Germplasm Enhancement of Maize
GEM Presentation
GEM Team
USDA-ARS NCRPIS GEM
- December 8, 2004 -
SURVEY RESULTS
Utilization of GEM Germplasm
Jim Hawk
Jim Deutsch
Duane Potrzeba
Your Employment
(Survey Responses: 84)
Private
61%
Public
33%
Individual
6%
Main Region of Your Company
Midwest United States
51%
International
29%
Southeast United States
12%
Northeast United States
5%
United States Plains
4%
Primary Field(s) of Discipline
Plant Breeding and Genetics
93%
Plant Pathology
17%
Entomology
11%
Genomics
6%
Do you use GEM germplasm in
your maize plant breeding project?
YES
73%
NO
27%
What factors limit your use of GEM
germplasm?
Late maturity
53%
Low yield
47%
Not adapted
40%
Plant and ear height
24%
Lodging
23%
Lack of stability
21%
GEM germplasm makes up what
percentage of your breeding
program?
0
24%
1-5%
38%
6-10%
14%
11-15%
5%
Over 20%
20%
Rate the importance of each trait:
Least
Moderately
Important Important
Most
Important
Yield
6%
4%
92%
Standability
4%
13%
83%
Disease Resistance
8%
37%
55%
18%
8%
15%
17%
60%
30%
48%
40%
46%
28%
54%
44%
39%
37%
14%
Grain Quality Traits
Diversity
Drought/heat tolerance
Insect Resistance
Silage Quality
Rate each disease for importance:
Least
Important
Moderately
Important
Most
Important
Gray leafspot
16%
27%
56%
Fusarium ear mold
10%
41%
50%
Stalk rot
13%
40%
48%
Northern Leaf Blight
27%
36%
37%
Ear rot
22%
44%
34%
Southern Leaf Blight
34%
34%
33%
Rate each insect for importance:
Least
Important
Moderately
Important
Most
Important
European Corn Borer
13%
30%
57%
Corn rootworm
23%
21%
56%
Corn earworm
18%
47%
36%
Fall armyworm
36%
47%
18%
Grain Quality Ratings
for importance:
Least
Important
Moderately
Important
Most
Important
Overall grain
quality/texture
Extractable starch
5%
16%
80%
27%
30%
44%
Protein
18%
41%
41%
Total starch
24%
40%
36%
Oil
20%
48%
32%
Do you plan to continue to use GEM
material in your plant breeding
program?
YES
80%
NO
20%
How do you view first cycle GEM
lines being used in your program?
Least
Important
Moderately
Important
Most
Important
Recycling to be of
commercial benefit
Source of genes for
specific traits
Basic research
8%
32%
60%
14%
32%
54%
27%
31%
42%
Commercial product
72%
24%
4%
Do you think the GEM project should
commit resources to recycling release
GEM lines, or should this function be left
to the maize industry and public
research community?
YES
50%
NO
50%
Will the diversity found within GEM
germplasm contribute to your
program in ways not addressed in
the survey questions?
YES (Broadening
Germplasm Base)
27%
NO
73%
We would like to acknowledge and
give special thanks to the GEM TSG
and Chairman Wifredo Salhuana.
Special appreciation is also extended
to Dave Bubeck, Christie Leonard,
and Karin Bennett of Pioneer Hi-Bred
International for providing the online survey.
Germplasm Enhancement of Maize
GEM Presentation
The End