50%-Tropical GEM Program at NC State

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50-Tropical GEM Program at NC State
Scope of program 2004 Results
Major Goodman, Joe Hudyncia, and Mike Jines
Department of Crop Science and USDA/ARS
N. C. State University
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Standard Plots Grown by 15 cooperators 9,200 (11
company locations, 2 other universities, 2
USDA-ARS sites) Standard Plots Grown by NC
State (5 locations)
6,342 Additional GEM Plots at NC State (tester,
CML-type line, GEM inbred development, and
breeding cross evaluations)
6,712 TOTAL NC YIELD TRIAL PLOTS 22,234
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Seeds of the following families are available for
distribution now. Complete lists of all families
in these trials are available for the cost of an
e-mail. (maize_resources_at_ncsu.edu
or major_at_nc.rr.com).
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DK212T N11 F2S2 x FR992.FR1064
(EX87) 3315-003/00 175.4 19.5
86.3 3320-005/00 167.7 18.8 91.8 Check
mean 179.2 18.6 91.1 DK697
183.3 19.7 89.8 DK743 173.5 21.1
90.1 HC33.TR7322 155.3 16.6
94.5 LH200.LH262 179.9 19.3 85.8 P31G98
199.1 18.4 89.6 P32K61 174.6
17.9 95.5 23 Env. CV 10.9 5.2 15.5

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DK888 N11 F1S2s x FR992.FR1064
(EX89) 3607-034/00 165.0 19.4
85.1 3620-028/00 162.1 18.5 86.4 Check
mean 171.8 18.4 87.9 DK687
167.3 18.5 89.5 DK697 178.7 19.8
84.6 DK743 171.5 20.4
81.6 FR1064.LH185 154.7 17.7
87.3 LH200.LH262 164.7 18.8 84.5 P31G98
194.3 18.2 87.8 P32K61 172.4
18.1 93.2 24 Env. CV 10.2 6.6 12.1
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DKXL380 N11 F2S3 x FR992.FR1064 (EXG2) ENTRY
YIELD MOIS. EP B9527-01/97 168.7
19.3 88.1 Check mean 170.8 18.8
89.6 DK697 176.9 19.4 89.8 G8288
177.2 19.9 88.1 HC33.TR7322 144.3
16.6 90.5 LH200.LH262 168.7 19.3
89.0 P31G98 187.6 18.8 90.4 19 Env.
CV 11.2 8.1 13.8
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The following data have many fewer test
environments, but are for a 2nd tester. Seed
available now (maize_resources_at_ncsu.edu or
major_at_nc.rr.com).
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DKXL380 N11 F2S2 x FR992.1064 (EX01)
ENTRY YIELD MOIS. EP
2423-011/99 143.0 19.9 92.3 2423-017/99 145.2
19.2 94.4 Check means 141.3 19.3 92.1
DK687 147.3 19.1 93.9
DK697 152.7 19.4 90.8 LH132.LH51
131.5 18.2 90.8 LH200.LH262 151.5
19.4 93.5 P3165 123.3 20.9 88.0
P32K61 143.4 18.5 95.7
9 Env. CV 12.9 7.2 10.5
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The remaining data are for 2nd year trials from
2004. Seeds have not yet been increased and will
not be available until Fall of 2005.
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DK888 S11 F2S4s x FR615.FR697 (EXF2) 4018-001/00
165.7 21.3 81.4 Check mean 175.4
19.1 85.4 DK697 185.6 19.7
82.7 G8288 177.4 19.6
85.4 LH200.LH262 163.6 19.5 80.7 NK91-R9
178.0 21.3 88.0 P31G98 187.2
18.3 89.9 P32D99 197.1 20.4
82.6 P32K61 167.6 18.3 89.8 P32R25
167.2 18.4 82.8 21 Env. CV 13.1
7.8 14.8
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DK N11 F2S3s x FR992.FR1064 (EXG4) 3439-001/00
163.7 20.4 76.9 DK888 3483-005/00 162.5
20.9 79.3 XL380 Check mean 170.3 19.3
85.5 DK697 180.3 19.9 85.0 G8288
170.1 19.6 84.4 LH200.LH262 161.7 19.3
81.1 NK91-R9 173.4 21.2 87.2 P31G98
181.5 19.0 89.0 P32D99 187.5 20.5
83.1 P32K61 163.0 18.3 89.0 19 Env. CV
11.3 6.7 13.4
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Breeding-Cross Choices In 2003 and 2004, we grew
many 50- tropical Breeding Crosses in per-se
yield trials. Results were startling Yield
ranges were wide, many yields were extremely
low. Conclusions Many Breeding Crosses should
be junked, new crosses made or goals adjusted.
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Some performed well 1. PE11S11a (BR51501)
These were 2. CL-00331N18
generally within 3. FS8B(S)S03
10 of the checks. 4. BR105S16
5. DKB830S19
6. FS8B(T)N11a
7. RN07S20 (BR51721)
8. SE32N11c (BR52051)
9. PASCO14S11a
10. GUAT209N11c
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Others performed abysmally 1. CML325N13
2. CHIS462N08a
These ranged from 3.
CML247N17a about 1/3 to 1/2 of 4.
CML247N18 check yields.
5. CUBA117S15
6. CML247N17b 7.
SANM126S12 8.
DK888S08a 9.
FS8B(S)S17b 10.
DKXL370S08a
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Yield trials of CML, KUI, and TZI lines, first
with a LH132.LH51 screen, followed by SS and
NSS testers, suggests the following lines as good
GEM candidates CML258 CML91 CML327 TZI9 C
ML10 TZI8 CML269 CML341 CML373 KUI43
was CML343 CML157Q best Ki CML277 CML108 l
ine tested.