Table 2 Comparison of mean values of physiological characteristics in control (C) and humidified trees (H) before branch cutting (on intact trees) and depending on severity of water deficit (Ψ _L <-1.55 MPa versus Ψ _L ≥-1.55 MPa)

Ψ_L (MPa)

-1.07

-1.03

-1.26

-1.25

-1.91

-2.10

Ψ_B (MPa)

-0.81

-0.65

-0.98

-0.90

-1.62

-1.56

T_L (ºC)

26.2

25.4

27.6 ^*

26.2 ^*

28.8

29.3

g_L (mol m^-2 s^-1)

0.071 ^*

0.166 ^*

0.044 ^**

0.101 ^**

0.026

0.060

E (mmol m^-2 s^-1)

0.92 ^*

2.07 ^*

0.65 ^**

1.33 ^**

0.47

1.00

g_S (mol m^-2 s^-1)

0.145

0.237

0.086

0.138

0.046

0.060

C_i/C_a (dimensionless)

0.70

0.68

0.74

0.71

0.87

0.89

A_n (μmol m^-2 s^-1)

6.47

9.29

4.21

5.96

2.00

2.66

IWUE (μmol mol^-1)

51.3

48.2

49.3

49.9

35.3

32.8

K_L, (mmol m^-2 s^-1 MPa^-1)

3.65

5.88

2.47 ^*

3.78 ^*

1.85

1.88

R_L (dimensionless)

0.32

0.44

-

-

-

-

K_S-B, (mmol m^-2 s^-1 MPa^-1)

2.28 ^*

5.26 ^*

-

-

-

-

K_T, (mmol m^-2 s^-1 MPa^-1)

1.15 ^*

2.36 ^*

-

-

-

-