Chromosomal Abnormalities in Allium cepa Induced by Treated Textile Effluents: Spatial and Temporal Variations

Table 4

The spatial variation of phase index at the cell division phases of A. cepa bulbs exposed to composite water samples collected from different sites during the rainy season.

Site	Interphase index (‰)	Prophase index (‰)	Metaphase index (‰)	Anaphase index (‰)	Telophase index (‰)
A	736 ± 32^a	248 ± 42^a	5 ± 0.5^a	5 ± 0.5^a	3 ± 0.4^a
B	702 ± 38^a	288 ± 32^a	4 ± 0.2^a	4 ± 0.5^a	3 ± 0.2^a
C	685 ± 52^a	298 ± 32^a	6 ± 0.1^a	6 ± 0.5^a	4 ± 0.2^a
D	585 ± 45^b	400 ± 32^a	6 ± 0.1^a	2 ± 0.4^a	8 ± 0.1^b
Aged tap water	476 ± 15^b	500 ± 32^b	5 ± 0.1^a	6 ± 0.3^a	6 ± 0.2^b

Data are presented as mean ± SD. Mean values indicated by different superscript letters at each column are significantly different from each other (ANOVA, Tukey’s test, , n = 10). Site A: effluent discharge point, site B: 100 m downstream from site A, site C: 200 m downstream from site A, and site D: 100 m upstream from site A.