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CKH150668

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      
Grain yield under optimum conditions 6.5 t/ha   Biotic Stress Performance
Grain yield under HD 4.2 t/ha   Turcicum leaf blight (TLB) (1-9) 2.4
Grain yield under drought stress 0.2 t/ha   Grey leaf spot (GLS) (1-9) 2.0
Grain yield under low N stress 2.0 t/ha   Common rust (1-9) 2.8
      Maize Lethal Necrosis (MLN) under art. inoc. (1-9) 6.0
Agronomic Characteristics   Grain weight loss (MW) 4.7%
Maturity 159 DAP   Grain weight loss (LGB) 18.0%
Plant height 236 cm   Ear Rots 8.4%
Ear height 118 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.
Bad husk cover 5.5%  
Root lodging 4.7%      
Stalk lodging 12.3%   Seed Production Characteristics
Anthesis-silking interval 1.1 Days   Nicking 0.0 Days
Ear aspect (1-5) 2.6      
Plant aspect (1-5) 2.7   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 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
 
     
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 > Late maturing
Region > Eastern Africa
Year announced > 2018
Seed producibility traits > Good nicking
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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