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Table 1 Some growth characteristics of tomato seedlings under salinity treatment and salicylic acid applications

From: Effectiveness of different methods of salicylic acid application on growth characteristics of tomato seedlings under salinity

 

Plant height (cm)

Leaf area (cm2)

Leaf SPAD value

Shoot FW (g)

Shoot DW (g)

Root FW (g)

Root DW (g)

Control

25.8 ± 1.7a

38.5 ± 3.4a

34.5 ± 1.3c

39.5 ± 4.0a

3.8 ± 0.25ab

17 ± 2.9c

1.9 ± 0.30c

Salinity

17.5 ± 1.3c

30.5 ± 2.6c

40.2 ± 2.2a

31 ± 3.6c

3.4 ± 0.50b

22 ± 3.2b

2.8 ± 0.25b

Salinity + root SA pretreatment

20 ± 1.8b

34.8 ± 2.2ab

35 ± 0.8c

35 ± 4.1ab

3.7 ± 0.47ab

24.8 ± 2ab

3.1 ± 0.26ab

Salinity + foliar SA pretreatment

24.8 ± 1.7a

36 ± 1.4ab

37.8 ± 0.9b

38.2 ± 2.2a

4.2 ± 0.30a

27.5 ± 2.1a

3.4 ± 0.22a

Salinity + foliar SA treatment

21.3 ± 1.6b

33.3 ± 2.7bc

35.7 ± 1bc

34 ± 2.9ab

3.7 ± 0.34ab

23.3 ± 1.7b

3.1 ± 0.30ab

ANOVAa

F4,15 = 46.3**

F4,15 = 35.8**

F4,15 = 22.3**

F4,15 = 46.1*

F4,15 = 0.31 ns

F4,15 = 60.3**

F4,15 = 1.2**

  1. Salinity was applied at 100 mM NaCl in nutrient solution
  2. Salicylic acid was applied with two sprays of 100 mg L−1, as pretreatment or treatment
  3. Root pretreatment was done once with 30 min immersing in 100 mg L−1 salicylic acid
  4. Comparison of means was done with Duncan’s multiple range test at 5% level
  5. 0.05, 0.01 and ns mean significant effect at 5%, 1% and not significant, respectively
  6. aIndicating F values and corresponding P values in which *, ** and ns mean significant effect at 5%, 1% and not significant, respectively