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CIM19EAPP1A-17

CIMMYT's eastern Africa product pipeline 1A (EA-PP1A) focuses on developing intermediate maturing, white grain, high-yielding maize hybrids that are drought tolerant, NUE, resistant to GLS, TLB, ear rots, and MSV, and are suitable for food use in tropical rainfed dry/wet mid-altitude areas in eastern Africa.   General Information
  Adaptation/Agroecological zone 1000 - 1600 masl
  Type of product Three-way cross hybrid
  Year first announced 2021
     
  Grain Characteristics
      Grain color White
Grain Yield   Grain texture Semi-Dent
Grain yield under optimum conditions 8.4 t/ha      
Grain yield on-farm 7.0 t/ha   Biotic Stress Performance
Grain yield under drought stress 3.7 t/ha   Turcicum leaf blight (TLB) (1-9) 3.6
Grain yield under FAW (art. inf.; no-choice trial) 6.5 t/ha   Grey leaf spot (GLS) (1-9) 1.0
Grain yield under HD 6.4 t/ha   Common rust (1-9) 2.8
Grain yield under low N stress 5.8 t/ha   Maize Lethal Necrosis (MLN) under art. inoc. (1-9) 6.5
Grain yield under MLN art. inoc. 0.6 t/ha   MSV (1-9) 0.8
Grain yield under random stress 4.6 t/ha   Ear Rots 4.7%
Grain yield under striga conditions 4.3 t/ha   Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.
     
Agronomic Characteristics      
Maturity 150 DAP   Seed Production Characteristics
Plant height 240 cm   Female seed yield  8.9 t/ha
Ear height 114 cm   Male seed yield  2.5 t/ha
Bad husk cover 3.6%   Nicking 0.0 Days
Root lodging 6.0%      
Stalk lodging 3.9%   Comments
Anthesis-silking interval 2 Days   Product information is based on data from various trials conducted by CIMMYT in eastern Africa in 2019, 2020.

Abbreviations:
art. inf. = artificial infestation
art. inoc. = artificial inoculation
DAP = days after planting
GLS = Grey Leaf Spot
HD = High Density (80,000 plants per ha)
Low N = Managed Low Nitrogen
masl = meters above sea level
MD = Managed drought
MSV = maize streak virus
NUE = Nitrogen Use Efficient
Opt = Optimum Management
TLB = Turcicum Leaf Blight
Ear aspect (1-5) 2.4  
Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics  
 
     
Further Links  
Full Announcement  
Trial Data Summary  
Regional Trial Site Information  
     
     
     
     
Patent Information:

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Tags
Year announced > 2021
Abiotic Stress Tolerance > Nitrogen-use efficient (NUE)
Biotic Stress Tolerance > Ear rots
Biotic Stress Tolerance > Grey leaf spot (GLS)
Biotic Stress Tolerance > Turcicum leaf blight (TLB)
Biotic Stress Tolerance > Maize streak virus (MSV)
Region > Eastern Africa
Abiotic Stress Tolerance > Drought tolerant
Product Type > Three-way cross hybrid
Grain Color > White grain
Adaptation > Mid-altitudes
Biotic Stress Tolerance > Rust
Grain Texture > Semi-dent
Maturity Group > Late maturing
Seed producibility traits > Good nicking
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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