| CIM21EAPP3-38 is a high-yielding, white maize hybrid, with resistance to GLS, TLB, rust, ear rots, and root & stalk lodging tolerance, bred for the highlands of eastern Africa. It is notable for excellent male/female synchrony for seed production. |
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General Information |
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Target region |
Eastern Africa |
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Adaptation/Agroecological zone |
1800-2400 masl |
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Type of product |
Three-way cross |
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Year first announced |
2024 |
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Kernel Characteristics |
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Kernel color |
White |
| Grain Yield |
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Kernel texture |
Semi-dent |
| Grain yield (opt.) |
8.81 t/ha |
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| Grain yield under on-farm conditions |
9.0 t/ha |
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Biotic Stress Performance |
| Grain yield under low N stress |
2.4 t/ha |
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Grey leaf spot (GLS) (AI) (1-9)* |
5.3 |
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Turcicum leaf blight (TLB) (AI) (1-9)* |
3.4 |
| Agronomic Characteristics |
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Rust (nat.) (1-9)* |
2.2 |
| Maturity group |
Late |
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Ear rots |
4.0% |
| 50% anthesis |
91.7 days |
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*Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
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| Anthesis-silking interval |
1.9 days |
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| Ear height |
140 cm |
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Seed Production Characteristics |
| Plant height |
251 cm |
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SC female parent yield |
7.4 t/ha |
| Ears per plant |
1.0 |
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Male parent yield |
2.4 t/ha |
| Bad husk cover |
10.8% |
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Nicking |
1.1 days |
| Ear aspect (1-5)* |
2.8 |
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| Plant aspect (1-5)* |
3.2 |
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Comments |
| Root lodging |
13.2% |
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Product information is based on data from the
CIMMYT Eastern Africa 2022 Regional Trial
(CIM22RTEAPP3) and 2023 regional on‐farm trials (CIM23ROFT-EA-PP3). Actual performance will vary depending on a number of agronomic and environmental factors.
Abbreviations:
AI = artificial infestation/inoculation
GDD = growing degree-days (°C)
GLS = Grey Leaf Spot
Low N = managed low nitrogen stress
masl = meters above sea level
nat. = natural infestation
opt. = optimum (44,444 plants per ha)
RS = random stress
SC = single-cross
TLB = Turcicum Leaf Blight |
| Stalk lodging |
9.2% |
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| *Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics |
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| Further Links |
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Full Product Announcement
(including trial results summary and site information) |
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