Results in Table 2 and Fig. 3
showed that after 9 days, the growth of ryegrass was normal except
some black dots appeared on the root surface of ryegrass while aniline
concentration was below 100 mg/L. The leaf of ryegrass turned to yellow
and the culture solution turned to white when aniline concentration
was over 100 mg/L, and ryegrass under these treatments were
dead at the end.