This research was carried out during 2010-2011 in Mosiaf rذegion. We selected and described seven types (sub cultivar) of the main cultivar in this region which is called Safrawi from three places Hazoor, Al Warraka and Wadi El Kawwas.
The fruit weight and pulp to pit ratio were studied in addition to calculate oil percentage in GCSAR laboratory by soxhlet, and the data were analyzed statistically by using Genstat 8 program in order to determine the least significant differences between them.
The results of the study point to the presence of the biodiversity among the tress of the cultivar Safrawi in Mosiaf according to its fruits weight, pulp/pit and oil percentage, even among types grow in the same place, the Type S5 have had the highest oil percentage (27%) so it is good for oil production whereas the type S3 had good traits in both fruit weight and pulp/pit ratio ( 7.03, 4.79g) so it is recommended as a table olive type.
From all above mentioned, arises the need for conserving these types in germplasms and consuming the evaluation of them by analyses its oil components and conducting biogenetic experiment to determine the genetic relationship among them .