Triticeae Genomics and Genetics 2016, Vol.7, No.02, 1
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there is a marginal reduction in dry matter yield up to
20 mM (by about 20% ) then a sharp and sudden
reduction was observed beyond this level which was
about 60% up to the level of 150 mM NaCl salinity
and about 70% at the level 300 mM NaCl salinity.
Interestingly this was the case in spikes where the
production of spike reduced by more than 50% at the
level of 20 mM NaCl salinity. This reduction
remained more or less constant even at the highest
salinity level used.
Table 1 Effect of various concentrations of NaCl on dry matter of roots, stems, leaves and spikes of cv. Sakha 94, cv. Gimiza11, cv.
Gimiza10 and cv. Giza 168 wheat cultivar.
cv. Sakha 94
NaCl Treat.
Root
%
Stem
%
Leaf
%
Spike
%
Cont
0.210a
100
0.692a
100
0.170a
100
0.250a
100
20 mM
0.190
90.4
0.79
114.1
0.24
141.1
0.29
116
50 mM
0.25
95.2
0.89
128.9
0.28
164.7
0.41
164
150 mM
0.19
90.4
0.83
120.2
0.3
176
0.56
224
300 mM
0.13
61.9
0.61
88.4
0.160
94.1
0.29
116
L. S. D. 5%
0.64
0.43
0.69
0.15
Gimiza 11
Cont
0.185a 100
0.645a
100
0.230a
100
0.352a
100
20 mM
0.21
116.6
0.78
121.8
0.2
68.9
0.35
109.3
50 mM
0.27
150
0.98
153.1
0.2
86.9
0.38
118.7
150 mM
0.14
77.7
0.38
129.6
0.2
86.9
0.34
106.3
300 mM
0.04
0.48
75
0.15
65.2
0.26
81.2
L. S. D. 5%
0.46
0.20
0.46
0.12
cv. Gimiza 10
Cont
0.25a
100
1.03a
100
0.28a
100
0.47a
100
20 mM
0.2
80
0.75
72.8
0.24
85.7
0.28
59.5
50 mM
0.22
88
0.73
70.8
0.28a
100
0.29
61.7
150 mM
0.22
88
0.71
68.9
0.28a
100
0.29
61.7
300 mM
0.12
48
0.58
56.3
0.16
57.1
0.21
44.6
L. S. D. 5%
0.16
0.18
0.19
0.56
cv.Giza 168
Cont
0.47a
100
1.14a
100
0.33a
100
0.6a
100
20 mM
0.38
80.8
0.6
52.6
0.26
78.7
.28
46.6
50 mM
0.23
48.9
0.71
62.2
0.23
69.6
0.31
51.6
150 mM
0.2
42.5
0.63
55.2
0.18
54.5
0.27
45
300 mM
0.17
36.1
0.41
35.9
0.16
48.4
0.18
30
L. S. D. 5%
0.11
0.49
0.37
0.13
Means not labeled with letter (a) are significantly different from control level mean.
*significant at < 0.05
1.2 Chemical constituents
1.2.1 Soluble sugar content
In roots of wheat cultivar Sakha 94, the soluble
carbohydrates remained more or less unchanged even
at the higher salinity (table 2). The soluble
carbohydrates in stems remained more or less
unchanged up to 150 mM and then a marginal
increase was exhibited at 300 mMNaCl. In leaves
some promotion in the soluble carbohydrate has been
recorded up to 50 mM, then a highly significant
increase was recorded. In spikes, the soluble
carbohydrates mostly remained more or less
unchanged whatever the salinity level used. In roots of
Gimiza 11 salinity stress induced a slight effect if any,
in the soluble carbohydrates of roots, however there is
a marginal reduction at higher salinity levels which
not exceeded than 15.5% (table 2). In stems the
soluble carbohydrates increased progressively as the
