| CIM21LAPP2A-4 is an intermediate-maturing, high-yielding, white maize hybrid with GLS and ear rot resistance. The product is notable for its good husk cover, ear position, standability, good male-female flowering synchrony for seed production, tolerance to drought stress (rainfed conditions), good (short and erect) plant architecture, and is suitable for food use in the central mid-altitude environments of Mexico or similar agro-ecologies in other regions. |
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General Information |
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Target Region |
Latin America |
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Adaptation/Agroecological zone |
1200 - 1800m above sea level |
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Type of product |
Three-way hybrid |
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Year first announced |
2024 |
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Grain Characteristics |
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Grain color |
White |
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Grain texture |
Semi-dent |
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Biotic Stress Performance |
| Abiotic Stress Performance |
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Grey leaf spot (GLS) (1-9)* |
2.1 |
| Grain yield under optimum conditions |
11.38 t/ha |
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Ear Rots (%) |
7.3% |
| Grain yield under rainfed conditions |
8.73 t/ha |
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*Scored on 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible |
| Grain yield on-farm (avg) |
8.81 t/ha |
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| Grain yield on-farm (opt.) |
11.11 t/ha |
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| Grain yield on-farm (rainfed) |
6.10 t/ha |
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Seed Production Characteristics |
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SC female parent seed yield |
5.2 t/ha |
| Agronomic Characteristics |
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Male seed yield |
3.7 t/ha |
| Maturity group |
Intermediate |
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Nicking |
0 days |
| 50% anthesis |
71 DAP |
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| Plant height |
245 cm |
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Comments |
| Ear height |
122 cm |
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Product information is based on data from the 2021 CIMMYT Mexico Stage 4 Trials and 2022 Stage 5 Trials. Actual performance will vary depending on a number of agronomic and environmental factors.
Abbreviations:
DAP = days after planting
SC = Single-cross
GLS = Grey leaf spot |
| Ear position (ratio) |
0.49 |
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| Ears per plant |
1.00 |
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| Ear aspect (1-9)* |
3.5 |
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| Plant aspect (1-9)* |
2.8 |
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| Bad husk cover |
2.9% |
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| Root lodging |
1.3% |
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| Stalk lodging |
3.3% |
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| Anther-silking interval |
0.8 days |
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| *Plant and ear aspects are scored on 1-9 scale, where 1 = desirable and 9 = undesirable characteristics |
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| Further Links |
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| Full Announcement & trial data |
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