Growth and Physiological Responses of Phaseolus Species to Salinity Stress
Table 1
Effects of external NaCl concentrations on mineral composition of leaves, stem, and roots of Phaseolus species.
Species/Genotype
Leaves
Stem
Root
NaCl (mM)
mmol kg−1 dry weight
Na+
K+
Cl−
Na+
K+
Cl−
Na+
K+
Cl−
P. vulgaris PvWT
0
17 cz
1382 a
9 c
27 c
1308 a
16 c
20 b
1302 a
29 c
60
13 b
1021 b
1078 b
222 b
1077 b
658 b
423 a
838 b
663 b
90
159 a
747 c
2153 a
285 a
831 c
1342 a
460 a
778 b
999 a
P. vulgaris PvCS
0
20 b
1289 a
2 c
22 b
2267 a
2 c
21 c
1403 a
25 c
60
143 a
849 b
767 b
276 a
1527 b
672 b
321 b
806 b
481 b
90
154 a
727 b
1895 a
268 a
1272 c
1262 a
480 a
703 b
879 a
P. acutifolius PaWS
0
19 c
1430 a
23 a
24 c
1428 a
32 c
18 b
1773 a
45 c
60
166 b
1213 b
933 b
257 b
877 b
443 b
377 a
901 b
452 b
90
223 a
1032 b
1889 c
309 a
704 c
880 a
447 a
495 c
1040 a
P. acutifolius PaCT
0
14 c
1222 a
22 c
22 b
1188 a
26 c
15 b
2158 a
34 c
60
90 b
952 b
1109 b
289 a
1073 a
418 b
349 a
905 b
630 b
90
267 a
926 b
2201 a
256 a
612 b
843 a
371 a
788 b
965 a
F-values from ANOVA
NaCl
470***
112***
79***
352***
89*
37***
308***
118***
1111***
Species
12***
17***
13***
0.1ns
109***
18***
7**
13.6***
15***
NaCl Species
29***
3.3**
3.5**
5.1**
7.7***
6.9***
4.7**
11.2***
9.1**
zValues are means of six replicates after 20 days of salt exposure. Differences among treatments at P ≤ 0.05 are given according to Duncan multiple range test. ns: not significant, *, **, *** Significant at P ≤ 0.05, P ≤ 0.01 and P ≤ 0.001, respectively.
