CZH17207Q

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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 Semi-flint       Protein content 9.2% Grain Yield   Tryptophan content 0.068% Grain yield (WLMA) 9.4 t/ha   Zinc content 15.9 mg/kg Grain yield (WUMA) 6.4 t/ha   Iron content 13.5 mg/kg Grain yield (DMA) 6.2 t/ha   Kernel weight (100 kernels) 40.8 g Grain yield (WLL) 5.7 t/ha       Grain yield (DLL) 3.9 t/ha   Biotic Stress Performance Grain yield under low N stress 2.1 t/ha   Turcicum leaf blight (TLB) (1-9) 2.0       Rust (1-9) 3.4 Agronomic Characteristics   Maize streak virus (MSV) (1-9) 1.6 Maturity 139 DAP   Grey leaf spot (GLS) (1-9) 2.0 Anthesis-silking interval 0.7 days   Ear rot 6.6% Bad husk cover 0.8%   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 131cm       Plant height 251cm   Seed Production Characteristics Root lodging 7.1%   Female seed yield  6.44 t/ha Stalk lodging 5.6%   Male seed yield  2.60 t/ha Ear aspect (1-5) 3.0   Nicking (-3.48) Days 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.

Abbreviations:
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