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CIM21SAPP2-12

CIM21SAPP2-12 is an early-maturing, white, high yielding, drought tolerant, NUE, and resistant to GLS, TLB and MSV, bred for food use in tropical, rainfed, dry/wet mid-altitude and lowland ecologies in southern Africa and similar agroecologies.    General Information
  Target region Southern Africa
  Adaptation/Agroecological zone <1800 masl
  Type of product Three-way cross hybrid
  Year first announced 2022
         
Grain Yield   Grain Characteristics
Grain yield under optimum conditions 9.14 t/ha   Grain color White
Grain yield under managed drought stress 3.41 t/ha   Grain texture Semi dent
Grain yield under low N stress 5.95 t/ha      
      Biotic Stress Performance
Agronomic Characteristics   Turcicum leaf blight (TLB) (1-9)* 4.1
50% anthesis 858 GDD (°C)   Grey leaf spot (GLS) (1-9)* 3.0
Anthesis-silking interval 0.17 Days   Maize Streak Virus (MSV) (1-9)* 3.3
Plant height 259.2 cm   Ear rots 5.7%
Ear height 137.9 cm   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.
Ears per plant 1.1  
Bad husk cover 7.8%      
Ear aspect (1-5)* 2.4   Seed Production Characteristics
Root lodging 3.5%   SC female parent yield 9.34 t/ha
Stalk lodging 2.9%   Male parent yield 3.13 t/ha
*Ear aspect is scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics   Nicking -3.03 days
     
      Comments
Further Links   Product information is based on data from various trials conducted by CIMMYT in southern Africa in 2021 and 2022.  Actual performance will vary depending on a number of agronomic and environmental factors.

Abbreviations:
GDD = growing degree-days
GLS = Grey Leaf Spot
Low N = managed low nitrogen stress
masl = meters above sea level
MSV = Maize Streak Virus
opt. = optimum (44,444 plants per ha)
SC = single-cross
TLB = Turcicum Leaf Blight (
E. turcicum)
Full product announcement, including southern Africa 2021 Regional Trial and 2022 Regional On-Farm Trial data   
 
 
     
     
     
     
     
     
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Tags
Abiotic Stress Tolerance > Drought tolerant
Abiotic Stress Tolerance > Nitrogen-use efficient (NUE)
Adaptation > Lowlands
Adaptation > Mid-altitudes
Biotic Stress Tolerance > Ear rots
Biotic Stress Tolerance > Grey leaf spot (GLS)
Biotic Stress Tolerance > Maize streak virus (MSV)
Biotic Stress Tolerance > Turcicum leaf blight (TLB)
Grain Color > White grain
Grain Texture > Semi-dent
Maturity Group > Early maturing
Product Type > Three-way cross hybrid
Region > Southern Africa
Year announced > 2022
For Information, Contact:
Nicholas Davis
Program Manager
CIMMYT
n.davis@cgiar.org

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