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CKDHH15020

CIMMYT's eastern Africa product pipeline 1B (EA-PP1B) focuses on developing high-yielding, early maturing maize varieties with white grain, drought tolerance, NUE, and resistance to GLS, TLB, and ear rots, that are suitable for food use in tropical, rainfed, dry, mid-altitude areas in eastern Africa and similar agroecologies.    General Information
  Adaptation/Agroecological zone 1000 - 1600 masl
  Type of product Three-way cross hybrid
  Year first announced 2017
     
  Grain Characteristics
  Grain color White
      Grain texture Semi flint
Grain Yield      
Grain yield under optimum conditions 9.7 t/ha   Biotic Stress Performance
Grain yield under high density 9.1 t/ha   Turcicum leaf blight (TLB) (1-9) 3.9
Grain yield under random stress 5.7 t/ha   Grey leaf spot (GLS) (1-9) 3.2
Grain yield under low N stress 3.7 t/ha   Common rust (1-9) 2.9
Grain yield under striga conditions 3.3 t/ha   Maize lethal necrosis (MLN) under art. inoc. (1-9) 5.3
      Ear rots 3.8%
Agronomic Characteristics   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.
Maturity 106 DAP  
Plant height 228.8 cm  
Ear height 113.1 cm      
Bad husk cover 8.2%   Seed Production Characteristics
Root lodging 2.3%   Nicking -2 Days
Stalk lodging 8.8%      
Anther-silking interval 1.7 Days   Comments
Ear aspect (1-5) 2.5   Product information is based on data from various trials conducted by CIMMYT in eastern Africa in 2016.

Abbreviations:
art. inoc. = artificial inoculation
DAP = days after planting
GLS = Grey Leaf Spot
HD = High Density (80,000 plants per ha)
Low N = Managed Low Nitrogen
masl = meters above sea level
MSV = maize streak virus
NUE = Nitrogen Use Efficient
TLB = Turcicum Leaf Blight
Plant aspect (1-5) 2.3  
Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics  
 
     
Further Links  
Full Announcement  
Trial Data Summary  
Regional Trial Site Information  
     
     
Patent Information:

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Tags
Product Type > Three-way cross hybrid
Abiotic Stress Tolerance > Nitrogen-use efficient (NUE)
Adaptation > Mid-altitudes
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 > White grain
Grain Texture > Semi-flint
Maturity Group > Early maturing
Region > Eastern Africa
Year announced > 2017
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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