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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 …
Molecular Diversity And Coat Protein Expression Of Sweet Potato Leaf Curl Virus, Dina Lida Gutierrez Reynoso
Molecular Diversity And Coat Protein Expression Of Sweet Potato Leaf Curl Virus, Dina Lida Gutierrez Reynoso
LSU Doctoral Dissertations
Leaf curl virus diseases have been reported in sweetpotato throughout the world. One of the causal agents is Sweet potato leaf curl virus (SPLCV) which belongs to the genus Begomovirus (family Geminiviridae). In the United States, SPLCV has been found infecting an ornamental sweetpotato and several breeding lines but not in sweetpotatoes grown for commercial production. SPLCV does not cause symptoms on Beauregard, the predominant sweetpotato cultivar in the US, but it can reduce its yield. Since SPLCV could become an important constraint for sweetpotato production; diagnosis, identification, and characterization are essential steps to develop an effective management program. The …