Table 2 Results from in vitro growth promotion assays in lettuce inoculated with Rhizobium sp. GPTR29 strain under non-saline (0 nM) and saline (100 nM) conditions
From: Effect of Rhizobium mechanisms in improving tolerance to saline stress in lettuce plants
In vitro growth promotion assays | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Treatment | Shoot length (± S.D.) (mm) | Root length (± S.D.) (mm) | Number of secondary roots (± S.D.) | Number of leaves (± S.D.) | Shoot length (± S.D.) (mm) | Root length (± S.D.) (mm) | Number of secondary roots (± S.D.) | Number of leaves (± S.D.) | |
7 dpi | 14 dpi | ||||||||
Non-saline conditions | Control | 2.61 (± 0.72)a | 2.75 (± 1.01)a | 1.87 (± 0.99)a | 2.87 (± 0.35)a | 4.99 (± 0.51)a | 3.44 (± 0.69)a | 2.83 (± 1.47)a | 3.77 (± 0.44)a |
GPTR29 | 3.45 (± 0.48)b | 3.39 (± 0.43)b | 1.87 (± 0.74)a | 2.87 (± 0.35)a | 5.26 (± 0.82)a | 3.96 (± 0.18)a | 4.08 (± 1.32)b | 3.81 (± 0.40)a | |
100 mM NaCl | Control | 1.38 (± 0.36)a | 0.66 (± 0.29)a | 2.13 (± 1.06)a | 2.47 (± 0. 52)a | 1.93 (± 0.34)a | 0.89 (± 0.32)a | 3.53 (± 1.36)a | 3.33 (± 0.49)a |
GPTR29 | 1.95 (± 0.41)b | 1.32 (± 0.42)b | 2.20 (± 1.01)a | 2.60 (± 0.51)a | 2.61 (± 0.50)b | 1.36 (± 0.33)b | 3.67 (± 1.11)a | 3.67 (± 0.49)a | |