Article abstract

Journal of Agricultural and Crop Research

Research Article | Published January 2020 | Volume 8, Issue 1 pp. 11-19.

doi: https://doi.org/10.33495/jacr_v8i1.19.171

 

Genetic variability and association of traits in Ethiopian barley (Hordeum vulgare L.) genotypes at Holetta, Central Ethiopia

 


 

 

Tigist Shiferaw1*

Berhanu Abate2

Berhane Lakew1

 

Email Author

 

1. Holetta Agricultural Research Center, P. O. Box 2003, Holetta, Ethiopia. 
2. Hawassa University, School of Plant and Horticultural Sciences, P. O. Box 05, Hawassa, Ethiopia.


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Citation: Shiferaw T, Abate B, Lakew B (2020). Genetic variability and association of traits in Ethiopian barley (Hordeum vulgare L.) genotypes at Holetta, Central Ethiopia. J. Agric. Crop Res. 8(1):11-19.

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 Abstract 


Ethiopia is the secondary center for diversity of barley, and has a large number of accessions preserved in its gene bank. To determine the genetic variability and to assess the associations among morpho-agronomic characters, three hundred and twenty Ethiopian barley genotypes were evaluated in 2017 main-season at Holetta Agricultural Research Centre using 20 × 16 Alpha Lattice design. The analysis of variance showed that there were significant differences among the genotypes in all traits except for days to emergence, indicating the presence of genotypic variation among the studied genotypes. Out of 320, one hundred and twenty three genotypes gave significantly higher yield than the grand mean (2772.45 kg/ha) with yield advantage of best performing genotypes ranging between 145.98% for genotype Shege to 100.66% for genotype HB-1963. Grain yield, biomass yield and kernels per spike had high phenotypic and genotypic coefficients of variation. The estimates of broad sense heritability and genetic advance were high for days to heading and maturity and thousand kernels weight. Grain yield exhibited positive and highly significant correlations with days to heading and maturity, number kernels per spike, biomass yield, harvest index, thousand kernels and hectolitre weights. Path coefficient analysis revealed that biomass yield followed by seed harvest index had high and positive direct effects on grain yield and negative direct effect was exerted by days to heading and scald disease. Therefore, there is a high possibility of developing new varieties from these genotypes.

Keywords  Barley   character   genetic variability  

 

 

Copyright © 2020 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

 

 

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