Forty eight sorghum mutant lines were obitned from the third radiation generation (‘Mj) after gaqima irradia ijon treatment and ethvlamjne on Sorhiim bicolor cultivar Giza-I. These mutant hues were evaluated as well as the parenial cultivar Gira-1 (Yin M4,) generate (1990) to choose the best muيaui! lines for dry forage and grain yield. The results obtained rev’aled that considerable variation existed among genoi’rpes for all the studied ،rails. The mutan: lines No. 2, 15, 17, 21, 26, 28, 32 and 43 considered the bes: mutant for the fodder and grain yield.