Systèmes sylvopastoraux. Pour un environnement, une agriculture et une économie durables
Zaragoza : CIHEAM
Cahiers Options Méditerranéennes; n. 12 1995
pages 267-270
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--- Noitsakis B., Nastis A.S. Season al ch an ges of water poten tial, stomatal con du ctan ce an d tran spiration in th e leaf of Ch erry-trees grown in sh elter. Systèmes sylvopastoraux. Pour un environnement, une agriculture et une économie durables . Zaragoza : CIHEAM, 1995. p. 267-270 (Cahiers Options Méditerranéennes; n. 12)
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Seasonal Changes of Water Potential Stomata1
Conductance and Transpiration in the leaf of Cherry- Trees Grown in Shelter
Basile Noitsakis and Anastasios Nastis
Science of Thessaloniki 54006 Thessaloniki
-
Summary: Seasonal changes of
till the 1994, in the avium) the and planted at
densities: 100, 200, 625 and 1600 stems/ ha (10m X 10 m, 7m X 7m, 4m X4m and 2,Sm X 2,5m spacing)
The spacing not seem to affect the status of
of to the leaf The stomatal
conductahe and in the leaf of the the end of July, than that of the
to to the of
then to the of the leaf loss both the and
the
These findings the concept that the less adaptable to
these out of the
system, plant balance
in is in
the the adoption of new
wide spaced plantation (250 the in
good
The a
on wide spaced plantation. This method allows the to
in excluding the is
the need to investigate the the in
the et al 1985 ; Schulze, 1986 ;
witch is in the
This the physiology of the in in
the limiting
The in
avium in densities: 100, 200, 625 and 1600 stemsha, to spacing 1 0 s 10m, 7m X 7m, 4m X 4m and 2,5m X 2,5
them The establishment of the plantation took place
in 1992 on a native vegetation dominated by
and climatic the
the end of up to the end of in and out of by an
The following in OC,
humidity in %, O C , wet-bu1 in "C.
267
the at the
The by
3rd 4th at
1981a ; et al, 1991).
(24/5, 9/6, 4/7; 25/8, 22/9, of
was the
pratensis, Agropyron repens and glomerata).
40" a
The adoption of to of the
to the
in that in up to the
to
of and. that the
be in
fact, the leaf
to
the as as it would be expected.
This to
in turn
so ;
the on to
to to
to the leaf tissue.
of
in to et ~1,1975). fact, the
stomatal conductance as
as
the of. the the
that stomata have shown to to to
to may be
S
;
in
at the second line of defence, i.e. at to
to to to
to dispose of two distinct lines of defence against of July to both conditions inside to
as to
by as as
to
to
60.00 5 * 50.00 .-
40.00 n
-- m
5
--Q 4
'
20.00 --10.00 --
- _.
I 0.00 4 I
' Jun Jul Aug
Fig. ?%e seasonal pattern the vapour pressure deficit insite 7, 2X2.5), and outsite (out).
J
Y7,4X4 and
-
10x10For
+j 200.00
f 100.00 E
0.00
I 1
i
L - 10x10 I
I Mav Jun Jul Au0
Fig. 4 The changes transpiration over the growth period for the trees grown in the shelter (l OX1 O, 7x7, 4x4 and 2X2.5), out the shelter (out) and forage .(For).
1986. balance plants. in Steward F.C., Sutclzfle JF., Dale eds,
physiolofi London, N. 154
T.C., Silk 5.1985. Leaf growth and deficits: in Baker
Danies W J Ong eds, controlof leaf growth, Seminar 27, 239 236
Jarvis P.G., 1981. Stomata conductance gaseous exchange and in and their atmospheric environment. 171-240
T. 1991 status,
capacitance. in W., J , W.
London: 16 1- 184
1986. offorestproduction. Academic 198p.
1986. Le et le feu outils efficaces dans 1' aménagement des
d' Alep. in 1986/1 e d , Le pin d'alep et le pin drutia dans la : 1 72- 199
Tenhunen J.O., 1981. to humidity phenomenon and mechanisms. in Jarvis
ï3iv. London, 197-162
T.A., 1982.Stomata and stomata1 mechanisms. Aspinall D., eds. 171e physiology and biochemistry drought resistance in plants. Sydney: 3 15-346
to .in Turner B.
drought and salinity . 14 1
1975. The of humidity and leaf
in stomatal of L. The effect on
use efficiency Oecologia 19: 303-314
Turner N.C., 1981a. Techniques the of plant status.
58:339-336
