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CKH150331

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, MSV, 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 2018
     
  Grain Characteristics
  Grain color White
      Grain texture Semi dent
Grain Yield      
Grain yield under optimum conditions 6.3 t/ha   Biotic Stress Performance
Grain yield under high density 5.9 t/ha   Turcicum leaf blight (TLB) (1-9) 2.8
Grain yield under drought stress 0.6 t/ha   Grey leaf spot (GLS) (1-9) 1.8
Grain yield under low N stress 4.8 t/ha   MSV (1-9) 3.2
      Common rust (1-9) 2.6
Agronomic Characteristics   Maize lethal necrosis (MLN) under art. inoc. (1-9) 5.0
Maturity 142 DAP   Grain weight loss (MW) 13.7%
Plant height 226 cm   Grain weight loss (LGB) 18.7%
Ear height 108 cm   Ear Rots 7.0%
Bad husk cover 6.0%   Some 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.
Root loging 2.4%  
Stalk lodging 8.4%  
Anther-silking interval 0.4 Days      
Ear aspect (1-5) 2.5   Seed Production Characteristics
Plant aspect (1-5) 2.7   Nicking -3 Days
Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics      
  Comments
      Product information is based on data from various trials conducted by CIMMYT in eastern Africa in 2018.

Abbreviations:
art. inoc. = artificial inoculation
DAP = days after planting
FAW = Fall armyworm
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
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 > Maize Lethal Necrosis (MLN)
Biotic Stress Tolerance > Maize streak virus (MSV)
Biotic Stress Tolerance > Rust
Biotic Stress Tolerance > Turcicum leaf blight (TLB)
Grain Color > White grain
Grain Texture > Semi-dent
Maturity Group > Early maturing
Region > Eastern Africa
Year announced > 2018
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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