Table 5 Mean comparisons for growth parameters of R. damascena plants under different salinity levels and treated with salicylic acid at four rates of application

Control

control

2.63 ± 0.35ab

1.34 ± 0.10ab

254.91 ± 7.29ab

165.10 ± 8.08ab

125.17 ± 5.59abc

56.11 ± 4.17ab

57.75 ± 7.00bc

86.33 ± 8.95ab

187.16 ± 11.89a

0.5 mM

2.99 ± 0.39a

1.49 ± 0.16a

218.65 ± 5.07abc

188.55 ± 6.86ab

146.61 ± 11.29ab

54.76 ± 5.69ab

59 ± 3.38bc

99.32 ± 1.45a

174.89 ± 7.06ab

1 mM

2.81 ± 0.40ab

1.41 ± 0.19a

275.76 ± 9.73a

200.19 ± 3.50a

176.1 ± 4.23a

70.66 ± 6.25a

76.25 ± 2.89a

91 ± 4.50ab

189.38 ± 5.03a

2 mM

2.94 ± 0.35ab

1.32 ± 0.09ab

258.09 ± 7.48ab

184.97 ± 4.64ab

138.07 ± 11.48abc

67.75 ± 5.54ab

65.5 ± 4.78ab

80.66 ± 4.80ab

176.11 ± 5.15ab

4 ds m⁻¹

control

2.82 ± 0.41ab

1.22 ± 0.14ab

226.31 ± 4.92abc

168.12 ± 6.38ab

131.83 ± 4.34abc

54.22 ± 3.35ab

63.75 ± 6.67ab

80 ± 11.53ab

164.66 ± 10.12abc

0.5 mM

2.95 ± 0.38ab

1.24 ± 0.16ab

237.28 ± 4.81ab

166.75 ± 3.36ab

131.55 ± 5.65abc

52.98 ± 8.15ab

59.62 ± 1.74bc

84.67 ± 1.76ab

177.63 ± 8.82ab

1 mM

2.98 ± 0.23ab

1.22 ± 0.12ab

209.79 ± 8.17abc

146.41 ± 3.94abc

154.18 ± 8.35ab

69.63 ± 6.62a

74.75 ± 4.64ab

88.66 ± 4.16ab

167.14 ± 9.10abc

2 mM

2.93 ± 0.35ab

1.28 ± 0.15ab

262.94 ± 14.06ab

141.96 ± 8.70abc

140.09 ± 7.40ab

67.19 ± 8.53ab

59 ± 6.20bc

99.03 ± 1.85a

140.34 ± 7.55abc

8 ds m⁻¹

control

2.38 ± 0.15b

0.98 ± 0.06b

162.81 ± 13.72bcd

162.31 ± 4.91abc

114.1 ± 4.37bcd

53.93 ± 6.30ab

70.75 ± 5.20ab

92 ± 6.65ab

144.20 ± 4.98abc

0.5 mM

2.49 ± 0.18ab

0.98 ± 0.08b

178.14 ± 10.19bcd

107.05 ± 1.26bc

117.71 ± 10.39bc

46.87 ± 6.47ab

68.5 ± 5.47ab

99.33 ± 2.33a

130.86 ± 7.32bc

1 mM

2.85 ± 0.18ab

1.05 ± 0.09ab

194.16 ± 13.77bcd

131.4 ± 5.40abc

134.82 ± 6.06bc

57.02 ± 2.90ab

67.75 ± 3.68ab

77.66 ± 3.92ab

135.03 ± 5.15bc

2 mM

2.81 ± 0.24ab

1.18 ± 0.14ab

175.68 ± 8.85bcd

116.04 ± 2.26bc

125.16 ± 14.24bc

52.03 ± 2.11ab

54.25 ± 3.56bcd

84.66 ± 8.08ab

134.47 ± 10.47bc

12 ds m⁻¹

control

2.26 ± 0.21b

0.97 ± 0.05b

210.58 ± 11.80abc

163.29 ± 4.68abc

101.17 ± 13.95d

52.68 ± 3.71ab

52.25 ± 3.47bcd

75 ± 11.53b

121.49 ± 9.12c

0.5 mM

2.84 ± 0.42ab

1.15 ± 0.16ab

220.37 ± 13.08abc

163.15 ± 7.12abc

135.68 ± 15.19bc

52.41 ± 4.03ab

50 ± 2.79d

83.66 ± 3.66ab

122.23 ± 4.42c

1 mM

2.85 ± 0.20ab

1.11 ± 0.06ab

199.68 ± 8.22bcd

148.89 ± 4.04abc

127.26 ± 15.72bcd

68.97 ± 1.38ab

61 ± 6.98bc

93.66 ± 2.96a

131.60 ± 2.53bc

2 mM

2.79 ± 0.31ab

1.12 ± 0.11ab

127.59 ± 10.54d

96.68 ± 6.78c

102.33 ± 10.22d

44.69 ± 1.02b

55.25 ± 8.50bcd

88.66 ± 4.66ab

139.44 ± 12.00abc