| CIM20EAPP1-01-1 is an intermediate-maturing, high-yielding, white maize hybrid with drought tolerance, nitrogen-use efficiency, and resistance to GLS, TLB, ear rots, and MSV. |
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General Information |
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Adaptation/Agroecological zone |
600-1500 masl |
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Region |
Eastern Africa |
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Type of product |
Three-way cross |
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Year first announced |
2022 |
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| Grain Yield |
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Kernel Characteristics |
| Grain yield (OPT) |
9.15 t/ha |
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Kernel color |
White |
| Grain yield (RS) |
2.17 t/ha |
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Kernel texture |
Semi-dent, opaque crown |
| Grain yield under low N stress |
4.62 t/ha |
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| Grain yield under managed drought |
1.24 t/ha |
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Biotic Stress Performance |
| Grain yield under FAW (AI) |
4.27 t/ha |
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MLN (AI) |
5.6 |
| Grain yield under FAW (nat.) |
5.51 t/ha |
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Grey leaf spot (GLS) (1-9) |
1.7 |
| Grain yield under striga stress |
6.59 t/ha |
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Turcicum leaf blight (TLB) (1-9) |
5.0 |
| Grain yield under MLN stress (AI) |
5.26 t/ha |
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FAW foliar damage (AI) |
4.9 |
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FAW ear damage (AI) |
1.4 |
| Agronomic Characteristics |
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Ear rots |
11.6% |
| 50% anthesis |
815.5 GDD |
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Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
| Anthesis-silking interval |
2.2 Days |
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| Ear height |
113.1 cm |
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| Plant height |
216.4 cm |
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Seed Production Characteristics |
| Ears per plant |
1.2 |
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SC female parent yield |
8.6 t/ha |
| Bad husk cover |
5.6% |
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Male parent yield |
3.4 t/ha |
| Ear aspect (1-5) |
2.4 |
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Nicking |
-2 days |
| Plant aspect |
2.6 |
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| Root lodging |
9.9% |
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Comments |
| Stalk lodging |
6.1% |
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Product information is based on data from the CIMMYT East Africa 2020 Regional Trial (CIM20EAPP1A) and 2021 regional on-farm trials (EA-ROFT 2021-1A).
Abbreviations:
AI = artificial infestation/inoculation
FAW = fall armyworm
GDD = growing degree-days (°C)
GLS = Grey Leaf Spot
Low N = managed low nitrogen
masl = meters above sea level
MLN = maize lethal necrosis
MSV = maize streak virus
nat. = natural infestation
NUE = Nitrogen-use efficient
RS = random stress
SC = single-cross
TLB = Turcicum Leaf Blight |
| 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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