Yield variability of breadwheat under wheat stem rust pressure at bore field condition of Southern Oromia
Tolessa Taye, Chemada Fininsa and Getaneah Woldeab
Research Paper I Published April,2015
Journal of Agricultural Science and Food Technology
ABSTRACT
Eleven bread
wheat cultivars were evaluated along with one susceptible
local cultivar as control for field variation under wheat
stem rust pressure during the main cropping season of
2011/12 at Bore Agricultural Research Station. The maximum
wheat stem rust severity was recorded from the local
cultivar (93.6%). Disease severity ranged from 0% for highly
resistant cultivar (ETBW 5496) to 93.6% for susceptible
cultivar. Cultivar with high disease severity and area under
disease progress curve gave the lowest grain yield.
Cultivars with low disease severity gave higher yield
compared to the susceptible cultivars. Digalu gave higher
mean grain yield (7.3 t ha–1) followed by Danda`a (6.26 t
ha–1) with disease severity values of 56% and 48%
respectively. Galema had higher disease pressure of 79% with
lower mean grain yield of (1.15 t ha–1). Shorima, Kakaba,
ETBW13A2, and ETBW5496 had better yield and lower stem rust
severity and were recommended for cultivation under moderate
stem rust infestation.
Key words: wheat Stem Rust, yield variability, bore.
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