Table 2.
Relationship between low temperature survival rate (n = 5) and supercooling points (n = 15) of Trogoderma granarium fourth instar larvae following different thermal regimes.
| Treatments | SCPs (°C) | Survival rate (%) |
|||
|---|---|---|---|---|---|
| -5°C/24 h | -10°C/24 h | -15C/24 h | -20°C/24 h | ||
| Control | -16.4 ± 0.6a | 89.3 ± 3.4a | 54.7 ± 5.3bc | 9.3 ± 4.0b | 00.0 ± 0.0b |
| Cold acclimation | -22.7 ± 0.8b | 96.0 ± 2.7a | 85.3 ± 3.9a | 64.0 ± 4.5a | 20.0 ± 4.7a |
| Fluctuating acclimation | -21.3 ± 0.4b | 100.0 ± 0.0a | 69.3 ± 4.5ab | 48.0 ± 5.7a | 12.0 ± 4.4ab |
| Rapid cold–hardening | -17.9 ± 0.6a | 93.3 ± 3.6a | 41.3 ± 3.9c | 1.3 ± 1.3b | 00.0 ± 0.0b |
| df | 3, 56 | 3, 16 | 3, 16 | 3, 16 | 3, 16 |
| F | 23.33 | 2.52 | 12.38 | 44.93 | 9.19 |
| P | <0.0001 | 0.1949 | 0.0002 | <0.0001 | 0.0009 |
The means followed by different letters in the same columns are significantly different (Turkey’s test, P < 0.05).