Table 6.
Percent inhibition of enzyme activity in Culex quinquefasciatus larvae using different concentrations of Bti at 30% concentrations.
| Plants | Concentration | AChE | AcP | AkP | α-Carboxyl | β-Carboxyl |
|---|---|---|---|---|---|---|
| Z1 | 50 ppm | 14.85 ± 2.83 a | 14.90 ± 1.75 a | 8.35 ± 1.08 a | 30.01 ± 2.02 a | 26.65 ± 2.23 a |
| 100 ppm | 31.14 ± 3.36 b | 21.07 ± 1.43 b | 12.95 ± 0.78 a | 52.80 ± 3.01 b | 43.87 ± 3.34 b | |
| 250 ppm | 52.94 ± 2.43 c | 32.02 ± 1.14 c | 21.01 ± 1.57 b | 63.88 ± 1.67 c | 46.91 ± 3.08 b | |
| F, df and P value | (F = 92.99; df = 2; P < 0.05) | (F = 32.03; df = 2; P < 0.05) | (F = 24.56 df = 2; P < 0.05) | (F = 78.92; df = 2; P < 0.05) | (F = 23.02; df = 2; P < 0.05) | |
| Z2 | 50 ppm | 17.83 ± 2.3 a | 15.77 ± 1.43 a | 8.87 ± 1.16 a | 24.08 ± 2.13 a | 26.13 ± 3.38 a |
| 100 ppm | 31.12 ± 3.32 b | 20.97 ± 1.03 b | 12.91 ± 0.93 b | 33.10 ± 4.11 a | 39.78 ± 3.03 b | |
| 250 ppm | 59.95 ± 2.47 c | 29.98 ± 1.23 c | 26.08 ± 0.69 c | 45.04 ± 3.513b | 51.01 ± 2.57 b | |
| F, d.f and P value | (F = 90.86; df = 2; P < 0.05) | (F = 38.79; df = 2; P < 0.05) | (F = 128.87; df = 2; P < 0.05) | (F = 13.05; df = 2; P < 0.05) | (F = 14.03; df = 2; P < 0.05) | |
| Z3 | 50 ppm | 11.93 ± 2.69 a | 19.61 ± 1.38 a | 9.49 ± 1.19 a | 22.93 ± 2.82 a | 16.18 ± 3.74 a |
| 100 ppm | 24.03 ± 2.59 b | 21.83 ± 1.68 a | 16.09 ± 1.39 b | 36.15 ± 3.08 b | 36.24 ± 3.49 b | |
| 250 ppm | 48.78 ± 1.82 c | 28.16 ± 1.24 b | 25.02 ± 1.29 c | 47.13 ± 3.39 c | 47.04 ± 2.52 b | |
| F, d.f and P value | (F = 59.57; df = 2; P < 0.05) | (F = 12.89; df = 2; P < 0.05) | (F = 39.94; df = 2; P < 0.05) | (F = 23.29; df = 2; P < 0.05) | (F = 23.31; df = 2; P < 0.05) | |
| Z4 | 50 ppm | 20.67 ± 2.87 a | 19.96 ± 1.49 a | 11.03 ± 1.49 a | 28.49 ± 2.59 a | 22.03 ± 4.87 a |
| 100 ppm | 27.79 ± 2.39 a | 23.21 ± 1.54 b | 13.48 ± 1.58 a | 45.08 ± 2.78 b | 35.03 ± 3.61 ab | |
| 250 ppm | 51.14 ± 2.78 b | 29.08 ± 1.29 c | 24.98 ± 1.38 b | 47.68 ± 3.71 b | 49.69 ± 3.89 b | |
| F, d.f and P value | (F = 45.89; df = 2; P < 0.05) | (F = 42.39; df = 2; P < 0.05) | (F = 33.54; df = 2; P < 0.05) | (F = 12.89; df = 2; P < 0.05) | (F = 11.23; df = 2; P < 0.05) | |
| Z5 | 50 ppm | 20.69 ± 2.03 a | 18.07 ± 1.08 a | 10.17 ± 0.74 a | 37.93 ± 2.11 a | 31.01 ± 2.93 a |
| 100 ppm | 38.76 ± 3.06 b | 23.29 ± 1.39 b | 15.34 ± 0.74 b | 58.17 ± 2.89 b | 48.16 ± 3.04 b | |
| 250 ppm | 54.68 ± 1.35 c | 34.28 ± 1.13 c | 24.58 ± 1.14 c | 71.08 ± 3.03 c | 59.96 ± 1.68 c | |
| F, d.f and P value | (F = 59.24; df = 2; P < 0.05) | (F = 47.87; df = 2; P < 0.05) | (F = 51.02; df = 2; P < 0.05) | (F = 52.23; df = 2; P < 0.05) | (F = 31.07; df = 2; P < 0.05) |
Convulvulus arvensis (Z1), Chenopodium murale (Z2), Tribulus terrestris (Z3), Trianthema portulacastrum (Z4) and Achyranthes aspera (Z5).
AChE = acetylcholinesterase, AcP = acid phosphatases, AkP = alkaline phosphatases, α-Carboxyl = α-Carboxylesterases and β-Carboxyl = β-Carboxylesterases.
Means sharing the same letter within each treatment is not statistically different.