CIM21SAPP1-14

CIM21SAPP1-14 is a intermediate-maturing, white, high yielding, drought tolerant, NUE, and resistant to GLS, TLB, Ear rots, and MSV, bred for food use in tropical, rainfed, dry/wet mid-altitude and transition ecologies in southern Africa and similar agroecologies.     General Information   Target region Southern Africa   Adaptation/Agroecological zone 400-1800 masl   Type of product Three-way cross hybrid   Year first announced 2022           Grain Yield   Grain Characteristics Grain yield under optimum conditions 8.81 t/ha   Grain color White Grain yield under managed drought stress 3.37 t/ha   Grain texture Semi-dent Grain yield under low N stress 5.87 t/ha             Biotic Stress Performance Agronomic Characteristics   Turcicum leaf blight (TLB) (1-9)* 3.0 50% anthesis 896 GDD (°C)   Grey leaf spot (GLS) (1-9)* 2.5 Anthesis-silking interval 0.87 Days   Maize Streak Virus (MSV) (1-9)* 3.6 Plant height 254.3 cm   Ear rots 4.1% Ear height 125.5 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 2.7%       Ear aspect (1-5)* 2.5   Seed Production Characteristics Root lodging 2.3%   SC female parent yield 10.47 t/ha Stalk lodging 3.5%   Male parent yield 2.88 t/ha *Ear aspect is scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics   Nicking 3.97 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