Quality Protein Maize (QPM) is an affordable option for alleviating protein malnutrition and reducing animal feed costs. QPM looks and tastes the same as normal maize but contains higher levels of the essential amino acids lysine and tryptophan. Eating QPM is especially beneficial for children who survive on a maize-dominated diet.    General Information
  Adaptation/Agroecological zone 800-1800 masl
  Region Southern Africa
  Type of product Three-way Cross
  Year first announced 2018
  Grain Characteristics
  Grain color White
  Grain texture Flint
      Protein content 9.1%
Grain Yield   Tryptophan content 0.078%
Grain yield (WLMA) 8.3t/ha   Zinc content 18.5 mg/kg
Grain yield (WUMA) 5.7t/ha   Iron content 17.3 mg/kg
Grain yield (DMA) 5.6t/ha   Kernel weight (100 kernels) 38.1 g
Grain yield (WLL) 5.5t/ha      
Grain yield (DLL) 3.9 t/ha   Biotic Stress Performance
Grain yield under low N stress 2.3t/ha   Turcicum leaf blight (TLB) (1-9) 6.0
      Rust (1-9) 3.2
Agronomic Characteristics   Maize streak virus (MSV) (1-9) 1.6
Maturity 130 DAP   Grey leaf spot (GLS) (1-9) 3.4
Anthesis-silking interval 0.1 days   Ear rot 6.7%
Bad husk cover 2.9%   Diseases were originally scored on a 1-5 scale but have been converted here to a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.
Ears per plant 1.2  
Ear height 113cm      
Plant height 233cm   Seed Production Characteristics
Root lodging 11.8%   Female seed yield  5.86t/ha
Stalk lodging 8.5%   Male seed yield  2.58t/ha
Ear aspect (1-5) 3.1   Nicking 0.36 Days
Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics      
      Product information is based on data from the CIMMYT Southern Africa Maize Regional On-Station 2018 Trials.

DAP = Days After Planting
DLL = Dry Lowlands
DMA = Dry Mid-Altitudes
GLS = Grey Leaf Spot
Low N = Managed Low Nitrogen
masl= meters above sea level
MSV = maize streak virus
NUE = Nitrogen Use Efficient
TLB = Turcicum Leaf Blight
WLL = Wet Lowlands
WLMA = Wet Lower Mid-Altitudes
WUMA = Wet Upper Mid-Altitudes
Further Links  
Full Announcement  
Regional Trial Data Summary  
Regional Trial Site Information  
QPM Guide for Ethiopia  
Meta-analysis of studies on QPM  
Patent Information:

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Product Type > Three-way cross hybrid
Adaptation > Mid-altitudes
Biofortification > Quality Protein
Biotic Stress Tolerance > Ear rots
Biotic Stress Tolerance > Grey leaf spot (GLS)
Biotic Stress Tolerance > Maize streak virus (MSV)
Biotic Stress Tolerance > Rust
Grain Color > White grain
Grain Texture > Flint
Maturity Group > Intermediate maturing
Region > Southern Africa
Seed producibility traits > Good nicking
Year announced > 2018
Adaptation > Highlands
Adaptation > Lowlands
For Information, Contact:
Nicholas Davis
Program Manager

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