Table 4.

Phytotoxic activity of the essential oils of C. × bergamia, C. × myrtifolia, C. limon against germination of R. sativus, L. sativa, S. lycopersium, L. sativum, L. multiflorum, and P. oleracea 120 h after sowing. Results are expressed as the mean of three experiments ± standard deviation.

	Germinated Seeds
	R. sativus	L. sativa	S. lycopersium	L. sativum	L. multiflorum	P. oleracea
C. × bergamia
CTR (H2O)	5.6 ± 1.5	9.0 ± 0.3	6.0 ± 0.5	7.7 ± 0.6	6.3 ± 0.6	5.6 ± 0.4
CTR (H2O + C3H6O)	5.6 ± 1.1	8.8 ± 0.2	6.2 ± 0.6	7.7 ± 0.6	8.7 ± 0.6	5.2 ± 0.8
100 μg/mL	3.0 ± 0.0	9.0 ± 0.0	5.0 ± 1.0	8.0 ± 1.0	7.6 ± 0.6	1.3 ± 1.6 *
10 μg/mL	4.0 ± 1.7	8.9 ± 0.2	5.3 ± 2.0	8.5 ± 0.7	6.3 ± 0.5	1.5 ± 1.2 *
1 μg/mL	3.4 ± 1.5	9.2 ± 1.2	4.6 ± 1.5	9.3 ± 1.1	6.3 ± 1.1	1.8 ± 1.3 *
0.1 μg/mL	4.6 ± 1.1	9.3 ± 0.7	7.6 ± 0.5	9.6 ± 0.6	7.0 ± 1.7	2.5 ± 2.7
C. × myrtifolia
CTR (H2O)	5.0 ± 1.0	9.0 ± 0.0	7.0 ± 1.3	9.7 ± 0.6	6.3 ± 1.5	5.0 ± 0.5
CTR (H2O+ C3H6O)	4.7 ± 1.0	9.7 ± 0.6	7.2 ± 1.5	8.6 ± 0.6	7.0 ± 1.0	5.2 ± 0.3
100 μg/mL	6.3 ± 2.5	10.0 ± 0.0	7.0 ± 2.0	7.7 ± 1.5	8.0 ± 1.7	0.4 ± 0.3 ***
10 μg/mL	4.7 ± 1.5	9.0 ± 0.0	5.0 ± 3.0	9.0 ± 1.0	7.3 ± 1.1	2.0 ± 1.8 *
1 μg/mL	6.3 ± 0.6	9.3 ± 1.1	6.7 ± 1.5	10.0 ± 0.0	8.0 ± 2.6	2.9 ± 0.4
0.1 μg/mL	5.7 ± 1.5	9.3 ± 0.6	6.0 ± 1.7	9.7 ± 0.6	7.7 ± 0.6	2.9 ± 1.4
C. limon
CTR (H2O)	9.7 ± 0.6	8.8 ± 0.3	10.0 ± 0.0	8.0 ± 0.0	8.3 ± 1.1	9.0 ± 1.4
CTR (H2O+ C3H6O)	7.0 ± 1.0	9.0 ± 0.0	9.3 ± 0.6	7.3 ± 1.2	8.3 ± 0.6	9.6 ± 0.6
100 μg/mL	7.7 ± 2.1	8.7 ± 0.4	9.6 ± 0.6	7.3 ± 0.6	9.3 ± 1.1	9.0 ± 1.0
10 μg/mL	8.0 ± 1.7	9.0 ± 1.1	9.3 ± 1.1	8.3 ± 1.1	9.3 ± 0.6	9.7 ± 0.6
1 μg/mL	6.3 ± 0.6 *	9.1 ± 1.3	9.7 ± 0.6	7.3 ± 1.5	9.7 ± 0.6	9.7 ± 0.6
0.1 μg/mL	8.0 ± 0.0	10.0 ± 0.0	10.0 ± 0.0	7.0 ± 1.0	9.7 ± 0.6	9.3 ± 0.6

* p < 0.05 compared with control. *** p < 0.001 compared with control.