Table 1.
Measurement of toxicity of Alternaria alternata toxin extracted from strain 7484 to Macrosiphum rosivorum aphids with slide-dipping method
| Toxin concentration (μg/ml) | Mortality of aphids (%)a |
Pc | |
| Toxin | Controlb | ||
| 10.00 | 1.31±1.29 | 0.86±0.34 | 0.431 |
| 20.00 | 0.97±0.59 | 0.95±0.63 | 0.967 |
| 40.00 | 1.04±0.92 | 0.78±0.30 | 0.598 |
| 80.00 | 1.94±1.25 | 0.81±0.65 | 0.096 |
| 160.00 | 1.56±1.05 | 0.91±0.78 | 0.248 |
a
Six replicates were conducted for each concentration as well as for control, and data are expressed as mean±SD
b
Water served as control
c
Student’s t-test of the independent samples was used to compare means of mortality of aphids