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CIM20EAPP1-01-38

CIM20EAPP1-01-38 is an intermediate-maturing, high-yielding, white maize hybrid with drought tolerance, nitrogen-use efficiency, and resistance to GLS, TLB, ear rots, MSV, and striga.   General Information
  Adaptation/Agroecological zone 600-1500 masl
  Region Eastern Africa
  Type of product Three-way cross
  Year first announced 2022
         
Grain Yield   Kernel Characteristics
Grain yield (OPT) 8.86 t/ha   Kernel color White
Grain yield (RS) 2.32 t/ha   Kernel texture Semi-dent, opaque crown
Grain yield under low N stress 4.41 t/ha      
Grain yield under managed drought 2.45 t/ha   Biotic Stress Performance
Grain yield under FAW (AI) 6.78 t/ha   MLN (AI) 6.9
Grain yield under FAW (nat.) 5.92 t/ha   Grey leaf spot (GLS)  (1-9) 2.6
Grain yield under striga stress 6.36 t/ha   Turcicum leaf blight (TLB)  (1-9) 5.9
Grain yield under MLN stress (AI) 3.14 t/ha   FAW foliar damage (AI) 4.8
      FAW ear damage (AI) 1.6
Agronomic Characteristics   Ear rots 10.3%
50% anthesis 791.0 GDD   Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.
Anthesis-silking interval  1.7 days  
Ear height  101.3 cm      
Plant height  204.1 cm   Seed Production Characteristics
Ears per plant 1.1   SC female parent yield 8.18 t/ha
Bad husk cover 7.1%   Male parent yield 2.88 t/ha
Ear aspect (1-5) 2.5   Nicking -1 day
Plant aspect (1-5) 2.6      
Root lodging 8.5%   Comments
Stalk lodging 5.5%   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  
 
     
Further Links  
Full Product Announcement
(including trial results summary and site information)
 
 
     
     
     
     
Patent Information:

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Tags
Abiotic Stress Tolerance > Drought tolerant
Abiotic Stress Tolerance > Nitrogen-use efficient (NUE)
Adaptation > Mid-altitudes
Biotic Stress Tolerance > Ear rots
Biotic Stress Tolerance > Grey leaf spot (GLS)
Biotic Stress Tolerance > Maize streak virus (MSV)
Biotic Stress Tolerance > Turcicum leaf blight (TLB)
Biotic Stress Tolerance > Striga
Grain Color > White grain
Grain Texture > Semi-dent
Maturity Group > Intermediate maturing
Product Type > Three-way cross hybrid
Region > Eastern Africa
Year announced > 2022
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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