International Journal of
Biodiversity and Conservation

  • Abbreviation: Int. J. Biodivers. Conserv.
  • Language: English
  • ISSN: 2141-243X
  • DOI: 10.5897/IJBC
  • Start Year: 2009
  • Published Articles: 592

Article in Press

STUDY OF GENETIC AND TRAIT ASSOCIATIONS FOR YIELD AND YIELD CONTRIBUTING TRAITS IN TWO-ROWED BARLEY (HORDEUM VULGARE L) LANDRACES IN WESTERN OROMIA, ETHIOPIA

Geleta Negash, Dagnachew Lule and Zerihun Jaleta

  •  Received: 03 December 2018
  •  Accepted: 25 January 2019
The aim of this study was to find out variability, heritability, and genetic advance and trait associations for some yield and yield related traits in Ethiopian two-rowed barley. Forty-nine, two-rowed barley landraces were tested in 7 x 7 simple lattice designs with two replications during the 2017 cropping season at the Mata research sub site of Haro Sabu Agricultural Research Center (HSARC). A variance component analysis method was used to estimate variability, broad sense heritability, genetic advance and trait associations of yield and some yield related characters. Statistically, high significant (p < 0.01) variation was observed among materials tested for important quantitative traits indicating the presence of variability. Moreover, Phenotypic Coefficient of Variability (PCV) and Genotypic Coefficient of Variability (GCV) were relatively higher for length of rachilla hair (55.73 %, 27.86 %), flag leaf width (72.24 %, 62.22 %), grain weight per spike (48.56 %, 23.60 %), spike weight per plant (55.54 %, 43.47 %) and biological yield (23.86 %, 21.20 %) respectively. Relatively high heritability was obtained for days to heading (91.03 %), days to maturity (90.38 %), plant height (91.50 %), number of spikelets per spike (89.04 %) and harvest index (80.62 %) showing better condition for effective selection in these characters. This implies the presence of more additive gene effects for potential crop improvement. Beside this, high genetic advance as percent of mean was observed for number of spikelets per spike (38.60 %) and harvest index (23. 61 %). Grain yield exhibited positive and significant correlation with most of the characters. Biological yield and harvest index excreted positive direct effect on grain yield. Generally, this study revealed greater yield response could be obtained through direct selection scheme in barley landraces tested

Keywords: Barley (Hordeum vulgare L.) Correlations, Genetic advance, Heritability, Variability