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CIM22NUVA-75

CIM22NUVA-75 is an early-maturing, high-yielding, drought tolerant, nutritious maize hybrid with orange grain that is biofortified with PVA and is NUE, resistant to GLS, TLB, Ear rots, and MSV, and bred for food use in tropical, rainfed, dry/wet mid-altitude and transition ecologies in southern Africa and similar agroecologies. It is notable for producing multiple ears per plant.    General Information
  Target region Southern Africa
  Adaptation/Agroecological zone < 1800 masl
  Type of product Three-way cross hybrid
  Year first announced 2024
     
      Grain Characteristics
Grain Yield   Grain color Orange
Grain yield under optimum conditions 8.52 t/ha   Grain texture Semi-flint
Grain yield under managed drought stress 1.56 t/ha   Provitamin A content  12 µg/g
Grain yield under low N stress 1.21 t/ha      
Grain Yield on-farm (severe stress*) 1.32 t/ha   Biotic Stress Performance
* The 2023/24 season in Southern Africa was characterized by the worst drought of the century, declared a national disaster in several countries. Many of the farmers participating in the trial reported write-offs.    Turcicum leaf blight (TLB) (1-9)* 3.77
  Grey leaf spot (GLS) (1-9)* 2.94
  Maize Streak Virus (MSV) (1-9)* 2.01
  Ear rots 2.4%
      *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.
Agronomic Characteristics  
Maturity group Early-maturing      
Days to 50% anthesis 69 DAP   Seed Production Characteristics
908 GDD   SC female parent yield  6.35 t/ha
Anthesis-silking interval 2.51 days   Male parent yield 2.4 t/ha
Plant height 221.3 cm   Nicking 2.0 days
Ear height 112.6 cm      
Ears per plant 1.24   Comments
Bad husk cover 8.9%   Product information is based on data from the CIMMYT Southern Africa 2022 Stage 4 and 2024 Stage 5 Trials.  Actual performance will vary depending on a number of agronomic and environmental factors.

Abbreviations:
DAP = Days after planting
GDD = Growing degree-days ˚ C
GLS = Grey Leaf Spot
Low N = managed low nitrogen stress
masl = meters above sea level
MSV = Maize Streak Virus
NUE = nitrogen-use efficient
opt. = optimum (44,444 plants per ha)
PVA = Provitamin A
SC = single-cross
TLB = Turcicum Leaf Blight (
E. turcicum)
Ear aspect (1-5)* 2.48  
Root lodging 5.3%  
*Ear aspect is scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics  
 
     
Further Links  
1. Full Product Announcement
(including trial results summary and site information)
 
 
 
2. Biofortified orange maize is as efficacious as a vitamin A supplement   
 
     
3. Provitamin A maize within the maize seed systems and grain value chain in Tanzania      
     
     
4. Zinc and provitamin A biofortified maize genotypes exhibited potent to reduce hidden hunger in Nepal      
     
     
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Tags
Region > Southern Africa
Product Type > Three-way cross hybrid
Abiotic Stress Tolerance > Drought tolerant
Abiotic Stress Tolerance > Nitrogen-use efficient (NUE)
Adaptation > Mid-altitudes
Biofortification > Provitamin A
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 > Orange grain
Grain Texture > Semi-flint
Maturity Group > Early maturing
Year announced > 2024
For Information, Contact:
Michael Omondi
Program Asst. – Maize Seed Systems and Technology Transfer
CIMMYT
M.OMONDI@cgiar.org

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