Carbohydrate Allocation Patterns in Southern Minnesota Herbicide (Endothal) Treated Curlyleaf Pondweed (Potomogeton Crispus) Populations
Location
CSU 238
Start Date
16-4-2013 3:25 PM
End Date
16-4-2013 4:45 PM
Student's Major
Biological Sciences
Student's College
Science, Engineering and Technology
Mentor's Name
Christopher Ruhland
Mentor's Department
Biological Sciences
Mentor's College
Science, Engineering and Technology
Second Mentor's Name
Zachrie Gutknecht
Second Mentor's Department
Biological Sciences
Second Mentor's College
Science, Engineering and Technology
Description
In southern Minnesota, land management, nutrient loading, and disturbances have allowed Potamogeton crispus to establish and dominate many lentic macrophyte communities. The major advantage for P. crispus is its life cycle that produces carbohydrate storage organs known as turions, assisting growth during the winter months. Current field research on multiple lakes has observed weak and discolored turions, particularly on lakes treated with herbicide. My research is attempting to assess if endothall can effectively control P. crispus turions by decreasing carbohydrate concentrations. Since 2006, the Duck Lake association has been applying endothall in attempts to reduce P. crispus and re-establish native plant communities. Turions were randomly collected from Duck Lake and two other non-treated lakes (Ballentyne Lake and West Jefferson). I used a procedure called “Colorimetric Methods for Determination of Sugars” previously cited by Michel Dubois, K.A. Gilles, J.K. Hamilton, P.A. Rebers and Fred Smith (1955) to determine carbohydrate allocation patterns in herbicide/non-herbicide treated Potomogeton crispus turions. The procedure involves extracting sugars from weighted Potomogeton crispus turions, hydrolyzing starch to glucose and measuring glucose hydrolysate (allocated carbohydrate) of each Potomogeton crispus turion. Data of total nonstructural carbohydrate Duck Lake treated turions versus untreated turions provide a statistically significant difference (P =P. crispusturions in the endothal treated Duck Lake. My research demonstrates how current Aquathol-K treatments are affecting turion carbohydrate allocations. A larger implication of my research provides direction for macrophyte management focused on effective selective herbicide treatment.
Carbohydrate Allocation Patterns in Southern Minnesota Herbicide (Endothal) Treated Curlyleaf Pondweed (Potomogeton Crispus) Populations
CSU 238
In southern Minnesota, land management, nutrient loading, and disturbances have allowed Potamogeton crispus to establish and dominate many lentic macrophyte communities. The major advantage for P. crispus is its life cycle that produces carbohydrate storage organs known as turions, assisting growth during the winter months. Current field research on multiple lakes has observed weak and discolored turions, particularly on lakes treated with herbicide. My research is attempting to assess if endothall can effectively control P. crispus turions by decreasing carbohydrate concentrations. Since 2006, the Duck Lake association has been applying endothall in attempts to reduce P. crispus and re-establish native plant communities. Turions were randomly collected from Duck Lake and two other non-treated lakes (Ballentyne Lake and West Jefferson). I used a procedure called “Colorimetric Methods for Determination of Sugars” previously cited by Michel Dubois, K.A. Gilles, J.K. Hamilton, P.A. Rebers and Fred Smith (1955) to determine carbohydrate allocation patterns in herbicide/non-herbicide treated Potomogeton crispus turions. The procedure involves extracting sugars from weighted Potomogeton crispus turions, hydrolyzing starch to glucose and measuring glucose hydrolysate (allocated carbohydrate) of each Potomogeton crispus turion. Data of total nonstructural carbohydrate Duck Lake treated turions versus untreated turions provide a statistically significant difference (P =P. crispusturions in the endothal treated Duck Lake. My research demonstrates how current Aquathol-K treatments are affecting turion carbohydrate allocations. A larger implication of my research provides direction for macrophyte management focused on effective selective herbicide treatment.
Recommended Citation
Magnusson, Erika. "Carbohydrate Allocation Patterns in Southern Minnesota Herbicide (Endothal) Treated Curlyleaf Pondweed (Potomogeton Crispus) Populations." Undergraduate Research Symposium, Mankato, MN, April 16, 2013.
https://cornerstone.lib.mnsu.edu/urs/2013/oral-session-17/4
