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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 valueShoot FW (g)Shoot DW (g)Root FW (g)Root DW (g)
Control25.8 ± 1.7a38.5 ± 3.4a34.5 ± 1.3c39.5 ± 4.0a3.8 ± 0.25ab17 ± 2.9c1.9 ± 0.30c
Salinity17.5 ± 1.3c30.5 ± 2.6c40.2 ± 2.2a31 ± 3.6c3.4 ± 0.50b22 ± 3.2b2.8 ± 0.25b
Salinity + root SA pretreatment20 ± 1.8b34.8 ± 2.2ab35 ± 0.8c35 ± 4.1ab3.7 ± 0.47ab24.8 ± 2ab3.1 ± 0.26ab
Salinity + foliar SA pretreatment24.8 ± 1.7a36 ± 1.4ab37.8 ± 0.9b38.2 ± 2.2a4.2 ± 0.30a27.5 ± 2.1a3.4 ± 0.22a
Salinity + foliar SA treatment21.3 ± 1.6b33.3 ± 2.7bc35.7 ± 1bc34 ± 2.9ab3.7 ± 0.34ab23.3 ± 1.7b3.1 ± 0.30ab
ANOVAaF4,15 = 46.3**F4,15 = 35.8**F4,15 = 22.3**F4,15 = 46.1*F4,15 = 0.31 nsF4,15 = 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