estimating wheat root biomass using ground penetrating radar
TRANSCRIPT
Estimating wheat root biomass using ground penetrating radar
CIMMYT Remote Sensing - Beyond Images December 14-15, 2013
Sean M. Thompson, Alfredo Delgado, R. Esten Mason, C. Mariano Cossani, Matthew P. Reynolds, Amir M. H. Ibrahim, Ronald E. Lacey, Robert A. Washington-Allen, and Dirk B. Hays
© Sean M. Thompson 2013 - All Rights Reserved
Phenotyping roots
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0-30 cm
30-60 cm
60-90 cm
90-120 cm
© Sean M. Thompson 2013 - All Rights Reserved
Hypothesis
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GPR is capable of phenotyping root biomass of wheat in situ. Objectives Develop the use of GPR for phenotyping below ground biomass, in the context of higher yield stability during drought and high temperature stress.
• The validation of GPR to non-destructively detect wheat roots in a controlled and stressed environment for correlation to traditional destructive root measurements.
© Sean M. Thompson 2013 - All Rights Reserved
4 Tw
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ay tr
avel
tim
e (n
anos
econ
ds)
00 – 02 – 04 – 06 – 08 – 10 – 12 –
Antenna Antenna
Soil Sci. Soc. Am. J. 67:1607–1615 (2003)
© Sean M. Thompson 2013 - All Rights Reserved
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Plot width
0-30 cm
30-60 cm
60-90 cm
90-120 cm
Antenna Antenna Antenna
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March 20, 2013 Pre-Waterlogging
April 8, 2013 (19) Waterlogging
April 16, 2013 (27) Waterlogging
(Images: R. Esten Mason)
Waterlogging treatment Control treatment
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GPR-Slice
Geophysical Archaeometry
Laboratory
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Spatial analysis
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Time slices
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Conclusions
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• Spatial relationship between plots and GPR amplitude return in both control and treatment.
• In field spatial variability will need to be considered in future GPR studies.
• Root biomass and depth can be visualized by GPR .
© Sean M. Thompson 2013 - All Rights Reserved
Looking forward
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• CIMMYT – Deeply rooted partnership
• IDS Multi Array System
– Root Depth / Biomass – Root Architecture – Field-Based HTP
• GPR-Slice
– Rapid Data Analysis – User Friendly Interface – In Field Data Processing
isdcorporation.com
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isdcorporation.com
© Sean M. Thompson 2013 - All Rights Reserved
Support
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United States Department of Agriculture U.S. Borlaug Fellows in Global Food Security Purdue University, Center for Global Food Security
Texas Wheat Producers Board Wheat Physiological Breeding Texas A&M University, Small Grains Breeding Program
International Maize and Wheat Improvement Center Global Wheat Program, Wheat Physiology Consultative Group on International Agricultural Research
Texas A&M AgriLife Research Texas Cropping System Grant Texas A&M University, Soil & Crop Sciences
© Sean M. Thompson 2013 - All Rights Reserved
Team members Texas A&M AgriLife • Wheat Physiology, Small Grains Breeding • Small Grains Extension
University of Arkansas • Small Grains Breeding
CIMMYT • Physiology • Breeding • Biostatistics
14 © Sean M. Thompson 2013 - All Rights Reserved
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Sean M. Thompson
[email protected] | precision-phenotyping.com
Alfredo Delgado
[email protected]| soilcrop.tamu.edu
“Do not only practice your art, but force your way into
secrets, for it and knowledge can raise man to the
divine.” -Beethoven
© Sean M. Thompson 2013 - All Rights Reserved