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HP1323

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 2013
     
  Grain Characteristics
  Grain color orange
      Grain texture Semi-flint
Grain Yield   PVA content 10.0µg/g
Grain yield (MEA) (OPT) 9 t/ha      
Grain yield (MEB) (OPT) 7 t/ha   Biotic Stress Performance
Grain yield (MEC) (RS) 4 t/ha   Turcicum leaf blight (TLB) (1-9) 2.2
      Rust (1-9) 3.5
Agronomic Characteristics   Grey leaf spot (GLS) (1-9) 2.4
Maturity Early   Ear rot  3.1%
Days to 50% Anthesis 59.8   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.
Anthesis-silking interval 1.7 days  
Bad husk cover 6.8%      
Ear aspect (1-5) 2.6   Seed Production Characteristics
Ears per plant 1.3   Female seed yield  5.6 t/ha
Ear height 121.1 cm   Male seed yield  1.9 t/ha
Plant height 232.2 cm   Nicking -4 days
Root lodging 1.2%      
Stalk lodging 2.1%   Comments
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 2013 Trials. Actual performance will vary depending on a number of agronomic and environmental factors.

Abbreviations:
DAP = Days After Planting
DLL = Dry Lowlands
DMA = Dry Mid-Altitudes
GLS = Grey Leaf Spot
masl=Meters above sea level
MEA = Mega-environment A
MEB = Mega-environment B
MEC = Mega-environment C
MSV = maize streak virus
NUE = Nitrogen Use Efficient
PVA = Provitamin A
TLB = Turcicum Leaf Blight
 
     
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
Adaptation > Mid-altitudes
Biofortification > Provitamin A
Biotic Stress Tolerance > Ear rots
Biotic Stress Tolerance > Grey leaf spot (GLS)
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 > 2013
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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