Table 3.
Results of pyrethroid leaf-dip bioassays on M. persicae progeny clones representing all observed progeny genotypes. (EC50, effective concentration to give 50% dead or with irreversible symptoms of poisoning. Values followed by the same letter do not differ significantly (p<0.05). 95% CI, 95% confidence interval; RF (resistance factor)=EC50 for clone/EC50 for 800F. L and F refer to the L1014F mutation and M and T to the M918T mutation.)
| cross | progeny genotypes | EC50 (ppm) | 95% CI | slope | RF |
|---|---|---|---|---|---|
| 800F♂×800F♀ | LM/LM | 0.73a | 0.23–1.73 | 0.65 | 1.10 |
| 800F♂×2169G♀ | LM/LM | 0.88ab | 0.37–1.84 | 0.81 | 1.30 |
| FT4/LM | 341c | 125–624 | 0.61 | 517 | |
| 800F♂×108T♀ | LM/LM | 0.75a | 0.27–1.67 | 0.73 | 1.13 |
| FM/LM | 4.20b | 1.74–9.48 | 0.67 | 6.0 | |
| 2169G♂×2169G♀ | FT/LM | 307c | 97.3–1985 | 0.51 | 465 |
| 2169G♂×108T♀ | LM/LM | 0.76ab | 0.25–1.76 | 0.67 | 1.15 |
| FM/LM | 3.36ab | 0.91–9.47 | 0.57 | 5.0 | |
| FT/LM | 315c | 95.2–2375 | 0.48 | 477 | |
| FT/FM | 463c | 124–5173 | 0.45 | 702 |