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CKHMLN170374

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, ear rots, and MLN, 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 2019
     
  Grain Characteristics
  Grain color White
      Grain texture Semi dent
Grain Yield      
Grain yield under optimum conditions 6.8 t/ha   Biotic Stress Performance
Grain yield under drought stress 4.2 t/ha   Turcicum leaf blight (TLB) (1-9) 4.4
Grain yield under low N stress 3.9 t/ha   Grey leaf spot (GLS) (1-9) 2.6
Grain yield under MLN art. inoc. 3.8 t/ha   Maize streak virus (1-9) 0.4
      MLN Score (under art. inoc.)  (1-9) 4.5
Agronomic Characteristics   Ear rots 4.3%
Maturity 134 DAP   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.
Plant height 205.1 cm  
Ear height 102.3 cm      
Bad husk cover 12.7%   Seed Production Characteristics
Root lodging 1.6%   Nicking -6 day
Stalk lodging 2.4%      
Anther-silking interval -0.4 Day   Comments
Ears per plant (#) 1.1   Product information is based on data from various trials conducted by CIMMYT in eastern Africa in 2019.

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
Ear aspect (1-5) 2.8  
Plant aspect (1-5) 2.8  
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
Maturity Group > Intermediate maturing
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 > Turcicum leaf blight (TLB)
Grain Color > White grain
Grain Texture > Semi-dent
Product Type > Three-way cross hybrid
Region > Eastern Africa
Year announced > 2019
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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