Agriculture Reference
In-Depth Information
Figure 5. Changes in (A) potassium (mmol.g
-1
DW), (B) calcium (µmol.g
-1
DW) and (C) iron (µg.g
-1
DW) concentrations in the shoots of
S. portulacastrum
and
M. crystallinum
with different treatments.
Means of 8 replicates. Bars marked with same letter are not significantly different at p= 0.05.
Plants subjected to the Split root system-treatments showed an adequate K
+
shoot
provision in
Sesuvium.
However, in
Mesembryanthemum
, B/Cd and B/Ni plants accumulated
in their shoots respectively 60 and 75% of K
+
amounts measured in B/B plants (Table 2).
C
ALCIUM
N
UTRITION
The presence of Cd
2+
or Ni
2+
in the culture medium (Cd/Cd and Ni/Ni treatments) did not
modify significantly shoot Ca
2+
concentration in both species (Figure 5B). Analysis of Ca
2+
amounts allocated to shoots showed specific differences (Table 2). In
Sesuvium
, no significant
