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HP1317

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 14.0µg/g
Grain yield (MEA) (OPT) 10 t/ha      
Grain yield (MEB) (OPT) 6 t/ha   Biotic Stress Performance
Grain yield (MEC) (RS) 5.3 t/ha   Turcicum leaf blight (TLB) (1-9) 1.7
Grain yield under drought stress 2.3 t/ha   Rust (1-9) 1.2
Grain yield under low N stress (NUE) 3.6 t/ha   Maize Streak Virus (MSV) (1-9) 3.5
      Grey leaf spot (GLS) (1-9) 1.2
Agronomic Characteristics   Ear rot  9.5%
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 60.7  
Anthesis-silking interval 1.1 days      
Bad husk cover 1.8%   Comments
Ear aspect (1-5) 2.8   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
Ears per plant 1.0  
Ear height 95.1 cm  
Plant height 191.4  
Root lodging 1.2%  
Stalk lodging 1.2%  
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:
Pamela SITHOLE
Administrative Coordinator
CIMMYT
pa.sithole@cgiar.org

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