Table 5.
Corrected mortality (means ± SE) of immature stages of Callosobruchus maculatus feeding in treated cowpea with acetone and methanol extracts of Gnidia kraussiana
| Stage | Mortality | F 2,6 | ||
|---|---|---|---|---|
| NSO | Acetone fraction | Methanol fraction | ||
| 1 g/kg | ||||
| Eggs | 70.1 ± 5.5Aab | 49.8 ± 2.1Bb | 30.4 ± 3.2Ca | 26.13*** |
| L1 | 85.3 ± 10.5Aa | 81.3 ± 3.6Aa | 19.9 ± 2.8Ba | 30.91*** |
| L2 | 22.5 ± 5.4Bc | 78.1 ± 0.5Aa | 4.3 ± 3.0Cb | 115.89*** |
| L3 | 37.8 ± 4.7Ac | 33.9 ± 5.8Ac | 3.6 ± 0.8Bb | 30.57*** |
| L4 | 47.9 ± 3.8Abc | 4.2 ± 2.0Bd | 1.9 ± 1.0Bb | 103.05*** |
| Pupa | 20.3 ± 4.0Ac | 16.2 ± 1.4Ad | 1.2 ± 1.2Bb | 20.76** |
| F 5,12 | 18.42*** | 106.64*** | 29.47*** | |
| 5 g/kg | ||||
| Eggs | 100.0 ± 0.0Aa | 96.6 ± 0.2Ba | 57.8 ± 4.8Cb | 163.15*** |
| L1 | 97.0 ± 3.0Aab | 95.3 ± 4.7Aa | 90.9 ± 5.1Aa | 0.53ns |
| L2 | 78.6 ± 4.8Abc | 82.4 ± 2.4Aa | 8.7 ± 3.8Bc | 118.28*** |
| L3 | 52.8 ± 4.8Ad | 40.6 ± 1.9Abc | 16.8 ± 2.1Bc | 34.73*** |
| L4 | 67.4 ± 6.7Acd | 26.3 ± 8.2Bc | 2.0 ± 0.4Cc | 56.86*** |
| Pupa | 57.8 ± 4.4Acd | 45.0 ± 3.0Ab | 7.1 ± 1.9Bc | 66.99*** |
| F 5,12 | 25.80*** | 83.92*** | 106.44*** | |
L1: first-instar larva; L2: second-instar larva; L3: third-instar larva; L4: fourth-instar larva.
Means within the column and the line followed respectively by the same small and capital letter(s) did not differ significantly (P < 0.05; Tukey test).
ns: P ˃ 0.05; **P < 0.001; ***P < 0.001.