Table 1.
Seedlings dry weights, needle chlorophyll content (NC), net photosynthesis (NP), transpiration (E), water potential (WP), whole root system hydraulic conductance (KTOT) and hydraulic conductivity (LTOT) in flooded adventitious roots and non-flooded control roots of tamarack seedlings
| Non-flooded | Flooded | |
|---|---|---|
| Root DW (g) |
13.8 ± 0.5 |
11.8 ± 1.2 |
| Shoot DW (g) |
26.5 ± 1.7 |
25.7 ± 3.5 |
| Total DW (g) |
39.5 ± 2.3 |
38.3 ± 4.7 |
| Shoot:Root Ratio |
1.9 ± 0.1 |
2.3 ± 0.3 |
| NC (mg g-1 DW) |
14.7 ± 1.0a |
9.4 ± 0.7b |
| NP (μmol CO2 m-2 s-1) |
5.6 ± 1.2 |
6.4 ± 1.5 |
| E (mmol H2O m-2 s-1) |
0.5 ± 0.1 |
0.6 ± 0.1 |
| WP (MPa) |
−0.78 ± 0.04 |
−0.81 ± 0.05 |
| KTOT (kg MPa-1 s-1 × 10-5) |
1.2 ± 0.2 |
1.2 ± 0.4 |
| LTOT (kg MPa-1 cm-3 s-1 × 10-7) | 2.0 ± 0.3 | 1.6 ± 0.1 |
Different letters within the same row indicate significant differences between flooded and non-flooded plants (t-test, p = 0.05). Values are means ± SE (n = 6 for KTOT and LTOT and n = 7 for the rest of the measurements).