Table 2.
Bioassay of different ratios of Cry6Aa‐Cry55Aa toxin mixtures against Meloidogyne incognita J2.
| Cry6Aa : Cry55Aa | Toxicity (µg ml−1) | Synergistic factor | |
|---|---|---|---|
| LC50a (observed) | LC50 (expected)b | ||
| 1:0 | 383.42 (266.54–551.57) | – | – |
| 0:1 | 102.57 (76.33–137.84) | – | – |
| 1:5 | 49.43 (38.10–64.14) | 119.91 | 2.43 |
| 1:2 | 37.45 (22.37–74.66) | 135.27 | 3.61 |
| 1:1 | 32.14 (24.60–41.97) | 160.65 | 5.00 |
| 2:1 | 50.87 (35.17–72.55) | 201.42 | 3.96 |
| 5:1 | 74.29 (58.89–93.73) | 243.31 | 3.28 |
a.
95% fiducial limits determined by probit analysis are given in parentheses.
b.
Expected LC50 values were calculated using the equation of Tabashnik (1992).