Table 1.
Lethal concentrations of five Bacillus thuringiensis toxins to Ostrinia furnacalis, Conogethes punctiferalis, Agrotis ypsilon, Mythimna separata, Helicoverpa armigera.
| Insect species | Bt Toxin | na | Slope(±SE) | LC50(95%FL)b | LC90(95%FL)b | χ2c | df |
|---|---|---|---|---|---|---|---|
| Ostrinia furnacalis | Cry1Ab | 432 | 1.62 ± 0.17 | 2.11(1.64–2.62) | 13.06(9.53–20.38) | 7.77 | 4 |
| Cry1Ac | 432 | 1.64 ± 0.19 | 1.70(1.25–2.19) | 10.29(7.49–16.26) | 7.27 | 5 | |
| Cry1F | 432 | 1.43 ± 0.19 | 4.61(3.48–6.04) | 36.52(22.67–78.80) | 9.13 | 4 | |
| Cry2Ab | 504 | 1.39 ± 0.14 | 134.87(104.77–171.34) | 1127.83(762.33–1957.88) | 10.62 | 5 | |
| Vip3A | 576 | 0.51 ± 0.09 | 328.44(183.99–660.54) | 104243.05(20067.75–2669993.94) | 9.27 | 6 | |
| Conogethes punctiferalis | Cry1Ab | 432 | 1.09 ± 0.16 | 3.41(2.20–4.96) | 50.62(27.56–137.89) | 8.54 | 4 |
| Cry1Ac | 504 | 1.27 ± 0.11 | 8.62(6.90–11.02) | 87.43(55.88–161.90) | 8.27 | 5 | |
| Cry1F | 504 | 1.25 ± 0.17 | 10.03(6.79–14.26) | 107.17(62.39–251.50) | 3.93 | 5 | |
| Cry2Ab | 504 | 1.12 ± 0.16 | 126.70(83.81–180.59) | 1762.68(961.45–4919.07) | 10.92 | 5 | |
| Vip3A | 576 | 0.95 ± 0.10 | 406.36(291.52–584.47) | 9158.11(4643.12–25184.36) | 6.48 | 6 | |
| Helicoverpa armigera | Cry1Ab | 432 | 1.24 ± 0.16 | 3.52(2.62–4.66) | 48.27(22.85–223.72) | 9.36 | 4 |
| Cry1Ac | 504 | 1.07 ± 0.14 | 7.33(5.34–10.12) | 191.10(86.45–753.18) | 8.56 | 5 | |
| Cry1F | 576 | 1.40 ± 0.12 | 1513.22(1206.02–1887.17) | 12497.37(8724.82–20238.11) | 9.47 | 7 | |
| Cry2Ab | 360 | 1.04 ± 0.14 | 70.39(39.47–106.65) | 1210.81(724.61–2678.95) | 9.51 | 6 | |
| Vip3A | 576 | 0.98 ± 0.11 | 468.07(333.76–649.50) | 9619.37(5322.10–2295.92) | 11.17 | 6 | |
| Agrotis ypsilon | Cry1Ab | 480 | 1.84 ± 0.34 | 762.61(530.76–1006.73) | 3779.38(2477.67–8473.58) | 10.73 | 6 |
| Cry1Ac | 480 | 1.33 ± 0.12 | 1090.42(855.09–1381.42) | 10022.41(7194.69–82230.30) | 11.87 | 6 | |
| Cry1F | 720 | 0.68 ± 0.07 | 1027.84(695.06–1544.08) | 79361.96(33296.01–290783.82) | 12.66 | 8 | |
| Cry2Ab | 420 | 1.348 ± 0.13 | 367.38(279.49–466.63) | 3352.74(2337.07–5521.13) | 10.83 | 5 | |
| Vip3A | 504 | 1.32 ± 0.14 | 352.81(273.79–453.77) | 3287.45(2095.47–6375.52) | 8.23 | 5 | |
| Mythimna separata | Cry1Ab | 432 | 1.01 ± 0.15 | 119.24(82.90–164.50) | 2250.03(1152.64–7167.31) | 5.36 | 4 |
| Cry1Ac | 480 | 0.61 ± 0.10 | 132.25(67.50–217.81) | 16821.22(5669.80–128957.09) | 9.04 | 6 | |
| Cry1F | 624 | 0.84 ± 0.09 | 812.18(564.24–1141.42) | 27304.07(14350.18–69978.33) | 8.74 | 7 | |
| Cry2Ab | 432 | 1.57 ± 0.18 | 379.21(293.81–480.88) | 2487.17(1691.91–4415.81) | 4.73 | 4 | |
| Vip3A | 480 | 0.98 ± 0.11 | 336.61(237.57–467.64) | 6744.22(3812.70–15452.58) | 6.18 | 6 |
atotal number of larvae tested in the bioassay.
bng of Bt toxin/cm2 of treated artificial diet surface with 95% fiducial limits in parentheses.
cChi-square goodness-of-fit test indicates all probit models were good fit (P > 0.05).