Table 4.
Effect of temperature on the growth of selected PGPR isolates OD readings at 600 nm.
Isolates | Temp. 15°C | Temp. 25°C | Temp. 35°C | Temp. 40°C | Temp. 45°C |
---|---|---|---|---|---|
BS-27 | 0.30 ± 0.04a | 0.89 ± 0.07ab | 1.13 ± 0.04abc | 0.89 ± 0.14abc | 0.55 ± 0.05b |
FB-50 | 0.25 ± 0.07abc | 0.98 ± 0.11ab | 1.16 ± 0.02abc | 0.82 ± 0.15bc | 1.01 ± 0.09a |
RS-45 | 0.19 ± 0.04abc | 0.85 ± 0.17ab | 0.87 ± 0.05bc | 1.12 ± 0.02abc | 0.95 ± 0.11a |
FB-49 | 0.26 ± 0.05ab | 1.21 ± 0.14a | 1.36 ± 0.19ab | 1.10 ± 0.12a | 0.94 ± 0.14a |
RS-72 | 0.16 ± 0.01bc | 0.76 ± 0.05b | 1.05 ± 0.02c | 0.73 ± 0.03c | 0.29 ± 0.03b |
BS-19 | 0.22 ± 0.02abc | 0.93 ± 0.07ab | 1.39 ± 0.09a | 0.85 ± 0.07abc | 0.53 ± 0.05b |
RS-79 | 0.21 ± 0.04abc | 0.80 ± 0.13b | 1.29 ± 0.07abc | 0.73 ± 0.05c | 0.55 ± 0.03b |
PS-16 | 0.17 ± 0.02abc | 0.98 ± 0.09ab | 1.13 ± 0.07abc | 0.92 ± 0.10abc | 0.45 ± 0.07b |
BS-65 | 0.21 ± 0.03abc | 0.90 ± 0.11ab | 1.15 ± 0.09abc | 0.72 ± 0.09c | 0.54 ± 0.04b |
PS-2 | 0.12 ± 0.02c | 0.75 ± 0.06b | 1.14 ± 0.07abc | 1.07 ± 0.06ab | 0.47 ± 0.09b |
Means with the same letter down the column are not significantly different. Mean ± SD of three replicates using Duncan's multiple range test (p ≤ 0.05) n = 3. Temp = temperature.