TABLE 2.
Dose-mortality responses and LD50s on day 8 postinoculation for HD-133 crystals and recombinant proteins fed to second-instar bertha armyworm larvae as determined by the droplet feeding assay
| Toxin type | LD50 (ng/larva)a | bb | Nc |
|---|---|---|---|
| HD-133 crystals | 367.8 (284–498) | 2.83 | 50/dose × 5 doses |
| Cry1Ab, activated | 29.8 (15–46) | 1.73 | 50/dose × 5 doses |
| Cry1C, activated | 45.3 (28–78) | 1.10 | 50/dose × 5 doses |
| Cry1D, activated | No dose response |
a
Values are means; numbers in parentheses are 95% confidence intervals.
b
b = slope of probit regression line.
c
N = numbers of individuals/dose × number of doses tested.