Molecular characterization and toxicity evaluation of indigenous Bacillus thuringiensis isolates against key lepidopteran insect pests

Gothandaraman, Rajadurai; Venkatasamy, Balasubramani; Thangavel, Tamilnayagan; Eswaran, Kokiladevi; Subbarayalu, Mohankumar

doi:10.1186/s41938-022-00639-y

Egyptian Journal of Biological Pest Control

Table 5 Toxicity of indigenous Bt isolates against Lepidopteran pests

From: Molecular characterization and toxicity evaluation of indigenous Bacillus thuringiensis isolates against key lepidopteran insect pests

Sl. No	Bt isolates	Larval mortality (%) 72 h after treatment (20 µg/ml)
Sl. No	Bt isolates	P. xylostella	H. armigera	S. litura	S. frugiperda
1	T7	96.67 (79.49)^ab	60.00 (50.77)^e	56.67 (48.83)^ef	70.00 (56.79)^cd
2	T9	0.00 (0.52)^m	0.00 (0.52)ⁱ	0.00 (0.52)^o	13.33 (21.41)^hi
3	T10	100.00 (90.00)^a	83.33 (65.90)^d	53.33 (46.91)^ef	3.33 (10.51)^kl
4	T17	100.00 (90.00)^a	96.67 (79.49)^b	63.33 (52.73)^de	20.00 (26.56)^gh
5	T28	100.00 (90.00)^a	100.00 (90.00)^a	90.00 (71.56)^b	90.00 (71.56)^b
6	T29	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a
7	T30	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a
8	T31	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a
9	T47	56.67 (48.83)^d	20.00 (26.56)^f	36.67 (37.27)^hi	13.33 (21.42)^hi
10	T48	13.33 (21.41)^ghijk	50.00 (45.00)^e	40.00 (39.23)^gh	0.00 (0.52)^l
11	T49	20.00 (26.56)^ghi	6.67 (14.97)^gh	36.67 (37.27)^hi	0.00 (0.52)^l
12	T55	0.00 (0.52)^m	16.67 (24.10)^f	16.67 (24.10)^jkl	23.33 (28.88)^g
13	T56	0.00 (0.52)^m	0.00 (0.52)ⁱ	13.33 (21.41)^klm	6.67 (14.95)^jk
14	T58	10.00 (18.43)^ijk	0.00 (0.52)ⁱ	10.00 (18.43)^lm	10.00 (18.43)^ij
15	T59	33.33 (35.26)^ef	0.00 (0.52)ⁱ	13.33 (21.41)^klm	16.66 (24.09)^ghi
16	T60	13.33 (21.41)^ghijk	3.33 (10.51)^h	0.00 (0.52)^o	0.00 (0.52)^l
17	T61	26.66 (31.09)^efg	6.67 (14.97)^gh	3.33 (10.51)^no	13.33 (21.41)^hi
18	T62	26.66 (31.09)^efg	0.00 (0.52)ⁱ	3.33 (10.51)^no	6.67 (14.96)^jk
19	T63	3.33 (10.51)^lm	6.67 (14.97)^gh	13.33 (21.41)^klm	10.00 (18.43)^ij
20	T67	20.00 (26.56)^fghij	10.00 (18.43)^hi	10.00 (18.43)^lm	6.67 (14.96)^jk
21	T69	13.33 (21.41)^hijk	0.00 (0.52)ⁱ	0.00 (0.52)^o	0.00 (0.52)^l
22	T71	13.33 (21.41)^ghijk	10.00 (18.43)^fg	16.67 (24.10)^klm	16.66 (24.09)^ghi
23	T73	10.00 (18.43)^ijk	10.00 (18.43)^fg	0.00 (0.52)^o	3.33 (10.51)^kl
24	T74	10.00 (18.43)^jkl	0.00 (0.52)ⁱ	3.33 (10.51)^no	0.00 (0.52)^l
25	T76	23.33 (28.88)^fgh	13.33 (21.41)^fg	3.33 (10.51)^no	0.00 (0.52)^l
26	T77	6.66 (14.96)^kl	3.33 (10.51)^hi	0.00 (0.52)^o	0.00 (0.52)^l
27	T78	30.00 (33.21)^ef	16.67 (24.10)^f	0.00 (0.52)^o	6.67 (14.96)^jk
28	T79	13.33 (21.41)^ghijk	13.33(21.41)^fg	26.67 (31.09)^ij	6.67 (14.96)^jk
29	T81	73.33 (58.91)^c	13.33 (21.41)^fg	10.00 (18.43)^lm	6.67 (14.96)^jk
30	T82	53.33 (46.91)^d	16.67 (24.10)^f	6.67 (14.96)^mn	0.00 (0.52)^l
31	T83	13.33 (21.41)^ghijk	0.00 (0.52)ⁱ	6.67 (14.96)^mn	3.33 (10.51)^kl
32	T220	100.00 (90.00)^a	100.00 (90.00)^a	76.67 (61.18)^c	60.00 (50.77)^de
33	T250	100.00 (90.00)^a	100.00 (90.00)^a	76.67 (61.18)^c	56.67 (48.83)^e
34	T353	100.00 (90.00)^a	100.00 (90.00)^a	73.33 (58.91)^cd	63.33 (52.73)^cde
35	T355	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a	90.00 (71.56)^b
36	T357	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a
37	T381	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a
38	T385	0.00 (0.52)^m	0.00 (0.52)ⁱ	13.33 (21.41)^klm	3.33 (10.51)^kl
39	T386	100.00 (90.00)^a	100.00 90.00)^a	50.00 (45.00)^fg	23.33 (28.88)^g
40	T387	93.33 (75.03)^b	93.33 (75.03)^c	63.33 (52.73)^de	40.00 (39.23)^f
41	T388	100.00 (90.00)^a	100.00 90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a
42	T389	96.67 (79.49)^ab	50.00 (45.00)^e	83.33 (65.90)^bc	73.33 (58.91)^c
43	T390	30.00 (33.21)^ef	16.67 (24.10)^f	6.67 (14.97)^mn	43.33 (41.17)^f
44	T392	40.00 (39.23)^de	0.00 (0.52)ⁱ	20.00 (26.56)^jk	3.33 (10.51)^kl
45	T393	0.00 (0.52)^m	0.00 (0.52)ⁱ	0.00 (0.52)^o	0.00 (0.52)^l
46	T395	0.00 (0.52)^m	3.33 (10.51)^hi	6.67 (14.97)^mn	0.00 (0.52)^l
47	T396	3.33 (10.51)^lm	0.00 (0.52)ⁱ	6.67 (14.97)^mn	3.33 (10.51)^kl
48	T397	13.33 (21.41)^ijk	0.00 (0.52)ⁱ	3.33 (10.51)^no	0.00 (0.52)^l
49	T398	23.33 (28.88)^fgh	6.67 (14.97)^gh	6.67 (14.97)^mn	0.00 (0.52)^l
50	T399	6.66 (14.96)^kl	13.33 (21.41)^fg	13.33 (21.41)^mn	0.00 (0.52)^l
51	HD-1	100.00 (90.00)^a	100.00 90.00)^a	100.00 (90.00)^a	100.00 (90.00)^a
52	Control	0.00 (0.52)^m	0.00 (0.52)ⁱ	0.00 (0.52)^o	0.00 (0.52)^l
SEd		4.9779	4.1682	3.8622	3.7000
CD (0.05)		9.8720	8.2662	7.6593	7.3377

Figures in parentheses are arcsine transformed values of percentages. Values followed by the same letters in a column are not significantly different (p = 0.05) by DMRT

Back to article page