The Scientific World Journal / 2012 / Article / Tab 2 / Research Article
Differential Responses of Two Broccoli (Brassica oleracea L. var Italica) Cultivars to Salinity and Nutritional Quality Improvement Table 2 Effects of salt stress on ion levels in the shoots and roots of cultivars Parthenon and Naxos treated with different concentrations of NaCl for 15 days. Values are means ± standard errors (
𝑛
=
5
). Means followed by different letters are significantly different according to Tukey's test at
𝑃
<
0
.
0
5
. The significance of the difference between the two cultivars is given according to the Student’s t -test, with *
𝑃
<
0
.
0
5
, **
𝑃
<
0
.
0
1
, ***
𝑃
<
0
.
0
0
1
; n.s: non-significant.
Plant part Cultivar NaCl (mM) Cations (mmol kg DW−1 ) Anions (mmol kg DW−1 )
N
a
+
K
+
C
a
2
+
M
g
2
+
C
l
−
N
O
3
−
P
O
4
3
−
S
O
4
2
−
Shoots Parthenon 0 4 ± 0.15 a 1292 ± 19.81 a 902 ± 14.50 a 143 ± 4.08 a 11.61 ± 0.69 a 86.32 ± 1.17 a 5.05 ± 0.33 a 14.39 ± 0.29 b 30 901 ± 25.13 b 920 ± 11.26 b 727 ± 11.20 b 121 ± 2.12 b 58.58 ± 3.62 b 74.56 ± 1.28 b 6.51 ± 0.06 b 16.18 ± 0.38 c 60 1438 ± 16.94 c 663 ± 21.41 c 645 ± 11.29 c 109 ± 1.81 b 84.64 ± 4.11 c 60.67 ± 0.42 c 6.53 ± 0.12 b 14.05 ± 0.06 b 90 1878 ± 73.24 d 540 ± 20.86 d 588 ± 26.16 c 112 ± 5.30 b 145.26 ± 10.90 d 48.44 ± 3.40 d 6.34 ± 0.34 b 10.43 ± 0.51 a Naxos 0 19 ± 2.53 a 1290 ± 32.74 a 884 ± 11.51 a 159 ± 2.28 a 10.38 ± 0.67 a 76.22 ± 5.01 a 2.84 ± 0.65 a 12.56 ± 0.74 a 30 1023 ± 50.65 b 795 ± 17.81 b 743 ± 6.21 b 139 ± 1.74 b 48.05 ± 6.37 b 57.21 ± 1.90 b 4.37 ± 0.20 b 11.66 ± 0.47 a 60 1536 ± 43.54 c 669 ± 8.10 c 696 ± 12.00 c 140 ± 2.46 b 68.37 ± 2.03 c 50.47 ± 3.90 bc 5.07 ± 0.22 b 11.27 ± 0.08 ab 90 2120 ± 86.19 d 546 ± 25.90 d 557 ± 10.08 d 128 ± 1.61 c 154.83 ± 5.64 d 43.46 ± 1.17 c 5.08 ± 0.19 b 9.23 ± 0.80 b 0
** n.s. n.s.
* n.s. n.s.
* n.s.
Significance between the two 30 n.s.
*** n.s.
*** n.s.
***
***
***
cultivars for the shoot ion composition 60 n.s. n.s.
*
***
** n.s.
**
*** 90 n.s. n.s. n.s.
* n.s. n.s.
* n.s. Roots Parthenon 0 8 ± 1.10 a 1295 ± 79.35 a 255 ± 26.65 a 99 ± 6.96 a 6.75 ± 2.01 a 48.72 ± 4.73 a 9.75 ± 0.15 a 6.45 ± 0.28 a 30 388 ± 31.49 b 995 ± 77.89 b 144 ± 17.33 b 85 ± 5.86 a 31.55 ± 1.35 b 28.98 ± 2.47 b 5.93 ± 0.17 b 5.14 ± 0.25 b 60 592 ± 32.52 c 919 ± 60.36 b 94 ± 2.41 b 88 ± 4.19 a 44.42 ± 2.44 c 19.95 ± 1.07 bc 6.09 ± 0.17 b 4.95 ± 0.21 b 90 786 ± 35.21 d 756 ± 60.72 b 88 ± 3.36 b 84 ± 3.93 a 61.73 ± 2.63 d 14.90 ± 3.00 c 5.60 ± 0.40 b 4.62 ± 0.38 b Naxos 0 26 ± 2.09 a 1376 ± 10.07 a 253 ± 43.70 a 96 ± 2.80 a 7.72 ± 2.44 a 31.44 ± 4.06 a 6.67 ± 0.30 a 5.18 ± 0.21 a 30 418 ± 18.45 b 1162 ± 25.48 b 176 ± 24.39 ab 96 ± 1.29 a 42.74 ± 2.57 b 23.13 ± 1.64 ab 5.93 ± 0.25 a 4.50 ± 0.14 a 60 616 ± 30.70 c 1055 ± 51.20 bc 111 ± 3.19 b 95 ± 4.51 a 47.75 ± 3.89 b 22.22 ± 1.50 ab 5.50 ± 0.29 a 4.51 ± 0.12 a 90 881 ± 38.22 d 991 ± 24.82 c 98 ± 7.80 b 105 ± 2.49 a 66.26 ± 3.52 c 17.59 ± 2.26 b 4.69 ± 0.85 a 3.38 ± 0.45 b 0
*** n.s. n.s. n.s. n.s.
*
***
**
Significance between the two 30 n.s. n.s. n.s. n.s.
** n.s. n.s. n.s.
cultivars for the root ion composition 60 n.s. n.s.
** n.s. n.s. n.s. n.s. n.s. 90 n.s.
* n.s.
*** n.s. n.s. n.s. n.s.
