Table 7.
Mean ± SEM (A) total eggs laid and (B) egg fertility for psyllids on four different potato genotypes
| A. Total eggs | |||||
|---|---|---|---|---|---|
| Genotype | N | Period 1a | Period 2 | Period 3 | Period 4 |
| A07781-10LB | 20 | 6.3 ± 1.5 | 7.0 ± 1.7 | 9.4 ± 2.3 | 3.8 ± 1.0 |
| A07781-3LB | 13 | 4.8 ± 1.4 | 9.5 ± 2.8 | 9.1 ± 2.7 | 4.3 ± 1.3 |
| A07781-4LB | 19 | 8.4 ± 2.0 | 10.5 ± 2.6 | 8.0 ± 2.0 | 6.9 ± 1.8 |
| Russet Burbank | 14 | 5.8 ± 1.7 | 7.6 ± 2.2 | 7.0 ± 2.0 | 6.6 ± 1.9 |
| Overall | 66 | 6.2 ± 0.8 | 8.5 ± 1.1 | 8.3 ± 1.1 | 5.2 ± 0.7 |
| B. Percent fertility | |||||
| Genotype | N | Period 1 | Period 2 | Period 3 | Period 4 |
| A07781-10LB | 20 | 68.8 ± 9.2 | 59.5 ± 10.9 | 61.8 ± 10.7 | 3.2 ± 2.0a |
| A07781-3LB | 13 | 65.9 ± 12.8 | 61.0 ± 12.6 | 55.7 ± 13.3 | 11.9 ± 6.8ab |
| A07781-4LB | 19 | 62.3 ± 10.5 | 64.1 ± 10.1 | 49.6 ± 12.2 | 29.2 ± 10.4bc |
| Russet Burbank | 14 | 47.0 ± 13.0 | 50.9 ± 12.7 | 63.9 ± 11.9 | 70.1 ± 10.9c |
| Overall | 66 | 61.3 ± 5.9A | 58.9 ± 5.9AB | 57.8 ± 6.1AB | 20.3 ± 4.7B |
Means for individual genotypes within a time period that share a letter or overall means within a row that share a letter are not significantly different (P > 0.05).
aPeriod 1 (the mating access period) comprised of 6 or 8 d, during which a female + male pair of psyllids was held on a caged plant. At the end of Period 1, the male was removed, and the remaining female was transferred to a new plant of the same genotype over three successive 4-d time periods (Periods 2–4, 18–20 d total).