Treatments

NC

PC

Black Dye Commercial Product Concentrations (mg/L)

1

10

100

1000

20 h

24.450 (0.009)

20.130 (0.009)

19.670 (0.010)

20.550 (0.009)

18.400 (0.011)

19.760 (0.010)

Recovery-48h

25.850 (0.014)

19.650 (0.009)

20.170 (0.012)

21.750 (0.015)

21.290 (0.011)

20.950 (0.009)

Recovery-72h

17.210 (0.013)

13.570 (0.013)

15.690 (0.015)

16.470 (0.015)

17.950 (0.010)

15.310 (0.015)

Note. NC. Negative Control; PC. Positive Control.
10,000 cells analyzed by concentration and treatment. Average (Standard Deviation)
The results didn’t present significant differences (p < 0,05), according to the Kruskal-Wallis test.

Table 1: Mitotic Indexes (MI) observed in A. cepa meristematic cells exposed to the different concentrations of the Black Dye Commercial Product, Negative Control Test (ultrapure water) and Positive Control Test (MMS), before and after recovery treatments.