| CIMMYT's eastern Africa product profile 2 (EA-PP2) focuses on developing high-yielding, late-maturing maize varieties with white grain, drought tolerance, NUE, and resistance to GLS, TLB, MSV, ear rots, and common rust, that are suitable for food use in tropical, rainfed, wet upper mid-altitude areas in eastern Africa and similar agroecologies. |
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General Information |
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Adaptation/Agroecological zone |
1300 - 2000 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 |
Semi dent |
| Grain Yield |
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| Grain yield under optimum conditions |
9.4 t/ha |
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Biotic Stress Performance |
| Grain yield under high density |
8.5 t/ha |
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Turcicum leaf blight (TLB) (1-9) |
2.8 |
| Grain yield under drought stress |
4.8 t/ha |
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Grey leaf spot (GLS) (1-9) |
2.4 |
| Grain yield under low N stress |
5.7 t/ha |
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Maize streak virus (MSV) (1-9) |
2.8 |
| Grain yield under striga conditions |
1.5 t/ha |
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Maize lethal necrosis (MLN) under art. inoc. (1-9) |
7.0 |
| Grain yield under MLN art. inoc. |
0.7 t/ha |
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Common rust |
2.2 |
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FAW leaf damage (1-9) |
3.6 |
| Agronomic Characteristics |
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FAW cob damage (1-9) |
5.5 |
| Days to 50% anthesis |
146 DAP |
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Grain weight loss (MW) |
0.2% |
| Plant height |
232.7 cm |
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Grain weight loss (LGB) |
0.3% |
| Ear height |
117.1 cm |
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Ear rots |
4.9% |
| Bad husk cover |
4.2% |
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Some diseases were originally scored on a 1-5 scale but all have been converted here to a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
| Root lodging |
1.7% |
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| Stalk lodging |
2.4% |
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| Anther-silking interval |
1.2 days |
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| Ears per plant (#) |
1.1 |
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Seed Production Characteristics |
| Ear aspect (1-5) |
2.6 |
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Female seed yield |
8.2 t/ha |
| Plant aspect (1-5) |
2.3 |
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Nicking |
3 days |
| 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)
LGB = Larger Grain Borer
Low N = Managed Low Nitrogen
masl = meters above sea level
MD = Managed drought
MSV = maize streak virus
MW= Maize Weevil
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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