1. M. Shen USDA-ARS NCRPIS GEM - December 5, 2012 -
GEM Data Report
Germplasm Enhancement of Maize
M. Shen
USDA-ARS NCRPIS GEM
- December 5,

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

3. Usage of GEM-Ames website
World Map of Referrer Tracker
Germplasm Enhancement of Maize
People from 132 countries have visited our website

4. GEM-Ames Data on Website
Germplasm Enhancement of Maize
Corn images for GEM-Ames released lines (in PDF format):
70 images as a total (from yr 05 to 12)
Observation data of breeding crosses: year 2009 to 2011
Characterization data: year 2006 to 2011
Disease data from year 2007 to 2011
Lab NIR data and DSC data

5. GEM Disease Evaluation Data
The method of disease evaluation is upon the collector
1 ~ 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
Germplasm Enhancement of Maize

6. GEM Disease Evaluation Data
Germplasm Enhancement of Maize

7. GEM-Ames trial summary - 2012
Germplasm Enhancement of Maize
Timing of the pipeline

8. GEM-Ames trial summary - 2012
Germplasm Enhancement of Maize
Experiments: 41
Replicated at 5 to 8 locations
Plots: 13,000
The number of complete experiments lost: 1 (2.4%)
The number of experiments that have 2 or more reps lost: 4 (9.8%)
The number of total reps lost due to weather: 29 (12.3%)

9. GEM-Ames trial summary - 2012
There are 242 top crosses that out-performed the mean yield of 5 checks (10.5% of 2311 entries of the top crosses)
Of these 242 GEM top crosses, 189 were from the first year tests and 53 from the second year tests
The range of CV’s for yield was from 11.1 to 23.1% ( % last year ) and the mean of the CV’s is 15.2% (last year 13.5%)
Germplasm Enhancement of Maize

10. GEM-Ames trial summary - 2012
The deviation of CV means since year 2005
Germplasm Enhancement of Maize

11. GEM-Ames trial summary - 2012
Summary by experiment for “quick view” on page 14 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 (2012)
Germplasm Enhancement of Maize
AgReliant Genetics, LLC
BASF Plant Science Breeding LLC
Beck’s Superior Hybrids, Inc.
Dow AgroSciences
Forage Genetics
Genetic Resources, Inc.
Illinois Foundation Seeds, Inc.
Ingredion
Monsanto Company
PANNAR Seed
SEEDirect
Syngenta Seeds, Inc.
Wyffels Hybrids