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 10.5%
      Tryptophan content 0.072%
Grain Yield   Zinc content 18.1 mg/kg
Grain yield (WLMA) 8.5 t/ha   Iron content 19.2 mg/kg
Grain yield (WUMA) 6.0 t/ha   Kernel weight (100 kernels) 46.5 g
Grain yield (WLL) 5.3 t/ha      
Grain yield (DMA) 4.7 t/ha   Biotic Stress Performance
Grain yield (DLL) 3.0 t/ha   Turcicum leaf blight (TLB) (1-9) 3.0
Grain yield (Low N) 1.6 t/ha   Rust (1-9) 3.8
      Maize streak virus (MSV) (1-9) 1.6
Agronomic Characteristics   Grey leaf spot (GLS) (1-9) 4.8
Maturity 138 DAP   Ear rot 4.7%
Anthesis-silking interval 0.1 days   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.
Bad husk cover 2.3%  
Ears per plant 1.0      
Ear height 116 cm   Seed Production Characteristics
Plant height 247 cm   Female seed yield  5.36 t/ha
Root lodging 6.1%   Male seed yield  1.6 t/ha
Stalk lodging 11.8%   Nicking - 1.64 Days
Ear aspect (1-5) 3.1      
Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics   Comments
  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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Region > Southern Africa
Year announced > 2018
Biotic Stress Tolerance > Ear rots
Biotic Stress Tolerance > Grey leaf spot (GLS)
Biotic Stress Tolerance > Turcicum leaf blight (TLB)
Grain Texture > Flint
Adaptation > Lowlands
Adaptation > Mid-altitudes
Biofortification > Quality Protein
Maturity Group > Intermediate maturing
Product Type > Three-way cross hybrid
Grain Color > White grain
Biotic Stress Tolerance > Rust
Adaptation > Highlands
For Information, Contact:
Nicholas Davis
Program Manager

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