Table 2.
Mitotic index and chromosomal aberrations in Allium cepa root tip cells exposed to increasing concentrations of Butylated hydroxytoluene and Butylated hydroxyanisole after 5 days treatment.
| Treatment group | Conc.(ppm) | Total cells | Total mitosis | MI (mean ± S.E) | % of chromosomal abnormalities (mean ± S.E) |
|---|---|---|---|---|---|
| BHT | control | 512.67 ± 1.45 | 314.00 ± 7.02 | 61.26 ± 1.50d | 0.32 |
| 1000 | 506.33 ± 2.03 | 223.33 ± 2.85 | 44.11 ± 0.59c | 9.86 | |
| 1500 | 513.33 ± 2.91 | 213.67 ± 0.88 | 41.62 ± 0.16b | 10.92 | |
| 2000 | 519.33 ± 1.20 | 208.67 ± 3.28 | 40.18 ± 0.55a | 15.49 | |
| 2500 | 507.67 ± 1.76 | 203.33 ± 1.67 | 40.08 ± 0.44a | 18.36 | |
| BHA | control | 518.00 ± 3.46 | 267.77 ± 7.62 | 51.66 ± 1.13e | 0.25 |
| 1000 | 536.00 ± 1.73 | 226.33 ± 2.85 | 42.23 ± 0.65d | 12.52 | |
| 1500 | 525.33 ± 2.91 | 200.67 ± 3.71 | 38.18 ± 0.62c | 16.80 | |
| 2000 | 533.33 ± 2.40 | 184.67 ± 4.91 | 35.16 ± 1.06b | 17.51 | |
| 2500 | 507.67 ± 1.76 | 171.67 ± 6.01 | 32.20 ± 1.25a | 22.34 |
mi-mitotic index.
aMeans with the same letters do not significantly differ at 0.05 level (Duncon's test).