Welcome to the
Germplasm Enhancement of Maize
1998 Field Day!
1:30 pm: INTRODUCTIONS

Welcome from University and the
College of Agriculture ...
Dean David Topel of the Iowa
State University College of
Agriculture.




Welcome from the United
States Department of
Agriculture, Agricultural
Research Service, Corn Insects
and Crop Genetics Research
Unit …
Dr. Leslie Lewis, Research Leader
of CICGRU, USDA-ARS.
Welcome from the GEM Technical
Steering Group ...
Dr. Wilfredo Salhuana,
Chairman.
Introduction of the GEM
Technical Steering Committee
Members...
Dr. David Harper, Holden
Foundation Seeds, Committee
Member.
Introducing Public Cooperators
at Iowa State University ...
Dr. Gary Munkvold, Iowa State
University, Department of Plant
Pathology;
Dr. Paul Scott, USDA-ARS
Research Geneticist;
Dr. Jerry Sell, Iowa State
University, Department of Animal
Science.
Dr. Pamela White, Iowa State
University, Department of Food
Science and Human Nutrition.
GEM by the Numbers:
2 – The number of post-doctoral
candidates currently employed by
GEM.
4 – The number of full-time
personnel employed by the GEM
Project.
42, 56, & 30 – The number of
requests for GEM materials in
1996, 1997 and 1998.
58 – The number of accessions that
are being used by GEM and its
cooperators to help produce food
for the future.
319 – The number of breeding
crosses available from GEM.
653,625 – The number of kernels
dispensed to cooperators since
1996.
Wednesday, September 23, 1998
Uthe Farm Slater, Iowa
USDA ARS GEM
Field Day 1998
Please Visit These Entries in Range 1
with Exceptional Value Added Traits.
Entry 29:
Superior Starch Quality
Peak Onset of
Gelatinization
Commercial Hybrids
64.9C
CUBA164: S2008a Derived Line
62.9C
Reduced onset of gelatinization temperature means less energy is used to the
cook the starch. This is important for microwave cooking.
Entry 31:
Superior Starch Quality
Entry 33:
Superior Starch Quality
Energy Needed
To Gel Starch
Commercial Hybrids
3.0cal/g
CHIS775: S1911b Derived Line
2.3cal/g
The lower value means less energy is required in the starch cooking process.
Range of
Gelatinization
Commercial Hybrids
10.9C
DK212T: S0610 Derived Line
4.2C
Narrow range of starch gelatinization means starch cooking can occur
completely and quickly over a brief range.
Entry 35:
Superior Oil Quality
Stearic Acid
Content
Commercial Hybrids
1.6%
DKB830: S11a17
2.8%
Oils with increased Stearic acid have improved consistency, stability and health
implications.
* visit
our homepage at www.public.iastate.edu/~usda-gem
2
USDA ARS GEM
Entry 37:
Field Day 1998
Superior Starch Quality
Starch
Retrogradation
Commercial Hybrids
45%
CUBA164: S1511b Derived Line
87%
This high value may indicate the presence of a resistant starch. Resistant starch
may be a new source of dietary fiber, industrial lubricants or dusting powders.
Entries 39 & 45:
Superior Grain Quality
Protein Oil
Commercial Hybrids
11.4% 3.3%
DREP150:N2011d Derived Line (Entry 39)
15.3% 5.0%
AR16021:S08a02 Derived Line (Entry 45)
15.6% 5.6%
Energy-dense products can increase animal performance and/or reduce feed
costs by improving palatability, reducing dust and improving milling
efficiency.
Entry 41:
Superior Oil Quality
Linolenic Acid
Content
Commercial Hybrids
1.7%
Ar16026:S1704 Derived Line
1.1%
Corn oil with reduced linolenic acid is more stable with a longer shelf life.
Entry 43:
Superior Oil Quality
Oleic Acid
Content
Commercial Hybrids
26.5%
AR17026:N1019 Derived Line
46.5%
Oils high in oleic acid are more heart healthy. Replacing saturated fatty acids
with oleic acid in diets has improved blood lipid profiles.
