CKH12602

 

CIMMYT's eastern Africa product pipeline 1B (EA-PP1B) focuses on developing high-yielding, early maturing maize varieties with white grain, drought tolerance, NUE, and resistance to GLS, TLB, and ear rots, that are suitable for food use in tropical, rainfed, dry, mid-altitude areas in eastern Africa and similar agroecologies.    General Information   Adaptation/Agroecological zone 1000 - 1600 masl   Type of product Three-way cross hybrid   Year first announced 2017         Grain Characteristics   Grain color White       Grain texture Flint Grain Yield       Grain yield under optimum conditions 9.9 t/ha   Biotic Stress Performance Grain yield under high density 8.8 t/ha   Turcicum leaf blight (TLB) (1-9) 4.8 Grain yield under random stress 5.7 t/ha   Grey leaf spot (GLS) (1-9) 3.6 Grain yield under low N stress 3.8 t/ha   Common rust (1-9) 2.8 Grain yield under striga conditions 3.4 t/ha   Maize lethal necrosis (MLN) under art. inoc. (1-9) 4.2       Ear rots 3.2% Agronomic Characteristics   Diseases were originally scored on a 1-5 scale but have been converted here to a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. Maturity 105 DAP   Plant height 215.9 cm   Ear height 103.6 cm       Bad husk cover 7.7%   Seed Production Characteristics Root lodging 2.3%   Nicking 0 Days Stalk lodging 9.5%       Anther-silking interval 1.3 Days   Comments Ear aspect (1-5) 2.5   Product information is based on data from various trials conducted by CIMMYT in eastern Africa in 2016.

Abbreviations:
art. inoc. = artificial inoculation
DAP = days after planting
GLS = Grey Leaf Spot
HD = High Density (80,000 plants per ha)
Low N = Managed Low Nitrogen
masl = meters above sea level
MSV = maize streak virus
NUE = Nitrogen Use Efficient
TLB = Turcicum Leaf Blight Plant aspect (1-5) 2.3   Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics           Further Links   Full Announcement   Trial Data Summary   Regional Trial Site Information