140
.... ..
...
4>
A
•
4>
0
...
w ..
....
::•
~
..
'" • w
...
•
u
~ ..
U '
U •
:s "
~ 's
0
U .-4
~
3
III
•
..:I
•
....
• •
A ~
U '
~ .
· ~
o s
u
0 .-4
A
3
110
u
•
Z
0
-1
-2
-3
0 . 3
0 . 2
0 . 1
0
12
8
4
0 J
1990
Robert Save, Carles Castell and Jaume Terradas
a
Mature plants
~Resprouts
b
C
M
1991
Fig. 10.2. Seasonal course of predawn water potential (a) and mean values during the light saturation phase of the day for leaf conductance (b) and net photosynthesis (c) of mature plant and
sprout leaves of holm oak from June 1990 to May 1991. Conductance and photosynthesis were
measured with a portable ADC IRGA-porometer. Mean values for sprouts versus mature plant
shoots were compared by repeated measures analysis of variance (significant differences on a
particular date are indicated as * P < 0.05, ** P < 0.01, *** P
.... ..
...
4>
A
•
4>
0
...
w ..
....
::•
~
..
'" • w
...
•
u
~ ..
U '
U •
:s "
~ 's
0
U .-4
~
3
III
•
..:I
•
....
• •
A ~
U '
~ .
· ~
o s
u
0 .-4
A
3
110
u
•
Z
0
-1
-2
-3
0 . 3
0 . 2
0 . 1
0
12
8
4
0 J
1990
Robert Save, Carles Castell and Jaume Terradas
a
Mature plants
~Resprouts
b
C
M
1991
Fig. 10.2. Seasonal course of predawn water potential (a) and mean values during the light saturation phase of the day for leaf conductance (b) and net photosynthesis (c) of mature plant and
sprout leaves of holm oak from June 1990 to May 1991. Conductance and photosynthesis were
measured with a portable ADC IRGA-porometer. Mean values for sprouts versus mature plant
shoots were compared by repeated measures analysis of variance (significant differences on a
particular date are indicated as * P < 0.05, ** P < 0.01, *** P