* visit
our homepage at www.public.iastate.edu/~usda-gem
3
USDA ARS GEM
Field Day 1998
GEM MINI-NURSERY BOOK
GERMPLASM ENHANCEMENT OF MAIZE
Central Iowa Field Day
DEMONSTRATION PLOT MAP
N
ENTRY NUMBERS RUN SERPENTINE
201
300
RANGE 3
New Breeding Crosses from GEM
(4 ROW PLOTS)
200
101
RANGE 2
Public Cooperators Recommendations
(4 ROW PLOTS)
1
100
RANGE 1
Breeder’s Demonstration & Value Added Traits
(2ROW PLOTS)
Field History:
Fertilizer:
1997 Soybean. Corn planting date, May 17.
180 lbs. of actual N-32% before planting.
80 lbs. of actual N-32% applied June 30.
Herbicide:
30 oz / ac Frontier applied with 32% and then incorporated.
48 oz / ac Marksman post application
CODE ABBREVIATIONS
* visit
our homepage at www.public.iastate.edu/~usda-gem
4
USDA ARS GEM
ACC
CB
Cm H
M
Pb H
Pb I
25%
50%
TOP
Field Day 1998
ACCESSION FROM PLANT INTRODUCTION STATION
CORN BELT GERMPLASM
COMMERCIAL HYBRID
MARKER ROWS
PUBLIC LINE HYBRID
PUBLIC INBRED
25% EXOTIC GERMPLASM / PROPRIETARY BREEDING CROSS
50% EXOTIC GERMPLASM / PROPRIETARY BREEDING CROSS
TOPCROSS
RANG E 1 - BREEDING PRO G RESS DEMO NSTRATIO N
ENTRY #
1
2
3
4
5
M
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
M
PEDIGREE
REID YELLOW DENT
ORIGINAL STIFF STALK SYNTHETIC
B73
B73/Mo17
COMMERCIAL HYBRID
PURPLE HYBRID
AR17026
AR17026:N10
TOPCROSS USING AR17026:N10
AR17026:N1013
TOPCROSS USING AR17026:N1013
AR17026:N1019
TOPCROSS USING AR17026:N1019
CH05015
CH05015:N15
TOPCROSS USING CH05015:N15
CH05015:N1507
TOPCROSS USING CH05015:N1507
CH05015:N1502
TOPCROSS USING CH05015:N1502
CH05015
CH05015:N12
TOPCROSS USING CH05015:N12
CH05015:N1206
TOPCROSS USING CH05015:N1206
CH05015:N1219
TOPCROSS USING CH05015:N1219
CH05015:N1204
TOPCROSS USING CH05015:N1204
END OF BREEDER’S DEMO PURPLE HYBRID
* visit
CODE
CB
CB
Pb I
Pb H
Cm H
M
ACC
50%
TOP
25%
TOP
25%
TOP
ACC
50%
TOP
25%
TOP
25%
TOP
ACC
50%
TOP
25%
TOP
25%
TOP
25%
TOP
M
BREEDER’S NOTES
BREEDER DEMO
BREEDER DEMO
BREEDER DEMO
BREEDER DEMO
BREEDER DEMO
MARKER ROWS
MARKER ROWS
our homepage at www.public.iastate.edu/~usda-gem
5
USDA ARS GEM
Field Day 1998
RANG E 1 - VALUE ADDED TRAITS
ENTRY #
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
M
ENTRY #
M
47
48
49
50
M
51
M
52
53
M
54
55
M
56
57
58
59
PEDIGREE
CUBA164:S2008a
TOPCROSS USING CUBA164:S2008a
CHIS775:S1911b
TOPCROSS USING CHIS775:N1920
DK212T:S0610
TOPCROSS USING DK212T:N11a10
DKB830:S11a17
TOPCROSS USING DKB830:N11b
CUBA164:S1511b
TOPCROSS USING CUBA164:S15
DREP150:N2011d
CODE
VAC
TOP
VAC
TOP
VAC
TOP
VAC
TOP
VAC
TOP
VAC
BREEDER’S NOTES
Superior Starch Quality
