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Abstract
Five Faba bean genotypes and their Ft hybrids (through half diallel crosses analysis)
were grown under saline and non-saline conditions. Results showed that: growth and
yield characters decreased with increasing salinity levels compared with control. Both
additive and dominance gene effects were involved in controlling these characters under
all treatments. Moderate or high narrow-sense heritability estimates (n. s.) were
observed for shoot length, root fresh weight, number of flower/plant ,pod length and
100 seeds weight under different salinity treatment. High salinity levels led to more
increasing of osmotic pressure, the dominance component mainly control under all
treatments, and low values of (n.s.) were obtained under all treatments .chlorophyll A &
B decreased with increasing salinity levels and Low to moderate (n.s.) . Increasing
salinity levels led to decreasing of the contents of N, P and K elements in both shoot
and root but the Na content was increased .Dominance gene effects is mainly control N
shoot content under control, K shoot content under all treatments, K root content under
5000ppm and Na shoot under 1000ppm. Both additive and dominance gene effects were
involved in controlling all rest characters , over dominance was observed for all
characters except P shoot content under 1000 and 5000ppm , low to moderate(n.s.) for
all characters except K root under SOOOppm,K shoot and P root under control which
were very low. The esterase isozyme banding patterns revealed that the number and
intensities of bands increased with increasing salinity levels, while MDH Isozyme
showed unstability for the number of bands with increasing salinity.