| CIM21SAPP2-12 is an early-maturing, white, high yielding, drought tolerant, NUE, and resistant to GLS, TLB and MSV, bred for food use in tropical, rainfed, dry/wet mid-altitude and lowland ecologies in southern Africa and similar agroecologies. |
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General Information |
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Target region |
Southern Africa |
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Adaptation/Agroecological zone |
<1800 masl |
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Type of product |
Three-way cross hybrid |
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Year first announced |
2022 |
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| Grain Yield |
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Grain Characteristics |
| Grain yield under optimum conditions |
9.14 t/ha |
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Grain color |
White |
| Grain yield under managed drought stress |
3.41 t/ha |
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Grain texture |
Semi dent |
| Grain yield under low N stress |
5.95 t/ha |
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Biotic Stress Performance |
| Agronomic Characteristics |
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Turcicum leaf blight (TLB) (1-9)* |
4.1 |
| 50% anthesis |
858 GDD (°C) |
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Grey leaf spot (GLS) (1-9)* |
3.0 |
| Anthesis-silking interval |
0.17 Days |
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Maize Streak Virus (MSV) (1-9)* |
3.3 |
| Plant height |
259.2 cm |
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Ear rots |
5.7% |
| Ear height |
137.9 cm |
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*Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
| Ears per plant |
1.1 |
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| Bad husk cover |
7.8% |
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| Ear aspect (1-5)* |
2.4 |
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Seed Production Characteristics |
| Root lodging |
3.5% |
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SC female parent yield |
9.34 t/ha |
| Stalk lodging |
2.9% |
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Male parent yield |
3.13 t/ha |
| *Ear aspect is scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics |
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Nicking |
-3.03 days |
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Comments |
| Further Links |
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Product information is based on data from various trials conducted by CIMMYT in southern Africa in 2021 and 2022. Actual performance will vary depending on a number of agronomic and environmental factors.
Abbreviations:
GDD = growing degree-days
GLS = Grey Leaf Spot
Low N = managed low nitrogen stress
masl = meters above sea level
MSV = Maize Streak Virus
opt. = optimum (44,444 plants per ha)
SC = single-cross
TLB = Turcicum Leaf Blight (E. turcicum) |
| Full product announcement, including southern Africa 2021 Regional Trial and 2022 Regional On-Farm Trial data |
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