Path analysis of grain yield and its components and estimation of heritability in barley

Authors

Abstract

This experiment was conducted using a Randomized Complete Block Design with Three ‎replications with 10 barley cultivars in Dryland Research Station of Northern Khorasan (Shirvan) ‎in 2004-2005 growing season. Results indicated that there was significant differences among the ‎lines in terms of the stand percentage, days to emergence, days to heading, days to maturity, plant ‎height, number of spikes per m2, number of seeds per spike, 1000 seed-weight and grain yield.
By mean of expected mean squares, genotypic and environmental variances were calculated. The ‎heritability of traits was estimated. In addition, correlation coefficients were calculated and path ‎analysis was done, Days to heading, days to maturity and 1000 grain-weight had the high level of ‎heritability. Because of the path analysis, number of seeds per spike had the direct effect on the ‎grain yield. The direct effect of 100 grain-weight on the grain yield was considered to be reduced ‎most probably due to indirect and negative effect of number of seeds per spike. ‎

Keywords