Physiological and Growth Responses of Six Turfgrass Species Relative to Salinity Tolerance
Table 4
Effect of salinity on leaf proline content of six turfgrass species.
(dS m−1)
Turfgrass species (proline contents in mg g−1, fresh weight)
P. vaginatum
Z. japonica
Z. matrella
D. didactyla
C. dactylon “Tifdwarf”
C. dactylon “Satiri”
LSD (0.05)
0
3.33 f
3.60 d
3.67 f
3.55 e
5.60 f
6.35 e
0.96
8
4.60 ef (1.4)
4.07 d (1.1)
4.62 f (1.3)
6.42 e (1.8)
7.25 f (1.3)
10.60 e (1.7)
2.31
16
7.80 ed (2.3)
6.50 d (1.8)
6.02e (1.7)
12.40 d (3.5)
15.35 e (2.7)
29.90 d (4.7)
3.65
24
11.61 d (3.5)
13.10 c (3.6)
9.24 d (2.5)
15.05 d (4.2)
26.35 d (4.7)
52.50 c (8.3)
1.77
32
26.90 c (8.1)
16.25 c (4.5)
11.30 c (3.1)
34.55 c (9.7)
37.57 c (6.7)
66.52 b (10.5)
3.53
40
51.20 b (15.4)
45.82 b (12.7)
25.57 b (7.0)
43.27 b (12.2)
65.15 b (11.2)
71.35 a (11.2)
4.09
48
77.90 a (23.4)
49.62 a (13.8)
43.52 a (12.0)
49.92 a (14.1)
62.57 a (11.6)
74.85 a (11.8)
5.18
LSD (0.05)
4.45
3.26
1.26
3.49
1.93
4.43
Means within columns followed by the same letter are not significantly different at (LSD test). Values in the parentheses indicate x-fold increase relative to the control.
