TABLE 5.
Responses (mortality) of resistant (Cry1Ac-SEL) and susceptible (ROTH) P. xylostella and their hybrid F1 progeny to Cry1Ac
| Population | LC50a (95% FL) | Avg slope (SE) | RRb | Dc | hd | ne |
|---|---|---|---|---|---|---|
| Cry1Ac-SEL F15 | 293 (198.3–620.70) | 2.30 (0.52) | 154,211 | 241 | ||
| ROTH | 0.0019 (0.0015–0.0025) | 3.91 (0.48) | 1 | 197 | ||
| F1e | 0.037 (0.0195–0.069) | 1.33 (0.18) | 19.47 | 0.49 | 0.75 | 240 |
| F1f | 0.085 (0.047–0.146) | 1.52 (0.20) | 44.74 | 0.36 | 0.68 | 240 |
a
These values are in micrograms per milliliter.
b
Resistance ratio (LC50 for selected population divided by LC50 for ROTH).
c
Degree of dominance = (2X2 − X1 − X3)/(X1 − X3), where X1, X2, and X3 are the log LC50s for the resistant homozygotes, heterozygotes, and susceptible homozygotes, respectively.
d
Estimate of dominance [h = (D + 1)/2].
e
F1 progeny of mass crosses between 40 females of ROTH and 40 males of Cry1Ac-SEL.
f
F1 progeny of mass crosses between 40 females of Cry1Ac-SEL and 40 males of ROTH.