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Table 1 Coefficients of salt tolerance evaluated for each of the six main plant growth variables for the transgenic potato lines over-expression of AtHKT1 gene and the check cultivar

From: Improving salt tolerance in potato through overexpression of AtHKT1 gene

Genotypea

Daily gain in height (%)

Leaf area expansion rate (%)

Stem thickness expansion rate (%)

Relative water content (%)

Yield per plant (%)

Survival rate (%)

CK

49.7 ± 0.7 c

22.0 ± 4.9 bc

42.8 ± 0.3 d

80.0 ± 0.4 e

44.3 ± 1.6 c

52.8 ± 0.7 c

T3

82.2 ± 0.5 a

58.9 ± 1.8 a

73.3 ± 1.5 ab

95.8 ± 0.8 a

89.0 ± 1.1 a

82.6 ± 1.8 a

T13

84.4 ± 1.6 a

50.6 ± 6.6 ab

78.0 ± 0.4 a

95.7 ± 1.2 a

88.4 ± 1.1 a

85.4 ± 1.2a

T1

77.8 ± 1.5 a

37.5 ± 0.0 b

69.0 ± 2.1b

91.6 ± 0.5 b

67.9 ± 1.1 b

77.1 ± 2.1 ab

T2

67.0 ± 3.0 b

25.3 ± 1.8 bc

54.7 ± 1.1 c

87.7 ± 0.3 c

66.6 ± 0.3 b

70.8 ± 2.1 b

T5

64.2 ± 1.4 b

19.8 ± 4.4 bc

45.2 ± 2.0 d

86.6 ± 1.1 cd

62.4 ± 1.0 b

70.1 ± 2.8 b

T11

63.4 ± 3.5 b

22.6 ± 4.3 bc

41.5 ± 0.5 d

82.0 ± 0.9 d

44.3 ± 0.3 c

60.4 ± 1.2 c

T15

61.6 ± 0.9 b

16.2 ± 4.4 c

41.4 ± 1.3 d

83.8 ± 0.2 d

37.3 ± 2.1 d

59.7 ± 0.7 c

  1. aCK is the “Shepody” non-transgenic potato cultivar; the rest are transgenic potato lines. Each value ± standard error was obtained from three runs of four treatments with three replicates in each run. Within a column, a higher coefficient indicates higher salt tolerance and the different letters behind the numbers denote significant differences according to Tukey’s HSD test at P < 0.05