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GEM Data Report

Access data on breeding crosses, disease evaluation, and yield trials from GEM-Ames website. See top crosses performance and CV means deviation since 2005. Thank you to companies that conducted yield trials in 2012.

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GEM Data Report

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

  2. Usage of GEM-Ames website World Map of Live Streaming Traffic Germplasm Enhancement of Maize

  3. Usage of GEM-Ames website World Map of Referrer Tracker Germplasm Enhancement of Maize

  4. GEM-Ames Data on Website • 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 Germplasm Enhancement of Maize

  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

  8. GEM-Ames trial summary - 2012 • 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%) Germplasm Enhancement of Maize

  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% (9.0-21.1% 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. 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 Special Thanks to the Companies That Conducted Yield Trial In-Kind Support (2012) Germplasm Enhancement of Maize

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