CZH15550

CIMMYT's southern Africa product profile 1A (SAPP-1A) primarily focuses on developing high-yielding, intermediate-maturing maize hybrids with white grain, drought tolerance that are NUE and resistant to GLS, TLB, ear rots, and MSV, suitable 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 2018         Grain Characteristics   Grain color White       Grain texture Semi-flint Grain Yield       Grain yield ME-A 6.3 t/ha   Biotic Stress Performance (ME-A) Grain yield ME-B 8.3 t/ha   Turcicum leaf blight (TLB) (1-9)* 3.2 Grain yield ME-C 7.6 t/ha   Grey leaf spot (GLS) (1-9)* 3.2 Grain yield ME-D 5.4 t/ha   Common rust (P. sorg.) (1-9)* 2.2 Grain yield ME-E 5.4 t/ha   Maize Streak Virus (MSV) (1-9)* 1.0 Grain yield ME-F 9.0 t/ha   Ear rots 7.1% Grian yield under low N stress 2.8 t/ha   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.       Agronomic Characteristics (ME-A)       Maturity Intermediate   Seed Production Characteristics Days to 50% anthesis 67.2 days   Nicking -3 days Anthesis-silking interval 1.4 days   Feh:MphR 0.45 Plant height 222.3 cm       Ear height 104.4 cm   Comments Ears per plant 1.1   Product information is based on data from 2018 Southern Africa Maize Regional Trials conducted by CIMMYT. Actual performance will vary depending on a number of agronomic and environmental factors.

Abbreviations:
Feh:MphR = Female ear height to Male plant height ratio
GLS = Grey Leaf Spot
masl = meters above sea level
ME-A = Maize mega-environment A (wet upper mid-altitudes)
ME-B = Maize mega-environment B (wet lower mid-altitudes)
ME-C = Maize mega-environment C (dry mid-altitudes)
ME-D = Maize mega-environment D (wet lowlands)
ME-E = Maize mega-environment E (dry lowlands)
ME-F = Maize mega-environment F (highlands)
MSV= Maize Streak Virus
NUE = Nitrogen Use Efficient
TLB = Turcicum Leaf Blight (E. turc.) Bad husk cover 3.5%   Ear aspect (1-5)* 2.9   Root lodging 14.1%   Stalk lodging 1.1%   Senescence (1-10) 3.0   *Ear aspect is scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics           Further Links   1. Full Announcement and trial results     2. Maize Mega-Environments (map)