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CKH150694

CIMMYT's eastern Africa product profile 2 (EA-PP2) focuses on developing high-yielding, late-maturing maize varieties with white grain, drought tolerance, NUE, and resistance to GLS, TLB, MSV, ear rots, and common rust, that are suitable for food use in tropical, rainfed, wet upper mid-altitude areas in eastern Africa and similar agroecologies.    General Information
  Adaptation/Agroecological zone 1300 - 2000 masl
  Type of product Three-way cross hybrid
  Year first announced 2018
     
  Grain Characteristics
  Grain color White
  Grain texture Semi-flint
         
Grain Yield   Biotic Stress Performance
Grain yield under optimum conditions 6.1 t/ha   Turcicum leaf blight (TLB) (1-9) 2.2
Grain yield under HD 3.5 t/ha   Grey leaf spot (GLS) (1-9) 2.0
Grain yield under drought stress 1.9 t/ha   Common rust (1-9) 2.8
Grain yield under low N stress 2.6   Maize Lethal Necrosis (MLN) under art. inoc. (1-9) 7.0
      Grain weight loss (MW) 11.8%
Agronomic Characteristics   Grain weight loss (LGB) 14.6%
Maturity 152 DAP   Ear Rots 10.4%
Plant height 223 cm   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.
Ear height 108 cm  
Bad husk cover 9.0%      
Root lodging 5.0%   Seed Production Characteristics
Stalk lodging 13.4%   Nicking -1.0 Days
Anthesis-silking interval 1.9 Days      
Ear aspect (1-5) 2.7   Comments
Plant aspect (1-5) 2.7   Product information is based on data from various trials conducted by CIMMYT in eastern Africa in 2017.

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
MD = managed drought
MSV = maize streak virus
NUE = Nitrogen Use Efficient
Opt = Optimum Management
TLB = Turcicum Leaf Blight
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 > Drought tolerant
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 > Late maturing
Region > Eastern Africa
Year announced > 2018
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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