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GEM Data Report
M. ShenUSDA-ARS NCRPIS GEM
- December 11, 2013 -
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Usage of GEM-Ames website
World Map of Cumulative Visitors
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Usage of GEM-Ames website
Top 10 countries with the most visitors
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Usage of GEM-Ames website
Top 10 regions with the most visitors
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GEM-Ames Data on Website
70 Corn images for GEM-Ames released lines (in PDF format):
Observation data of breeding crosses: year 2009 to 2012
Characterization data: year 2006 to 2012
Disease data from year 2007 to 2012
Lab NIR data and DSC data
GEM yield trial data: year 1999 to 2013
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GEM Disease Evaluation Data
The method of disease evaluation is upon the collector1 ~ 5 scale
1 ~ 9 scale
1 ~ 7 scale
It was proposed to use one GEM rating scale to facilitate comparisons and has been approved by the TSG in September 2012.
GEM disease evaluation scale:1 ~ 9 (1 = resistant and 9 = susceptible)
All the disease evaluation data contain both the original scale and GEM scale
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GEM Disease Evaluation Data
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GEM-Ames trial summary - 2013
Experiments: 40
Replicated at 4 to 8 locations
Plots: over 10,000
The number of total reps lost due to weather: 9 (4.0%)
The number of experiments that have 2 or more reps lost: 3 (1.3%)
No experiment was lost because of weather
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GEM-Ames trial summary - 2013
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 20130
5
10
15
20
25
30
35
40
45
The Number of Plots Lost Each Year
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GEM-Ames trial summary - 2013
There are 261 top crosses that out-performed the mean yield of 5 checks (14.2% of 1839 entries of the top crosses)
Of these 261 GEM top crosses, 186 were from the first year tests and 75 from the second year tests
The range of CV’s for yield is from 8.3 to 18.2% (11.1-23.1% last year ) and the mean of the CV’s is 12.4% (last year 15.2%)
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GEM-Ames trial summary - 2013
The deviation of CV means of yield since year 2005
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
2.50
3.00
(CV of each year – CV mean)
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GEM-Ames trial summary - 2013
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
The Percentage of plots by GEM & COOPs
GEM COOP
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GEM-Ames trial summary - 2013
Summary by experiment for “quick view” on page 33 of the yield trial section
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ze Special Thanks to the Companies That Conducted Yield Trial In-Kind Support (2013)
AgReliant Genetics, LLC
BASF Plant Science Breeding LLC
Beck’s Superior Hybrids, Inc.
Dow AgroSciences
Forage Genetics
Illinois Foundation Seeds, Inc.
Ingredion
Monsanto Company
PANNAR Seed
SEEDirect
Syngenta Seeds, Inc.
Wyffels Hybrids
