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

Table 3

Mean mitotic index of root tip cells of Allium cepa bulbs following exposure to water collected from study sites during rainy and dry seasons.

Site	Mitotic index (%)
	Rainy season	Dry season
Site A	26.4 ± 1.3	18.9 ± 4.1
Site B	29.8 ± 2.4	20.9 ± 3.7
Site C	31.5 ± 2.7^b	29.8 ± 5.0^b
Site D	48.5 ± 1.8^c	47.9 ± 4.2^c
Aged tap water	52.4 ± 5.8^c	55.6 ± 2.7^c

Data are represented as mean ± SD. Results indicated by different superscript letters in each column are significantly different from each other. Results indicated by different superscripts each row for site A and site B are significantly different from each other (ANOVA, Tukey’s test, , n = 10).