Yaregal And Firew

Yaregal and Firew

Greener Journal of
Agricultural Sciences

Vol. 8(12), pp. 332-350, 2018

ISSN: 2276-7770

Copyright ©2018, the
copyright of this article is retained by the author(s)

DOI Link: http://doi.org/10.15580/GJAS.2018.12.121018169





variability of improved maize varieties (Zea
L.) for acidic soil tolerance under contrasting environments in
Assosa, Ethiopia


Damtie1*, Firew Mekbib2


Assosa Agricultural Research center





Article No.: 121018169

Type: Research

DOI: 10.15580/GJAS.2018.12.121018169



Maize is the second most widely grown food
cereal crop cultivated in the world and consumed in various form of as part
of diets of human and animals. However, its production and productivity is
affected by biotic and abiotic stresses among which, soil acidity is the key
factor. This field experiment was conducted to estimate the genetic
variability of maize for yield and yield related traits, and determine the
association of traits with grain yield at Assosa and Bambasi districts
during the 2017main cropping season. The experiment consisted of limed and
unlimed soil as main plots and 21 maize varieties as the sub-plots arranged
in a split plot design with 3 replications. Highly significant (P<0.01)
differences were observed among maize varieties in yield and yield
related-traits at both locations. Moderate to high genotypic coefficient
variation, heritability and genetic advance as the percentage of mean values
were observed for stalk biomass, ear biomass, diameter and length, and grain
yield at both locations. Highly significant phenotypic and genotypic
correlations were observed between thousand seed weight and number of
kernels per row, thousand seed weight and ear diameter, and number of
kernels per row. The yield was highly significant and positively associated
with above stalk biomass, ear biomass, thousand seed weight, and number of
kernels per row at both locations at the genotypic and phenotypic level. The
phenotypic and genotypic correlation and path coefficient analysis of
harvesting index, above ground biomass, ear biomass, number of ears
harvested per plot, number of rows per ear, and ear length and these traits
also showed a direct effect on yield. The highest yield in t/ha was obtained
from variety BH547 (3.04) and (7.35) at Assosa and Bambasi, respectively.
Additionally, higher yield was recorded from SPRH1, BH661 and BH546
varieties at both locations. Therefore, farmers could use the above
varieties in the acidic soil until other advanced varieties are developed,
but the exact significant impact and duration of lime management in the
acidic soil for maize needs further investigations.


Submitted: 10/12/2018

Accepted:  14/12/2018

Published: 03/01/2019


*Corresponding Author


E-mail: yaregaldamtie@ gmail.com

Tel: (+251) 577-752451, 5777-524552

Fax: (+251)557-752453



coefficient;Yield;Yield components



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Cite this Article: Yaregal
D, Firew M (2018). Genetic variability of improved maize varieties (Zea mays L.) for acidic soil tolerance
under contrasting environments in Assosa, Ethiopia. Greener Journal of
Agricultural Sciences, vol. 8(12), 332-350,



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