The fourth fillial generation with their parents p1 and p2 for four crosses in
six row barley (Hordium vulgare L.): Jezera1 x Badya, Tadmer x Arivat,
Rehan x Bendict and Rum x Forest. The seeds were planted in 2007 using
R.C.B.D. with four replica
tions. The data were recorded for the traits; maturity
time, number of spikes, spike length, grain yield, weight of 1000 grains and
number of grains per spike, to estimate average degree of dominance,
heritability and expected genetic advance from selection.. The results showed
that over dominance were presence for the studied traits. The values of broad
sense heritability were high for the studied traits in the all crosses. The values
of narrow sense heritability were (1) high for number of spikes in the all
crosses, maturity time, grain yield and spike length in the second and fourth
crosses and weight of 1000 grains in the second cross(2) low for the weight of
1000 grains and number of grains per spike in the fourth cross.(3) moderately
for the other traits. The results of this study indicated that selection will be
effective to obtain superior strains in the four crosses for the studied traits
except spike length and weight of 1000 grains in the second cross. Therefore
recurrent selection will be suggested to increase the desirable genes.