using a newly developed plating system , we have measured cell survival and the frequencies of variation in an inherited trait after treatment of soybean cell suspensions with different mutagens : ethyl methanesulfonate ( ems ) , methyl methanesulfonate ( mms ) , n-methyl-n'-nitro-n-nitroso-guanidine ( mnng ) , hycanthone ( 1- { [ 2- ( diethylamino ) ethyl ] amino } -4- ( hydroxymethyl ) -9h-thioxanthen-9-one and ultraviolet light ( uv ) .-the heritable variation selected for displays a phenotype of rapid growth on maltose as carbon source .
C0007620
cell survival
C0007634
cell