This research was conducted at the Maize Research Department (Kharaboo) of General Commission of Science Agriculture Research (GCSAR), Damascus, Syria, during the growing seasons of 2009, 2010 ad, 2011 to study the genetic behavior of days to 50% silking, plant height, ear length, 100 grains weight and yield per plant by using generation mean analysis (GMA) of two individual hybrids of maize, to estimate the heritability, Phenotypic (PCV), and genotypic (GCV) coefficient variations and the genetic advance.