| CIMMYT's eastern Africa product pipeline 1B (EA-PP1B) focuses on developing high-yielding, early maturing maize varieties with white grain, drought tolerance, NUE, and resistance to GLS, TLB, MSV, and ear rots, that are suitable for food use in tropical, rainfed, dry, mid-altitude areas in eastern Africa and similar agroecologies. |
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General Information |
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Adaptation/Agroecological zone |
1000 - 1600 masl |
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Type of product |
Three-way cross hybrid |
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Year first announced |
2019 |
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Grain Characteristics |
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Grain color |
White |
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Grain texture |
Dent |
| Grain Yield |
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| Grain yield under optimum conditions |
7.8 t/ha |
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Biotic Stress Performance |
| Grain yield under high density |
7.8 t/ha |
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Turcicum leaf blight (TLB) (1-9) |
3.6 |
| Grain yield under drought stress |
6.4 t/ha |
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Grey leaf spot (GLS) (1-9) |
1.8 |
| Grain yield under low N stress |
4.2 t/ha |
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Common Rust (1-9) |
1.6 |
| Grain yield under MLN art. inoc. |
0.3 t/ha |
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FAW leaf damage (1-9) |
5.3 |
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FAW cob damage (1-9) |
2.8 |
| Agronomic Characteristics |
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Grain weight loss (MW) |
0.2% |
| Maturity |
136 DAP |
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Grain weight loss (LGB) |
0.2% |
| Plant height |
222.5 cm |
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Ear rots |
3.5% |
| Ear height |
98.7 cm |
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Diseases were originally scored on a 1-5 scale but have been converted here to a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
| Bad husk cover |
6.7% |
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| Root lodging |
0.9% |
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| Stalk lodging |
1.0% |
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Seed Production Characteristics |
| Anther-silking interval |
1 day |
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Female seed yield |
6.0 t/ha |
| Ear aspect (1-5) |
2.4 |
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Male seed yield |
2.7 t/ha |
| Plant aspect (1-5) |
2.3 |
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Nicking |
1 day |
| Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics |
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Comments |
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Product information is based on data from various trials conducted by CIMMYT in eastern Africa in 2019.
Abbreviations:
art. inoc. = artificial inoculation
DAP = days after planting
FAW = Fall armyworm
GLS = Grey Leaf Spot
HD = High Density (80,000 plants per ha)
Low N = Managed Low Nitrogen
masl = meters above sea level
MD = Managed drought
MSV = maize streak virus
NUE = Nitrogen Use Efficient
Opt = Optimum Management
TLB = Turcicum Leaf Blight |
| Further Links |
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| Full Announcement |
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| Trial Data Summary |
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| Regional Trial Site Information |
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