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Table 1 Seedlings dry weights, needle chlorophyll content (NC), net photosynthesis (NP), transpiration (E), water potential (WP), whole root system hydraulic conductance (K TOT ) and hydraulic conductivity (L TOT ) in flooded adventitious roots and non-flooded control roots of tamarack seedlings

From: Role of adventitious roots in water relations of tamarack (Larix laricina) seedlings exposed to flooding

 

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

  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).