The six populations i.e., P 1 , P 2 , F 1 , F 2 , BCI and BCII of the three crosses (Sids 4 x Sids 1) (Sids 1x Giza 168) and (Giza 168x Gemmeiza 9) were used to estimate genetic variance, gene action, heterosis, inbreeding depression, heritability and genetic advance for the days to heading, days to maturity and plant height as well as yield and its components traits. The experiment was conducted at Sids Agric. Res. Stan. (Beni suef governorate) during the three successive growing