Abstract:Four Datura stramonium L (abbreviated as D S in context) populations were selected in the pesent study for genetica analysis. The populations with the identical germ plasm virgin and different duration of exposure to the pollutants had continually grown in similar heavy metal polluted soils,including a control, CK, a short termed exposure S,a medium termed exposure M, and a long termed exposure L The seeds from the three D S populations (S, M, and L)as different treatments were planted...