Evaluation of the Phytotoxic and Genotoxic Potential of Pulp and Paper Mill Effluent Using Vigna radiata and Allium cepa

Table 4

Showing inhibition of root length and MI% in root tip cells of A. cepa following treatment with different concentrations of pulp and paper mill effluents.

Concentration (%)	Root length (cm)	Total cells	Dividing cells	MI%
0	11.8 ± 0.9	540 ± 20	372 ± 10	69 ± 0.9
25	9.1 ± 0.6	776 ± 41	244 ± 12	32 ± 0.4
50	9.0 ± 0.4	775 ± 36	206 ± 10	27 ± 0.5
75	6.6 ± 0.5	842 ± 20	186 ± 8	22 ± 0.7
100	3.9 ± 0.3	801 ± 20	91 ± 7	11 ± 0.5

Values are mean ± SD of three samples.  , significant when compared to control using ANOVA. MI was calculated as number of dividing cells × 100/number of total observed cells.