Table 2.
Stomatal characteristics of pot rose cv. ‘Toril’ grown at moderate (61%) or high (92%) RH, without (-MOV) or with (+MOV) additional MOV in intact fully expanded leaves, 4 h after the beginning of the light period.
| Moderate RH |
High RH |
|||||
|---|---|---|---|---|---|---|
| -MOV | +MOV | Mean | -MOV | +MOV | Mean | |
| Stomatal density (no mm-2) | 57.2 | 55.8 | 56.5a | 59.8 | 57.8 | 58.8b |
| Stomatal index (%) | 12.4 | 12.4 | 12.4a | 13.9 | 14.0 | 14.0b |
| Stomatal length (μm) | 27.4 | 26.8 | 27.1a | 32.6 | 32.4 | 32.5b |
| Stomatal width (μm) | 15.4 | 15.5 | 15.4a | 19.6 | 19.5 | 19.5b |
| Pore length (μm) | 17.3a | 17.2a | 17.2 | 24.5c | 23.1b | 23.8 |
| Pore aperture (μm) | 3.4a | 3.2a | 3.3 | 6.8c | 5.7b | 6.2 |
Values are the mean of 70 field views (stomatal density and index) and 140 stomata (stomatal length and width, pore length and aperture). Different letters represent significant differences according to Fisher’s LSD test (P = 0.05; comparison in rows).