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CAH219

CAH219 is an intermediate-maturing maize hybrid bred for the tropical lowlands of South Asia. This high-yielding, yellow-kernel maize hybrid performs well under drought and heat stress conditions, and has tolerance to TLB and ear rots.   General Information
  Target Region South Asia
  Adaptation/Agroecological zone Tropical Lowland
  Type of product Single-cross hybrid
  Year first announced 2024
     
      Kernel Characteristics
Grain Yield   Kernel color Yellow
Grain yield (opt.) 8.21 t/ha   Kernel texture Semi-Dent
Grain yield under on-farm conditions 5.04 ± 2.48 t/ha      
Grain yield under Heat Stress (Mod VPD) 5.72 t/ha   Biotic Stress Performance
Grain yield under Heat Stress (Low VPD) 8.37 t/ha   Fusarium stalk rot (FSR) (AI) (1-9)* 6.3
Grain yield random stress (RS) 5.21 t/ha   Turcicum leaf blight (TLB) (AI) (1-9)* 4.0
      Macrophomina Stalk Rot (MSR) (AI) (1-9)* 6.7
Agronomic Characteristics   Ear rots (1-9)* 4.2
Maturity group Medium   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.
50% anthesis 55 days  
842 GDD (°C)      
Anthesis-silking interval  2.1 days   Seed Production Characteristics
Ear height  111 cm   Female parent yield 3.63 t/ha
Plant height  224 cm   Male parent yield 3.51 t/ha
Ears per plant 0.90   Nicking 1.0 days
Ear aspect (1-5)* 2.0      
Plant aspect (1-5)* 1.5   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 the CIMMYT South Asia 2021/22 Stage 4 and 2022/23 Stage 5 Trials (see "Further Links" section). Actual performance will vary depending on a number of agronomic and environmental factors. 

Abbreviations:
AI = artificial infestation/inoculation
FSR =
Fusarium stalk rot
GDD = growing degree-days (°C)
MSR =
Macrophomina Stalk Rot
Opt = optimal environment
RS = random stress trial
TLB =
Turcicum Leaf Blight
VPD = vapor-pressure deficit
 
     
Further Links  
Full Product Announcement
(including trial results summary and site information)
 
 
 
     
     
     
     
     
Patent Information:

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Tags
Abiotic Stress Tolerance > Heat tolerant
Abiotic Stress Tolerance > Drought tolerant
Adaptation > Lowlands
Biotic Stress Tolerance > Ear rots
Biotic Stress Tolerance > Turcicum leaf blight (TLB)
Grain Color > Yellow grain
Grain Texture > Semi-dent
Maturity Group > Intermediate maturing
Product Type > Single-cross hybrid
Region > South Asia
Seed producibility traits > Good nicking
Year announced > 2024
For Information, Contact:
Patne Nagesh
CIMMYT
P.Nagesh@cgiar.org

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