Germplasm Enhancement of Maize
GEM IT Report and
Yield Test Results
M. Shen
USDA-ARS NCRPIS GEM
- December 10, 2008 -
Germplasm Enhancement of Maize
GEM-Ames Website
Updated GEM cooperator’s list, GEM
reports, presentations, and GEM data
Added a section of Corn Images of
Recommended Lines (in PDF format)
43 images as a total
Year 2005, 2006, 2007, and 2008
Germplasm Enhancement of Maize
Corn Images of Recommended Lines
Germplasm Enhancement of Maize
Usage of GEM-Ames website
(Dec. 07 to Nov. 08)
Usage: germplasm information, GEM data, and
information about GEM project, etc.
Search engine: Google 16 – 39% each month
Key words: germplasm gem maize
Visitors: 187/month (up from 180/m last year)
Re-visitors: 40% (up from 36% last year)
Top 10 countries with most visitors (in descending
order):
US, China, India, Canada, Italy, UK, Mexico, France, Germany, & Ireland
Top 10 states/regions with most visitors (in descending
order):
IA, CA, NC, MO, IL, Beijing (China), NY, IN, TX, & MI
Germplasm Enhancement of Maize
Usage of GEM-Ames website
World Map of Cumulative Traffic
Germplasm Enhancement of Maize
GEM-Ames Information Management
Handout: GEM 2008 yield trial summary
GEM CD contains
Germplasm releases and key traits
Public cooperators’ reports
Yield trial data
Corn images of GEM recommended lines
Disease data from cooperators
Lab data reports
Annual report
GEM information –
www.public.iastate.edu/~usda-gem
Germplasm Enhancement of Maize
GEM-Ames trial summary - 2008
The date of the first data set received
1 month later than that last year (Oct. 20)
The date of the last data set received
2 weeks later than that last year (Dec. 2)
Thanks to the companies who sent the data
before requesting
AgReliant, Wyffels, and Monsanto
Germplasm Enhancement of Maize
GEM-Ames trial summary - 2008
Experiments: 56 (up from 48 last year –
due to more racial sampling capacity
and isolation in-kind support)
Replicated at 4 to 8 locations
Plots: 17,000 (up from 14,800 last year)
GEM cooperators’ portion: 49% (down
from 57% last year)
GEM portion: 51% (up from 43% last
year)
Germplasm Enhancement of Maize
GEM-Ames trial summary - 2008
There are 104 GEM topcrosses that outperformed the yield of check means (out of
2682 entries of topcrosses)
The range of CV’s for yield was from 6.7 to
18.0%
Yield trial data - high lodging data this year
(good selection for lodging resistant?)
Germplasm Enhancement of Maize
GEM-Ames year trial summary
1st yr
trial
No. entries beat all checks
7
No. entries beat check means
98
No. entries beat at least 1 check 687
Total entries: 2682
2nd yr
trial
0
6
197
Total
7
104
884
Total Numbers of Yield Trial Experiments Each Year
60
50
40
# Expt
Germplasm Enhancement of Maize
GEM-Ames trial summary - 2008
30
20
10
0
96
97
98
99
00
01
Year
02
03
04
05
06
07
08
Germplasm Enhancement of Maize
GEM-Ames trial summary - 2008
Total Numbers of GEM Yield Trial Plots
18000
16000
14000
12000
10000
8000
6000
4000
2000
0
Coops
Total plots
I96
I97
I98
I99
I00
Total plots
I01
GEM
I02
I03
Coops
I04
I05
I06
I07
I08
Germplasm Enhancement of Maize
Special Thanks to the Companies That
Conducted Yield Trial In-Kind Support (2008)
AgReliant Genetics, LLC
BASF Plant Science Breeding LLC
Beck’s Superior Hybrids, Inc.
Benson Seed Research, LLC
Brodbeck Seeds
Hoegemeyer Hybrids, Inc.
Hyland Seeds
Illinois Foundation Seeds, Inc.
Monsanto Company
Mycogen Seeds
National Starch
PANNAR Seed
Schillinger Seeds
SEEDirect
Syngenta Seeds, Inc.
Wyffels Hybrids
Germplasm Enhancement of Maize
Special Thanks to the Companies That
Conducted Nursery In-Kind Support (2008)
Nursery (selection and generation advance):
AgReliant, APEX-AGRI, BASF, Beck’s, Brodbeck, GDU,
Genetic Enterprises Int’l, Hoegemeyer, Hyland, IFSI,
Monsanto, Mycogen, National Starch, PANNAR, PRIME
Farm Seed, Schillinger, Semillas Tuniche, Syngenta,
Targeted Growth, Terrell Seed, and Wyffels
Isolation blocks:
AgReliant, Beck’s, MBS, Monsanto, and Mycogen
Germplasm Enhancement of Maize
Special Thanks to the Companies That
Conducted Other In-Kind Support (2008)
Making new breeding crosses:
AgReliant, Brand Wine Seed Farm, Chinese Academy of
Agricultural Science, G&S Crop Services, Hoegemeyer, Hyland,
JFS & Associates, Monsanto, Mycogen, Nugemplasm, PANNAR,
and Prosemillas
BC observations/evaluation:
AgReliant, APEX-Agri, Chinese Academy of Agricultural Science,
G&S Crop Services, Mycogen, Nugemplasm, Prosemillas, and
Seed Asia
Conversions (waxy):
National Starch
Disease and/or insect screening:
3rd Millennium Genetics, Chinese Academy of Agricultural
Science, Pioneer, Professional Seed Research, and Seed Asia
Allelic diversity nursery (summer and winter):
Pioneer and Syngenta
Germplasm Enhancement of Maize
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