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CKH150154

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 anounced 2017
     
  Grain Characteristics
  Grain color White
      Grain texture Semi flint
Grain Yield      
Grain yield under optimum conditions 9.2 t/ha   Biotic Stress Performance
Grain yield under high density 6.6 t/ha   Turcicum leaf blight (TLB) (1-9) 4.8
Grain yield under random stress 3.88 t/ha   Grey leaf spot (GLS) (1-9) 3.6
Grain yield under low N stress 3.58 t/ha   Common rust (1-9) 2.9
Grain yield under striga conditions 2.78 t/ha   Maize lethal necrosis (MLN) under art. inoc. (1-9) 5.4
      Ear rots 2.9%
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 215.5 cm      
Ear height 103.9 cm   Seed Production Characteristics
Bad husk cover 9.6%   Nicking -1 Days
Root loging 2.3%      
Stalk lodging 9.6%   Comments
Anther-silking interval 0.3 Days   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
NUE = Nitrogen Use Efficient
TLB = Turcicum Leaf Blight
Ear aspect (1-5) 2.8  
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
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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