Table 3.
Biological parameters [duration (days ± SE) of egg incubation and nymphal development time, egg and nymph viability (%), longevity of adults, and fecundity rate] of Tetranychus urticae kept on leaf disks of different tomato genotypes.
| Genotype | Egg |
Nymph |
Adult |
|||
|---|---|---|---|---|---|---|
| Incubation (days)1 | Viability (%) | Duration (days)1 | Viability (%) | Longevity (days) | No. eggs/female/day1 | |
| S. lycopersicum (cv. Redenção) | 3.4 ± 0.1c | 100 | 11.9 ± 0.2a | 100 | 12.7 ± 0.5a | 3.8 ± 0.2a |
| S. habrochaites var. Hirsutum (PI-127826) | 4.5 ± 0.3ab | 100 | 5.8 ± 0.32b | 0.03 | – | 0.2 ± 0.1c |
| F1 plant (Redenção × PI-127826) | 3.8 ± 0.2bc | 100 | 6.1 ± 0.22b | 0.03 | – | 0.2 ± 0.1c |
| RVTZ-09 (= Low) | 3.4 ± 0.1c | 100 | 11.8 ± 0.1a | 100 | 12.0 ± 0.5a | 3.7 ± 0.2a |
| RVTZ-79 (= High) | 4.3 ± 0.2ab | 100 | 5.5 ± 0.22b | 0.03 | – | 0.6 ± 0.1b |
| RVTZ-142 (= High) | 4.8 ± 0.2a | 100 | 5.4 ± 0.32b | 0.03 | – | 0.8 ± 0.2b |
| RVTZ-331 (= High) | 3.8 ± 0.2bc | 98.3 | 5.8 ± 0.22b | 0.03 | – | 0.4 ± 0.1bc |
| CV (%) | 32.6 | 17.6 | 31.1 | 14.9 | ||
| F | 9.9∗∗ | 298.7∗∗ | – | 99.0∗∗ | ||
Means followed by the same lowercase letter within a column do not differ significantly by the Tukey test (p < 0.05), except for longevity of adults, in which was applied Student’s t-test (p < 0.05) to compare between S. lycopersicum cv. Redenção and RVTZ-09.
∗∗Significant different by F-test (p < 0.01).
1Original data presented [for analysis, data were transformed in (x + 0.5)1/2].
2Nymph development time up to 2nd stadium.
3Total mortality of nymphs in the 3rd stadium.