Table 4 Comparison of xylem cell properties before and after HWA arrival (α = 0.05)
From: Radial growth changes following hemlock woolly adelgid infestation of eastern hemlock
Cell properties | Before HWA arrival | After HWA arrival | t value | p value |
|---|---|---|---|---|
Mean LW cell wall thickness (μm) | 5.51 (1.00) | 4.65 (1.12) | 6.87 | <0.001* |
Mean LW radial cell diameter (μm) | 15.90 (2.70) | 14.82 (2.92) | 3.33 | 0.001* |
Mean EW cell wall thickness (μm) | 2.24 (1.10) | 2.34 (1.05) | −0.79 | 0.430 |
Mean EW radial cell diameter (μm) | 50.36 (8.40) | 51.17 (8.36) | 1.48 | 0.141 |