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Table 1 Effects of different R: FR values on plant height, stem diameter, fresh and dry weights of root, stem, and leaf in tomato seedlings under salinity stress in wild type (WT) and phytochrome B1 mutant (phyB1 mutant)

From: Exposure to lower red to far-red light ratios improve tomato tolerance to salt stress

Treatments T1 T2 T3 T4 T5 T6
WT Plant height (cm) 18.43 ± 0.65c 22.83 ± 0.82b 26.30 ± 0.75a 12.92 ± 0.55e 15.78 ± 0.78d 19.32 ± 0.65c
Stem Diameter (mm) 7.37 ± 0.55a 6.29 ± 0.46b 5.89 ± 0.50bc 5.66 ± 0.55c 5.43 ± 0.53c 4.61 ± 0.17d
Fresh mass (g) Root 5.66 ± 0.22b 6.91 ± 0.41a 5.77 ± 0.40b 3.00 ± 0.20d 4.33 ± 0.35c 5.58 ± 0.30b
Stem 6.38 ± 0.25c 9.57 ± 0.34a 10.94 ± 0.34a 2.73 ± 0.16e 4.47 ± 0.28d 5.89 ± 0.29c
Leaf 14.44 ± 0.51c 22.49 ± 0.55a 19.96 ± 0.47b 7.43 ± 0.37e 10.29 ± 0.47d 13.96 ± 0.55c
In total 26.48 + 0.97c 38.97 + 0.86a 36.68 + 1.08b 13.17 + 0.90e 19.09 + 1.06d 25.44 + 1.12c
Dry mass (g) Root 0.28 ± 0.02bc 0.37 ± 0.02a 0.30 ± 0.03b 0.14 ± 0.02e 0.20 ± 0.02d 0.26 ± 0.01c
Stem 0.23 ± 0.02c 0.35 ± 0.02b 0.41 ± 0.02a 0.16 ± 0.03d 0.24 ± 0.02c 0.25 ± 0.02c
Leaf 1.16 ± 0.05c 1.61 ± 0.04a 1.40 ± 0.03b 0.51 ± 0.04e 0.78 ± 0.04d 1.13 ± 0.04c
In total 1.68 + 0.07c 2.34 + 0.06a 2.11 + 0.04b 0.82 + 0.08e 1.23 + 0.08d 1.68 + 0.02c
phyB1 mutant Plant height (cm) 25.18 ± 0.79a 24.90 ± 0.74a 25.21 ± 0.51a 16.64 ± 0.51b 16.10 ± 0.55b 16.61 ± 0.67b
Stem Diameter (mm) 5.61 ± 0.23a 5.66 ± 0.23a 5.50 ± 0.13a 4.44 ± 0.25b 4.49 ± 0.30b 4.30 ± 0.20b
Fresh mass (g) Root 2.52 ± 0.10a 2.66 ± 0.13a 2.49 ± 0.15a 1.68 ± 0.04b 1.65 ± 0.14b 1.70 ± 0.06b
Stem 6.37 ± 0.35a 6.39 ± 0.24a 6.33 ± 0.25a 3.59 ± 0.17b 3.51 ± 0.21b 3.42 ± 0.14b
Leaf 14.47 ± 0.55a 14.41 ± 0.45a 14.12 ± 0.53a 7.94 ± 0.78b 8.17 ± 0.17b 7.96 ± 0.07b
In total 23.36 ± 0.47a 23.47 ± 0.16a 22.95 ± 0.24a 13.21 ± 0.58b 13.33 ± 0.10b 13.09 ± 0.16b
Dry mass (g) Root 0.138 ± 0.005a 0.142 ± 0.006a 0.141 ± 0.015a 0.087 ± 0.006b 0.089 ± 0.010b 0.093 ± 0.015b
Stem 0.254 ± 0.017a 0.262 ± 0.026a 0.265 ± 0.015a 0.126 ± 0.017b 0.123 ± 0.005b 0.128 ± 0.010b
Leaf 1.133 ± 0.083a 1.126 ± 0.101a 1.066 ± 0.100a 0.716 ± 0.011b 0.773 ± 0.015b 0.763 ± 0.057b
In total 1.516 ± 0.083a 1.533 ± 0.100a 1.473 ± 0.120a 0.920 ± 0.017b 0.980 ± 0.010b 0.971 ± 0.072b
  1. The values (mean ± SE, n = 6) with different letter within columns are statistically different (P ≤ 0.05) according to Duncan’s multiple range test. T1, 0 mM NaCl + 7.4 R: FR; T2, 0 mM NaCl + 1.2 R: FR; T3, 0 mM NaCl + 0.8 R: FR; T4, 100 mM NaCl + 7.4 R: FR; T5, 100 mM NaCl + 1.2 R: FR; T6, 100 mM NaCl + 0.8 R: FR