Table 1.
Life table parameters of Plutella xylostella fed on oilseed rape plants treated with jasmonic acid and/or aphid1.
| Treatment | R0 (egg/female) | r (day−1) | λ (day−1) | T (day) |
|---|---|---|---|---|
| Control | 63.73 ± 7.26a | 0.1831 ± 0.0053a | 1.2010 ± 0.0064a | 23.82 ± 0.50b |
| Aphid | 39.80 ± 5.21b | 0.1542 ± 0.0056b | 1.1668 ± 0.0066b | 22.64 ± 0.32c |
| JA | 16.35 ± 3.77d | 0.1070 ± 0.0069d | 1.1130 ± 0.0077d | 25.91 ± 0.18a |
| JA + Aphid | 22.67 ± 3.36c | 0.1201 ± 0.0084c | 1.1276 ± 0.0093c | 25.86 ± 0.28a |
| P | <0.01 | <0.01 | <0.01 | <0.01 |
1The plants were treated with jasmonic acid (5 mM for 2 days) and/or aphid (20 adults for 2 days) prior to determining nutritional indices of P. xylostella. Means in a row followed by different letters are significantly different at P < 0.05 by using paired bootstrap test. R0, net reproductive rate; r, intrinsic rate of increase; λ, finite rate of increase; T, mean generation time. JA, jasmonic acid.