Great Yield Potential
Superior Starch Quality
Great Yield Potential
Superior Starch Quality
Great Yield Potential
Superior Oil Quality
Good Yield Potential
Superior Starch Quality
Great Yield Potential
Superior Grain Quality
Great Yield Potential
TOPCROSS USING DREP150:N2011d
TOP
Superior Oil Quality
AR16026:S1704
VAC
Good Yield Potential
TOPCROSS USING AR16026:N12
TOP
Superior Oil Quality
AR17026:N1019
VAC
Good Yield Potential
TOPCROSS USING AR17026:N1019
TOP
Superior Grain Quality
AR16021:S08a02
VAC
Good Yield Potential
TOPCROSS USING AR16021:S08b06
TOP
MARKER ROWS
END OF RANGE 1- PURPLE HYBRID
M
RANG E 2 - PUBLIC CO O PERATO RS RECO MMENDATIO NS
PEDIGREE
BEGINNING OF RANGE 2- PURPLE HYBRID
BR52051:S17
BR52060:S02
CUBA117:S15
CUBA173:S04
PURPLE HYBRID
DK888:N11a08
PURPLE HYBRID
AR16021:S09
UR05071:S04
PURPLE HYBRID
CHIS775:S1916
CUBA164:S1517
PURPLE HYBRID
FS8B(T):N1802
CH04030:S0906
AR01150:N0406
GOQUEEN:N1603
CODE
M
50%
50%
50%
50%
M
25%
M
50%
50%
M
25%
25%
M
25%
25%
25%
25%
BREEDER’S NOTES
MARKER ROWS
MARKER ROW
GLS RESISTANT
MARKER ROW
EAR ROT RESISTANT
EAR ROT RESISTANT
MARKER ROW
MARKER ROW
RANG E 2 - PUBLIC CO O PERATO RS RECO MMENDATIO NS
* visit
our homepage at www.public.iastate.edu/~usda-gem
6
USDA ARS GEM
ENTRY #
M
60
61
M
62
63
64
65
66
67
M
PEDIGREE
PURPLE HYBRID
DKXL212:N11a
BR51501:N11a12
PURPLE HYBRID
AR17026:N1019
AR17026:N1013
UR13085:N0204
UR13085:N0207
UR10001:N17
UR13085:N02
END OF RANGE 2 PURPLE HYBRIDS
Field Day 1998
CODE
M
50%
25%
M
25%
25%
25%
25%
50%
50%
M
BREEDER’S NOTES
MARKER ROW
MARKER ROW
SILAGE POTENTIAL
SILAGE POTENTIAL
SILAGE POTENTIAL
SILAGE POTENTIAL
SILAGE POTENTIAL
SILAGE POTENTIAL
MARKER ROWS
RANG E 3 - NEW BREEDING CRO SSES
ENTRY #
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
M
PEDIGREE
GUAT209:N1925
AR03056:N1625
PLANTER ERROR
PLANTER ERROR
DKB844:S11b
AR17056:N2025
AR01150:S0125
UR01089:N2225
UR01089:S0525
ANTIG01:S0225
UR01089:S24
AR17056:N2025
AR01150:S0125
UR01089:N2225
UR01089:S0525
ANTIG01:S0225
GUAT209:N1925
AR03056:N1625
CML-323:N15
CML-329:N15
CL-G1501:N15
CL-G1703:N15
CML-287:S15
CML-325:S11
END OF RANGE 3 PURPLE HYBRIDS
CODE
25%
25%
25%
25%
25%
25%
25%
25%
50%
25%
25%
25%
25%
25%
25%
25%
50%
50%
50%
50%
50%
50%
M
Country of Origin
GUATEMALA
ARGENTINA
BRAZIL
ARGENTINA
ARGENTINA
URUGUAY
URUGUAY
CHILE
URUGUAY
ARGENTINA
ARGENTINA
URUGUAY
URUGUAY
MEXICO
GUATEMALA
ARGENTINA
Subtropical CIMMYT
Subtropical CIMMYT
Tropical CIMMYT
Tropical CIMMYT
Tropical CIMMYT
Subtropical CIMMYT
MARKER ROWS
NOTES:
* visit
our homepage at www.public.iastate.edu/~usda-gem
7