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Table 4 Effect of salicylic acid treatments on functional attributes of leaves of B. carinata cultivars grown under salt stress

From: Salicylic acid alleviates salinity-caused damage to foliar functions, plant growth and antioxidant system in Ethiopian mustard (Brassica carinata A. Br.)

Cultivars

Treatments

Relative water

content (%)

Chlorophyll

fluorescence (Fv/Fm)

Stomatal conductance

(mol m−2s−1)

Net photosynthetic rate

(µ mol CO2 m−2 s−1)

Transpiration rate

(m mol m−2s−1)

Water use efficiency

Adet

Control

72.69 ± 1.58a

0.821 ± 0.007a

0.196 ± 0.006a

15.77 ± 0.59b

5.20 ± 0.18a

3.03 ± 0.29a

0 mM NaCl, with 0.5 mM SA

73.86 ± 3.17a

(1.61)

0.834 ± 0.004a

(1.58)

0.198 ± 0.004a

(1.02)

19.21 ± 0.56a

(21.81)

5.38 ± 0.19a

(3.46)

3.57 ± 0.25a

(17.82)

50 mM NaCl without SA

71.40 ± 2.18a

(1.77)

0.781 ± 0.013b

(4.87)

0.182 ± 0.002b

(7.14)

14.72 ± 0.56bc

(6.66)

4.97 ± 0.14a

(4.42)

2.96 ± 0.27b

(2.31)

50 mM NaCl with 0.5 mM SA

72.06 ± 2.77a

(0.86)

0.815 ± 0.011a

(0.73)

0.194 ± 0.004a

(1.02)

17.13 ± 0.59a

(8.62)

5.03 ± 0.13a

(3.27)

3.41 ± 0.24a

(12.54)

100 mM NaCl without SA

68.72 ± 2.62a

(5.46)

0.738 ± 0.007c

(10.11)

0.161 ± 0.004c

(17.86)

11.87 ± 0.73d

(24.73)

4.46 ± 0.17b

(14.23)

2.66 ± 0.19b

(12.21)

100 mM NaCl with 0.5 mM SA

72.84 ± 2.12a

(0.21)

0.764 ± 0.016b

(6.94)

0.167 ± 0.005c

(14.80)

15.07 ± 0.61c

(4.44)

4.56 ± 0.17ab

(12.31)

3.30 ± 0.17a

(8.91)

150 mM NaCl without SA

52.83 ± 2.17c

(27.32)

0.628 ± 0.009d

(23.51)

0.143 ± 0.003e

(27.04)

9.74 ± 0.74e

(38.24)

3.64 ± 0.14e

(30.00)

2.68 ± 0.19b

(11.55)

150 mM NaCl with 0.5 mM SA

65.49 ± 1.98ab

(9.91)

0.741 ± 0.007b

(9.74)

0.163 ± 0.007cd

(16.84)

11.74 ± 0.82d

(25.55)

4.09 ± 0.14c

(21.35)

2.87 ± 0.14b

(5.28)

Merawi

Control

70.28 ± 1.74a

0.813 ± 0.008a

0.185 ± 0.005a

15.39 ± 0.52b

4.81 ± 0.20a

3.20 ± 0.24a

0 mM NaCl, with 0.5 mM SA

71.94 ± 2.64a

(2.36)

0.827 ± 0.006a

(1.72)

0.187 ± 0.006a

(1.08)

18.25 ± 0.63a

(18.58)

4.97 ± 0.23a

(3.33)

3.67 ± 0.23a

(14.69)

50 mM NaCl without SA

69.03 ± 2.17a

(1.78)

0.771 ± 0.011b

(5.17)

0.167 ± 0.004c

(9.73)

14.08 ± 0.57c

(8.51)

4.61 ± 0.12ab

(4.16)

3.05 ± 0.22b

(4.69)

50 mM NaCl with 0.5vmM SA

71.34 ± 2.04a

(1.51)

0.802 ± 0.013a

(1.35)

0.184 ± 0.005a

(0.54)

15.68 ± 0.57b

(1.88)

4.72 ± 0.19ab

(1.87)

3.32 ± 0.21ab

(3.75)

100 mM NaCl without SA

66.13 ± 1.83ab

(5.90)

0.726 ± 0.011c

(10.70)

0.152 ± 0.003d

(17.84)

11.23 ± 0.62d

(27.03)

4.02 ± 0.18c

(16.42)

2.79 ± 0.21b

(12.81)

100 mM NaCl with 0.5 mM SA

70.28 ± 1.74a

(0.00)

0.758 ± 0.013b

(6.77)

0.161 ± 0.004c

(12.97)

14.71 ± 0.57c

(4.42)

4.16 ± 0.19c

(13.51)

3.54 ± 0.19a

(10.63)

150 mM NaCl without SA

51.52 ± 2.08c

(26.69)

0.614 ± 0.007d

(24.48)

0.139 ± 0.002e

(24.86)

8.85 ± 0.63e

(42.50)

3.51 ± 0.12e

(27.03)

2.52 ± 0.17c

(21.25)

150 mM NaCl with 0.5 mM SA

63.48 ± 1.53b

(9.68)

0.738 ± 0.008b

(9.23)

0.151 ± 0.006d

(18.38)

11.03 ± 0.80d

(28.33)

3.79 ± 0.13de

(21.21)

2.91 ± 0.13b

(9.06)

  1. Each value represents the mean ± SE of five replicates. Numbers followed by different letters indicate significant differences (P < 0.05) according to the Duncan test.
  2. Values within parenthesis are percent variation as obtained from the control plants of respective cultivars