1. M. Shen USDA-ARS NCRPIS GEM - December 7, 2011 -
GEM Yield Test Report
Germplasm Enhancement of Maize
M. Shen
USDA-ARS NCRPIS GEM
- December 7,

2. Usage of GEM-Ames website
World Map of Cumulative Traffic
Germplasm Enhancement of Maize
People from 132 countries have visited our website

3. GEM-Ames Data on Website
Corn images for GEM-Ames released lines (in PDF format):
64 images as a total (from yr 05 to 11)
Disease data from year 2007 to 2011
Data of observations of breeding crosses (from year 2009 to 2011)
More data will be included from international cooperators
Characterization data (from yr 2006 to 2011)
Lab NIR data and DSC data
Germplasm Enhancement of Maize

4. Usage of GEM-Ames website
The data page on GEM website
Germplasm Enhancement of Maize

5. GEM-Ames trial summary - 2011
Germplasm Enhancement of Maize
Experiments: 51
Replicated at 5 to 8 locations
Plots: 17,000
The number of complete experiments lost: 1 (2.0%)
The number of experiments that have 2 or more reps lost: 8 (15.7%)
The number of total reps lost due to weather: 41 (14.3%)

6. GEM-Ames trial summary - 2011
There are 251 top crosses that out-performed the mean yield of 5 checks (8.3% of 3028 entries of the top crosses)
Of these 251 GEM top crosses, 226 were from the first year tests and 25 from the second year tests
The range of CV’s for yield was from 9.0 to 21.1% ( % last year ) and the mean of the CV’s is 13.5% (last year 12.8%)
Germplasm Enhancement of Maize

7. GEM-Ames trial summary - 2011
Total Numbers of Yield Trial Experiments Each Year
Germplasm Enhancement of Maize

8. GEM-Ames trial summary - 2011
Germplasm Enhancement of Maize
Timing of the pipeline

9. GEM-Ames trial summary - 2011
The deviation of CV means since year 2005
Germplasm Enhancement of Maize

10. GEM-Ames trial summary - 2011
The number of lost reps each year since year 1999
Germplasm Enhancement of Maize

11. GEM-Ames trial summary - 2011
Summary by experiment for “quick view” on page 18 and 19 of the yield trial section
Germplasm Enhancement of Maize

12. Germplasm Enhancement of Maize
Special Thanks to the Companies That Conducted Yield Trial In-Kind Support (2011)
Germplasm Enhancement of Maize
AgReliant Genetics, LLC
BASF Plant Science Breeding LLC
Beck’s Superior Hybrids, Inc.
Forage Genetics
Genetic Resources, Inc.
Illinois Foundation Seeds, Inc.
Monsanto Company
Dow AgroSciences
National Starch & Chemical
PANNAR Seed
SEEDirect
Syngenta Seeds, Inc.
Wyffels Hybrids