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HP1304

CIMMYT's biofortified PVA maize pipeline focuses on developing high-yielding, nutritious maize hybrids that have orange grain and 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 southern Africa.   General Information
  Adaptation/Agroecological zone 800-1500 masl
  Region Southern Africa
  Type of product Three-way cross hybrid
  Year first announced 2017
     
  Grain Characteristics
  Grain color orange
      Grain texture Semi-flint
Grain Yield   PVA content 7.5µg/g
Grain yield (MEA) (OPT) 10 t/ha      
Grain yield (MEB) (OPT) 6.9 t/ha   Biotic Stress Performance
Grain yield (MEC) (RS) 5.4 t/ha   Turcicum leaf blight (TLB) (1-9) 1.6
Grain yield under drought stress 3.0 t/ha   Rust (1-9) 1.0
Grain yield under low N stress (NUE) 2.7 t/ha   Maize Streak Virus (MSV) (1-9) 2.9
      Grey leaf spot (GLS) (1-9) 2.6
Agronomic Characteristics   Ear rot  5.1%
Maturity Early   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.
Days to 50% Anthesis 62.6  
Anthesis-silking interval 0.5 days      
Bad husk cover 1.3%   Seed Production Characteristics
Ear aspect (1-5) 3.1   Female seed yield  8.3 t/ha
Ears per plant 1.4   Male seed yield  1.9 t/ha
Ear height 71.4 cm   Nicking 2.4 days
Plant height 164.7      
Root lodging 8.5%   Comments
Stalk lodging 1.1%   Product information is based on data from the CIMMYT Southern Africa Maize Regional On-Station 2017 Trials. Actual performance will vary depending on a number of agronomic and environmental factors.

Abbreviations:
GLS = Grey Leaf Spot
masl = Meters above sea level
MEA = Mega-environment A (wet upper mid-altitudes)
MEB = Mega-environment B (wet lower mid-altitudes)
MEC = Mega-environment C (dry mid-altitudes)
MSV = maize streak virus
NUE = Nitrogen Use Efficient
PVA = Provitamin A
TLB = Turcicum Leaf Blight
Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics  
 
     
Further Links  
1. Maize Mega-Environments (map)  
 
2. Biofortified orange maize is as efficacious as a vitamin A supplement   
 
 
3. Provitamin A maize within the maize seed systems and grain value chain in Tanzania  
 
 
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Tags
Product Type > Three-way cross hybrid
Abiotic Stress Tolerance > Drought tolerant
Abiotic Stress Tolerance > Nitrogen-use efficient (NUE)
Adaptation > Mid-altitudes
Biofortification > Provitamin A
Biotic Stress Tolerance > Ear rots
Biotic Stress Tolerance > Grey leaf spot (GLS)
Biotic Stress Tolerance > Maize streak virus (MSV)
Biotic Stress Tolerance > Rust
Biotic Stress Tolerance > Turcicum leaf blight (TLB)
Grain Color > Orange grain
Grain Texture > Semi-flint
Maturity Group > Early maturing
Region > Southern Africa
Year announced > 2017
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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