TABLE 3.
Susceptibility of LAB-V and ROTH strains of P. xylostella to several Cry1 proteins in the B2 bioassay
| Protein | Resulta for the following strain:
|
Toxicity ratio (LC50 for LAB-V/LC50 for ROTH) | |||||
|---|---|---|---|---|---|---|---|
| LAB-V
|
ROTH
|
||||||
| LC50 | FL95 | Slope ± SEb | LC50 | FL95 | Slope ± SE | ||
| Cry1Aa | 2.72 | 1.97–4.62 | 1.21 ± 0.15 | 0.160 | 0.100–0.290 | 0.95 ± 0.12 | 17 |
| Cry1Ab | 0.14 | 0.08–0.24 | 0.95 ± 0.12 | 0.002 | 0.000–0.005 | 0.74 ± 0.23 | 70 |
| Cry1Ac | 0.17 | 0.09–0.47 | 1.06 ± 0.21 | 0.001 | 0.001–0.002 | 1.61 ± 0.30 | 170 |
| Cry1Ca | 1.00 | 0.74–1.49 | 1.11 ± 0.14 | 0.030 | 0.006–0.059 | 1.79 ± 0.60 | 33 |
| Cry1Da | 15.21 | 12.15–19.19 | 1.05 ± 0.35 | 0.270 | 0.180–0.290 | 1.01 ± 0.19 | 56 |
a
Values are given in milligrams per liter.
b
Slope of the regression line obtained by probit analysis, and standard error.