Table 4.
Number and proportion (%) of salivary sheaths produced by Diaphorina citri nymphs and adults in leaf tissues feeding on midribs of citron leaves. Data pooled for healthy and CLas-infected plants.
| Parameter | Nymphs | Adults | X2 | P | ||
|---|---|---|---|---|---|---|
| No. | % | No | % | |||
| Branched sheaths/no. sheaths in mesophyll | 20/92 | 21.7 | May-61 | 8.2 | 3.98 | 0.046 |
| Sheath termini near fibrous ring/total no. sheaths | 43/237 | 18.1 | 45/161 | 28 | 4.8 | 0.029 |
| Sheath termini in VB1/total no. sheaths. | 102/237 | 43.1 | 55/161 | 34.2 | 2.8 | 0.094 |
| Sheaths in phloem/total no. sheaths | 92/237 | 38.8 | 52/161 | 32.3 | 1.49 | 0.222 |
| Sheaths in xylem/total no. sheaths | 10/237 | 4.2 | 3/161 | 1.9 | 1.02 | 0.313 |
| Sheaths in phloem/sheaths in vascular bundle | 92/102 | 90.2 | 52/55 | 94.6 | 0.41 | 0.522 |
| Sheaths in xylem/sheaths in VB | 10/102 | 9.8 | Mar-55 | 5.5 | 0.41 | 0.522 |
1VB = vascular bundle.