topological differences between big bluestem and switchgrass
DESCRIPTION
Sara Krznarich Northern Arizona University Dr. Nancy Johnson. Topological Differences Between Big bluestem and Switchgrass. Research Question. Are there differences in the topology and mycorrhizal responses of big bluestem (Andropogon geradii ) and switchgrass ( Panicum virgatum )?. - PowerPoint PPT PresentationTRANSCRIPT
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TOPOLOGICAL DIFFERENCES BETWEEN BIG BLUESTEM AND
SWITCHGRASS
Sara KrznarichNorthern Arizona University
Dr. Nancy Johnson
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Research Question Are there differences in the topology and
mycorrhizal responses of big bluestem (Andropogon geradii) and switchgrass (Panicum virgatum)?
Photo by Wikimedia Commons
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Purpose Compare plant adaptations to obtain
nutrients
Photo by Wikimedia Commons
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Experimental Design Factorial greenhouse experiment
2 grass species: Big bluestem and Switchgrass
2 mycorrhizal fungi: Gigaspora and Glomus
Photo by Nancy Johnson
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Experimental set-up
Photo by Nancy Johnson
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Experimental set-up
0 months 4 months
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Analysis: Computer Software
WinRhizoRoot topology analysis
JMPSurface areaRoot lengthSpecific root length (length/weight)
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Analysis: WinRhizo
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Analysis: WinRhizo
Big bluestem Switchgrass
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Analysis: WinRhizo
SwitchgrassBig bluestem
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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
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Acknowledgements Dr. Nancy Johnson
Northern Arizona University Space Grant Program
Arizona Space Grant Consortium
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Any Questions?