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The Effects Of Drought And Shade On Bottomland Hardwood Regeneration, Charles Joseph Pell
The Effects Of Drought And Shade On Bottomland Hardwood Regeneration, Charles Joseph Pell
LSU Doctoral Dissertations
Floodplain forests support a high diversity of tree species adapted to regenerate under fluctuating water and light availability. Regeneration regulates species composition, and shade and flood tolerance influence the likelihood of regeneration. Regeneration failure of shade-intolerant and flood-tolerant tree species commonly occurs in southcentral and southeastern floodplain forests of the United States, also known as bottomland hardwoods (BLHs). In many BLHs reduced flooding has resulted in a dryer floodplain. These changes in flooding are linked to recent shifts in species composition. The mechanisms controlling regeneration in BLHs and these composition shifts are poorly understood. In a controlled germination experiment, I …
A Comparative Study Of Salt Tolerance Parameters In 11 Wild Relatives Of Arabidopsis Thaliana, Francesco Orsini, Matilde Paino D'Urzo, Gunsu Inan, Sara Serra, Dong Ha Oh, Michael V. Mickelbart, Federica Consiglio, Xia Li, Jae Cheol Jeong, Dae Jin Yun, Hans J. Bohnert, Ray A. Bressan, Albino Maggio
A Comparative Study Of Salt Tolerance Parameters In 11 Wild Relatives Of Arabidopsis Thaliana, Francesco Orsini, Matilde Paino D'Urzo, Gunsu Inan, Sara Serra, Dong Ha Oh, Michael V. Mickelbart, Federica Consiglio, Xia Li, Jae Cheol Jeong, Dae Jin Yun, Hans J. Bohnert, Ray A. Bressan, Albino Maggio
Faculty Publications
Salinity is an abiotic stress that limits both yield and the expansion of agricultural crops to new areas. In the last 20 years our basic understanding of the mechanisms underlying plant tolerance and adaptation to saline environments has greatly improved owing to active development of advanced tools in molecular, genomics, and bioinformatics analyses. However, the full potential of investigative power has not been fully exploited, because the use of halophytes as model systems in plant salt tolerance research is largely neglected. The recent introduction of halophytic Arabidopsis-Relative Model Species (ARMS) has begun to compare and relate several unique genetic resources …
Is Oxidative Stress The Cause Of Death When Recalcitrant Spartina Alterniflora Seeds Are Dried?, James Hammond Chappell
Is Oxidative Stress The Cause Of Death When Recalcitrant Spartina Alterniflora Seeds Are Dried?, James Hammond Chappell
LSU Doctoral Dissertations
Recalcitrant seeds, which die when desiccated, can be difficult to study because of their generally large size, high metabolism, and poor storage properties. However, recalcitrant seeds from the salt-marsh grass Spartina alterniflora are unique when compared to most other recalcitrant species because the seeds are dormant and small; Spartina pectinata and S. spartinae, which produce orthodox seeds, can be used as controls. Because of these somewhat rare characteristics, S. alterniflora is a good model system to study recalcitrance. In the present study, the following physiological parameters were examined: Cardinal temperatures for germination, a viability test to determine if seeds are …
Evaluating Seashore Paspalum Seed Germination And Enhancement, Erosion Abatement And Potential Use As A Vegetative Landfarm Cap, Dexter Paul Fontenot
Evaluating Seashore Paspalum Seed Germination And Enhancement, Erosion Abatement And Potential Use As A Vegetative Landfarm Cap, Dexter Paul Fontenot
LSU Master's Theses
Four temperatures were tested to determine the optimum temperature for seed germination of Paspalum vaginatum 'Seaspray' seed. Results indicated that Paspalum vaginatum germination percentage was greatest at 30°C. Three seed enhancement treatments were applied to Paspalum vaginatum seed to determine improvements in germination percentage and MTG of the seed. Potassium nitrate, GA, and soaking seed in distilled water yielded greater germination percentages than the dry control. Seeds subjected to enhancement treatments had significantly faster MTG rates than the dry control seeds. Seeds also had higher germination percentage with exposure to light when compared to seeds that germinated in conditions not …