| This study was carried out at the Collage of Agriculture, Tikrit University through 2006- 2007, to investigate the effect of some physical factors in some quality characteristics of bread wheat Triticum aestivum L. aiming at supplementing some information regarding optimum safe storage conditions, as well as the ways of reducing losses during storage. Four moisture content levels (10,12, 14, and 16%) MC, and three storage periods (60, 120, and 180 days) used, samples stored in incubator at(28c.) in tightly polyethylene bags with three replicates .The traits studied included (germination percentage, 1000 kernel weight, and specific gravity), A factorial experiment in R.C.B.D was applied, using Duncan Multiple new Range Test (DMRT) at (p <0.05) for treatments means comparisons. The results obtained showed non- significant differences between all treatments at (10%, and 12%) MC, for all the studied traits, while significant differences between treatments stored at(14%,&16%)MC. was noted, showing high degradation in germination percentage, 1000 seed weight, and hectoliter weight by increasing of MC, and time of storage |