Table 2.

Regression analysis on the contact toxicity of I. verum fruit extracts to M. persicae (72 h)

Extracts	Regression equation of toxicity	LC50 of extract (mg/l)	Relative coefficient (r)	95% confidence interval (mg/l)	Chi square (χ2)
MA extract	y = 0.91x + 5.47	0.31	0.9885	0.23–0.43	1.84
EA extract	y = 1.08x + 5.91	0.14	0.9806	0.10–0.19	0.58
PE extract	y = 1.03x + 5.59	0.27	0.9832	0.21–0.31	1.26