Table 1 The effects of NaCl treatment on germination traits of four tomato cultivars in in vitro condition. Means followed by the same letter on columns are not significantly different at 0.05 level, according to the Duncan’s multiple range test. Data are mean ± SD (n = 4 replicates)

Germination (%)

0

80.00 ± 4.71^c

100.0 ± 0^a

95.00 ± 2.35^ab

83.33 ± 2.72^c

25

43.33 ± 2.72^e

88.33 ± 1.36^bc

90.00 ± 4.71^a-c

56.67 ± 7.2^d

50

23.33 ± 2.72^fg

81.67 ± 1.36^c

55.00 ± 2.35^d

23.33 ± 2.72^fg

75

16.67 ± 2.72^gh

63.33 ± 2.72^d

33.33 ± 2.72^ef

13.33 ± 2.72^gh

100

10.00 ± 0^h

41.67 ± 1.36^e

15.00 ± 2.35^gh

8.33 ± 1.36^h

Shoot wet weight (mg)

0

303.9 ± 0.88^b

338.0 ± 4.56^a

336.4 ± 4.47^a

242.3 ± 3.98^d

25

207.4 ± 10.39^e

288.8 ± 1.43^b

267.3 ± 1.89 ± ^c

179.3 ± 2.03^f

50

180.4 ± 3.55^f

226.2 ± 0.92^d

208.1 ± 0.83^e

132.3 ± 1.16^h

75

143.5 ± 1.69^gh

178.6 ± 1.93^f

181.9 ± 3.08^f

104.6 ± 1.07ⁱ

100

128.8 ± 0.22^h

154.2 ± 0.99^g

160.5 ± 2.86^g

80.98 ± 1.02^j

Shoot dry weight (mg)

0

80.47 ± 0.45^b

89.33 ± ^0.41a

87.57 ± 0.47^a

66.37 ± 0.69^e

25

66.43 ± 0.53^e

80.73 ± 0.59^b

75.00 ± 0.69^c

52.67 ± 0.83ⁱ

50

56.20 ± 0.91^h

69.03 ± 0.46^d

64.20 ± 0.46^f

41.40 ± 0.33^l

75

49.30 ± 0.32^j

59.17 ± 0.21^g

60.57 ± 0.62^g

36.00 ± 0.51^m

100

45.57 ± 0.28^k

54.50 ± 0.38^hi

55.73 ± 0.95^h

30.83 ± 0.36ⁿ

Shoot length (cm)

0

13.07 ± 0.11^c

14.17 ± ^0.16ab

14.37 ± 0.23^a

11.47 ± 0.19^d

25

11.67 ± 0.21^d

13.70 ± 0.18^b

12.73 ± 0.16^c

9.33 ± 0.11^g

50

9.90 ± 0.12^fg

11.73 ± 0.16^d

10.73 ± 0.16^e

7.26 ± 0.15^j

75

8.20 ± 0.14ⁱ

10.10 ± 0.11^f

9.30 ± 0.21^gh

5.73 ± 0.26^k

100

7.50 ± 0.12^j

9.30 ± 0.21^gh

8.67 ± 0.19^hi

5.50 ± 0.14^k

Root wet weight (mg)

0

90.26 ± 0.55^d

101.8 ± 2.21^a

97.42 ± 1.65^ab

77.41 ± 1.34^e

25

76.86 ± 1.81^e

95.48 ± 1.37^bc

91.38 ± 1.22^cd

59.16 ± 0.75^h

50

55.77 ± 0.63^hi

80.47 ± 0.99^e

72.25 ± 1.35^f

37.16 ± 0.94^k

75

46.80 ± 1.23^j

65.78 ± 1.18^g

59.83 ± 1.74^h

29.66 ± 1.36^l

100

36.76 ± 0.76^k

59.15 ± 1.27^h

52.85 ± 0.79ⁱ

18.65 ± 0.52^m

Root dry weight (mg)

0

28.80 ± 0.12^c

32.13 ± 0.63^a

30.70 ± 0.49^ab

24.73 ± 0.39^e

25

25.33 ± 0.51^e

31.13 ± 0.42^a

29.33 ± 0.28^bc

19.63 ± 0.23^h

50

19.23 ± 0.19^h

27.13 ± 0.43^d

24.47 ± 0.47^ef

13.00 ± 0.38^j

75

16.73 ± 0.41ⁱ

23.13 ± 0.39^f

21.07 ± 0.56^g

10.63 ± 0.49^k

100

13.47 ± 0.25^j

21.30 ± 0.41^g

18.97 ± 0.31^h

6.90 ± 0.18^l