The nematicidal potentiality of some algal extracts and their role in enhancement the tomato defense genes against root knot - nematodes

Egyptian Journal of Biological Pest Control

Table 1 Effect of three marine algal extracts on egg hatchability and inhibition percentages (I%) of the root-knot nematode, Meloidogyne incognita under laboratory conditions

Treatments	Eggs hatching (%) Exposure time (days)
Treatments	3 days	I%	5 days	I%	7 days	I%
Control	21.60^a	0.0	36.20^a	0.0	52.60^a	0.0
Corallina mediterranea mg/ml
0.125	7.80^b	64	16.20^b	55.2	21.75^b	40.60
0.25	5.80^cd	73.1	13.00^cd	64	17.25^cd	34.60
0.5	5.20^de	76	12.20^de	66.2	15.75^de	48.40
1	5.00^de	76.8	12.00^de	66.8	15.25^de	70.20
Corallina officinalis mg/ml
0.125	6.80^bc	68.5	14.80^bc	59	19.50^bc	36.40
0.25	6.40^bcd	70.3	13.80^cd	61.8	18.25^cd	51.00
0.5	6.00^cd	72.2	13.60^cd	62.4	17.75^cd	55.60
1	5.60^cd	74	13.00^cd	64	16.75^cd	57.20
Ulva fasciata mg/ml
0.125	4.00^ef	81.4	10.40^ef	71.2	13.00^e	34.60
0.25	3.00^f	86	9.00^f	75	10.75^f	54.00
0.5	3.00^f	86	9.20^f	74.5	10.75^f	66.80
1	2.80^f	87	8.80^f	75.6	10.00^f	70.20
Oxamyl 5 μl/ml	0.20^g	99	0.80^g	97.7	1.40^g	97.3

Means followed by the same letter (s) are not significantly different by Duncan’s multiple range test (P ≤ 0.05)