic ethanol (1)
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- Packera paupercula variety gypsophila (1)
- Plant genetics (1)
- Potamogeton crispus L. (1)
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Articles 1 - 6 of 6
Full-Text Articles in Plant Breeding and Genetics
Characterization Of The Genetic Diversity Of Curlyleaf Pondweed (Potamogeton Crispus L.) In The Contiguous United States And Canada And Analysis Of Possible Hybrid Potamogeton Crispus Lineages, Mallory M. Kaiser
All Graduate Theses, Dissertations, and Other Capstone Projects
Curlyleaf Pondweed (Potamogeton crispus L.) is a prolific invasive species that has spread across the United States and into parts of Canada since its introduction to North America in the 1840s. It causes extensive economic and environmental damage across its invasive range, and its control and eradication are of utmost importance to agricultural, ecological, recreational, and transportational stakeholders. Developments in molecular ecology and invasive management have found that genetic diversity and hybridization of aquatic macrophytes may affect their susceptibility to herbicide treatments, and genotype or lineage identification are important control variables that must be considered in field and …
Chromosome Counts For Packera Paupercula Variety Gypsophila, Chad Larson
Chromosome Counts For Packera Paupercula Variety Gypsophila, Chad Larson
Journal of Undergraduate Research at Minnesota State University, Mankato
New plant species develop when diploid plants (having two sets of chromosomes) spontaneously double their chromosomes and the resulting tetraploids (having four sets of chromosomes) are no longer able to back cross to diploid members of the population. The North American plant species Packera paupercula (balsam-leafed ragwort), is widespread and morphologically diverse. An isolated group of populations from the chalky soils of west-central Alabama was recently named Packera paupercula variety gypsophila (the chalk-loving balsam ragwort). The variety’s large diameter pollen grains suggest it may be tetraploid. This project attempts the first chromosome count for the variety by examining cells undergoing …
Characterization Of Fall Leaves As A Source Of Cellulosic Ethanol, Justin Burum
Characterization Of Fall Leaves As A Source Of Cellulosic Ethanol, Justin Burum
Journal of Undergraduate Research at Minnesota State University, Mankato
Ethanol is becoming increasingly popular as a fossil fuel additive or substitute. However, current production of ethanol from corn impacts food prices and appears to have an overall low net yield. New sources need to be identified and new processes developed for ethanol production. Cellulosic ethanol is one such new source. Plant material contains a large amount of cellulose and other polysaccharides which are potential feed stocks for ethanol production. The purpose of this experiment was to characterize the polysaccharide, lignin, and ash content of fall leaves to estimate their potential for ethanol production. A slight modification of the NREL …
Expression Of 9/13 Hydroperoxide Lyase In Cucumber Leaves, Samee Ranginwala
Expression Of 9/13 Hydroperoxide Lyase In Cucumber Leaves, Samee Ranginwala
Journal of Undergraduate Research at Minnesota State University, Mankato
Fatty Acid 9/13-Hydroperoxide Lyase (9/13-HPL) in the cucumber plant is an enzyme that cleaves either 9- or 13-hydroperoxides of polyunsaturated fatty acids to form volatile C9 or C6 aldehydes respectively. Since these aldehydes may play a role in the plant’s defenses against pathogens (K. Matsui, et. al. Phytochemistry 67 (2006) 649-657), the enzyme is stress induced during vulnerable times such as when the plant is injured. In order to better understand how this enzyme is induced, we have developed a Real Time Polymerase Chain Reaction method to quantitate levels of 9/13-HPL mRNA. In initial experiments, the effect of mechanical wounding …
Influence Of Ultraviolet Radiation On Cell Wall Constituents In Reduced-Lignin Mutants Of Corn And Sorghum, Brock Bermel
Influence Of Ultraviolet Radiation On Cell Wall Constituents In Reduced-Lignin Mutants Of Corn And Sorghum, Brock Bermel
Undergraduate Research Symposium
Brown midrib mutants (BMR) of corn (Zea mays) and sorghum (Sorghum bicolor) have reduced lignin content and have recently gained popularity in Southern Minnesota as forage material for grazing animals. These mutants have lowered expression of cinnamyl alcohol dehydrogenase and caffeic O-methyltransferase enzymes in the phenylpropanoid pathway responsible for the construction of the cinnamyl alcohol subunits of lignin. Lignin is found in the secondary cell wall of higher plants, along with substantial amounts of cellulose and hemicellulose polysaccharides. Reduced lignin increases livestock digestibility of these plants, but may also increase susceptibility to environmental stress and lodging. …
Testing The Fertility And Allelopathic Abilities Of Arctotheca Prostrata (Salisb.) Britten (Asteraceae, Arctotideae), A South African Plant Species That Has Naturalized In California, Jordy Veit
All Graduate Theses, Dissertations, and Other Capstone Projects
Arctotheca prostrata is a perennial plant species native to South Africa that reproduces vegetatively by long runners. In South Africa it also reproduces sexually, producing fruits with fertile seeds. The species was brought to California to serve as a ground cover but fruits had not been reported. Historically, it has been said to be infertile. This study tested the fertility of A. prostrata in California by crossing plants from California with each other and with plants grown from imported South African seeds. Pollen viability was tested and morphological measures were made on heads, leaves, and pollen. Mean Californian and South …