Sara Krznarich Northern Arizona University Dr. Nancy Johnson.
-
Upload
joy-diane-edwards -
Category
Documents
-
view
214 -
download
1
Transcript of Sara Krznarich Northern Arizona University Dr. Nancy Johnson.
![Page 1: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/1.jpg)
TOPOLOGICAL DIFFERENCES BETWEEN BIG BLUESTEM AND
SWITCHGRASS
Sara Krznarich
Northern Arizona University
Dr. Nancy Johnson
![Page 2: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/2.jpg)
![Page 3: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/3.jpg)
![Page 4: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/4.jpg)
![Page 5: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/5.jpg)
Research Question Are there differences in the topology and
mycorrhizal responses of big bluestem (Andropogon geradii) and switchgrass (Panicum virgatum)?
Photo by Wikimedia Commons
![Page 6: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/6.jpg)
Purpose
Compare plant adaptations to obtain nutrients
Photo by Wikimedia Commons
![Page 7: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/7.jpg)
Experimental Design
Factorial greenhouse experiment2 grass species: Big bluestem and
Switchgrass2 mycorrhizal fungi: Gigaspora and Glomus
Photo by Nancy Johnson
![Page 8: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/8.jpg)
Experimental set-up
Photo by Nancy Johnson
![Page 9: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/9.jpg)
Experimental set-up
0 months 4 months
![Page 10: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/10.jpg)
Analysis: Computer Software
WinRhizoRoot topology analysis
JMPSurface areaRoot lengthSpecific root length (length/weight)
![Page 11: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/11.jpg)
Analysis: WinRhizo
![Page 12: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/12.jpg)
Analysis: WinRhizo
Big bluestem Switchgrass
![Page 13: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/13.jpg)
Analysis: WinRhizo
SwitchgrassBig bluestem
![Page 14: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/14.jpg)
Conclusion
Mycorrhizal treatment: unsuccessful
Surface area: not significantly different
Total root length and specific root length differed significantlyBig bluestem > Switchgrass
Different strategies for nutrient uptake
![Page 15: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/15.jpg)
Acknowledgements
Dr. Nancy Johnson
Northern Arizona University Space Grant Program
Arizona Space Grant Consortium
![Page 16: Sara Krznarich Northern Arizona University Dr. Nancy Johnson.](https://reader035.fdocuments.in/reader035/viewer/2022062722/56649f385503460f94c54ede/html5/thumbnails/16.jpg)
Any Questions?