In Algeria, Aleppo pine is a major forest tree by its surface and its importance in reforestation programs. Despite this, the species is not fully known especially in its genetic constitution and characteristics. In this study, 49 open pollinated families from the Aleppo pine stands in the area of Algiers were studied. Morphological and adaptive traits were investigated on one and two-year old seedlings. Results showed a relatively low differentiation among stands and, conversely, a significant variation between families within sands. Implications for the selection are discussed on account of climate changes.