Table 2.
Screening of selected rhizobacterial isolates for in vitro plant growth promoting traits.
| Sl No | Strain code | Gram reaction | Cell shape | IAA production (μg ml-1) | Siderophore productionb (%) | Phosphate solubilizationc (μg ml-1) | Ammonia productiond (μmol ml-1) | ACC deaminase | Protease productionf | Cellulase production |
|---|---|---|---|---|---|---|---|---|---|---|
| (1) | KH45 | - | Rod | 43.6 ± 0.1 | 38.6 ± 1.4 | 193.4 ± 1.8 | 3.3 ± 0.1 | + | + | + |
| (2) | HK21 | + | Cocci | 18.3 ± 1.1 | 19.5 ± 0.3 | 115.6 ± 3.0 | 4.1 ± 0.04 | + | + | + |
| (3) | SN30 | + | Rod | 16.5 ± 0.2 | 24.4 ± 0.6 | 160.6 ± 4.9 | 4.4 ± 0.1 | - | + | - |
| (4) | TG30 | - | Cocci | 12.2 ± 0.2 | 14.6 ± 0.5 | 112.3 ± 4.1 | 4.1 ± 0.3 | + | - | - |
| (5) | TG24 | - | Cocci | 12.3 ± 0.6 | 21.9 ± 1.7 | 133.8 ± 1.7 | 4.5 ± 0.1 | - | + | + |
| (6) | TG27 | - | Rod | 14.6 ± 1.1 | 21.9 ± 0.9 | 143.8 ± 1.7 | 4.5 ± 0 | + | - | - |
| (7) | HK25 | - | Cocci | 12.6 ± 1.1 | 17.0 ± 0.1 | 124.7 ± 3.9 | 4.5 ± 0 | + | + | + |
| (8) | DT1 | - | Cocci | 19.6 ± 0.5 | 11.7 ± 0.2 | 182.2 ± 0.7 | 4.3 ± 0.1 | - | - | - |
| (9) | TT6 | - | Rod | 65.3 ± 0.3 | 32.8 ± 1.3 | 249.5 ± 2.3 | 4.1 ± 0.1 | + | + | + |
| (10) | KH34 | - | Rod | 11.0 ± 0.6 | 17.0 ± 0.1 | 65.5 ± 2.1 | 3.4 ± 0.6 | - | - | - |
| (11) | HK54 | - | Rod | 14.2 ± 1.7 | 12.1 ± 1.8 | 73.7 ± 1.7 | 4.2 ± 0.1 | - | - | - |
| (12) | DT15 | - | Cocci | 22.7 ± 0.5 | 23.4 ± 0.7 | 186.0 ± 1.9 | 3.7 ± 0.1 | - | + | - |
| (13) | HK27 | + | Cocci | 12.2 ± 0.1 | 7.3 ± 0.6 | 168.5 ± 3.7 | 4.2 ± 0.2 | - | - | - |
| (14) | KH49 | + | Cocci | 14.6 ± 0.1 | 21.9 ± 0.3 | 112.1 ± 1.1 | 4.9 ± 0.1 | - | - | - |
| (15) | SN22 | - | Rod | 13.7 ± 0.1 | 12.1 ± 1.3 | 124.8 ± 2.3 | 0.8 ± 0.1 | + | + | - |
| (16) | HK28 | - | Cocci | 14.3 ± 0.7 | 12.9 ± 1.0 | 129.7 ± 1.7 | 4.2 ± 0.04 | + | - | - |
| (17) | HK31 | - | Rod | 12.3 ± 0.1 | 19.5 ± 0.9 | 77.3 ± 3.3 | 4.5 ± 0 | + | + | - |
| (18) | SN27 | + | Rod | 24.8 ± 0 | 17.0 ± 0.5 | 146.4 ± 1.0 | 4.5 ± 0 | + | - | - |
| (19) | SN18 | + | Rod | 10.2 ± 0.2 | 19.0 ± 1.3 | 165.1 ± 1.1 | 4.2 ± 0.2 | + | + | - |
| (20) | HK8 | - | Rod | 13.0 ± 1.2 | 14.6 ± 0.3 | 135.2 ± 0.7 | 0.4 ± 0 | - | - | - |
| (21) | SN25 | + | Rod | 12.2 ± 0.2 | 17.0 ± 1.0 | 150.0 ± 4.6 | 3.8 ± 0.1 | + | + | + |
| (22) | HK18 | - | Cocci | 17.3 ± 0.6 | 17.0 ± 1.6 | 123.9 ± 3.3 | 4.5 ± 0 | + | + | + |
| (23) | HK36 | + | Rod | 15.3 ± 0.5 | 14.6 ± 0.3 | 140.8 ± 6.9 | 4.5 ± 0 | + | - | + |
| (24) | DT18 | - | Rod | 31.6 ± 0.5 | 14.5 ± 0.5 | 182.9 ± 2.7 | 4.5 ± 0 | - | - | - |
| (25) | DT2 | - | Rod | 10.7 ± 0.7 | 18.1 ± 0.6 | 76.6 ± 2.7 | 4.5 ± 0 | - | + | - |
| (26) | HK33 | - | Cocci | 12.2 ± 0.7 | 17.0 ± 0.2 | 108.5 ± 5.2 | 4.5 ± 0 | + | - | - |
| (27) | HK51 | - | Rod | 11.3 ± 0.1 | 12.1 ± 0.1 | 134.2 ± 0.7 | 3.9 ± 0.2 | - | - | + |
| (28) | SN29 | + | Cocci | 87.9 ± 0.8 | 39.8 ± 0.9 | 195.7 ± 2.3 | 4.4 ± 0.1 | + | + | + |
| (29) | HK20 | - | Rod | 34.3 ± 1.2 | 17.0 ± 0.3 | 167.8 ± 4.3 | 4.5 ± 0 | + | - | - |
| (30) | DT13 | - | Rod | 20.0 ± 0.8 | 11.7 ± 0.2 | 156.3 ± 3.6 | 4.3 ± 0.1 | - | - | - |
| (31) | HK26 | - | Cocci | 15.3 ± 0.3 | 17.1 ± 0.8 | 148.7 ± 2.3 | 4.5 ± 0 | + | - | - |
| (32) | HK23 | - | Cocci | 16.3 ± 0.1 | 33.8 ± 1.5 | 120.2 ± 1.5 | 0.9 ± 0 | + | + | + |
| (33) | SN28 | - | Cocci | 27.6 ± 2.3 | 21.9 ± 0.5 | 168.7 ± 3.8 | 4.2 ± 0.2 | + | + | + |
| (34) | SN23 | + | Cocci | 12.3 ± 0.3 | 19.5 ± 0.3 | 168.9 ± 0.4 | 4.4 ± 0.1 | - | + | + |
| (35) | HK38 | + | Rod | 11.5 ± 1.1 | 12.1 ± 1.3 | 130.5 ± 3.2 | 4.1 ± 0.1 | - | + | + |
| (36) | HK37 | + | Cocci | 10.7 ± 1.2 | 7.3 ± 2.0 | 95.4 ± 0.7 | 2.9 ± 0.1 | + | - | - |
| (37) | HK17 | - | Cocci | 12.2 ± 0.4 | 24.3 ± 0.4 | 176.1 ± 5.8 | 4.2 ± 0.2 | - | + | + |
| (38) | HK9 | - | Cocci | 13.7 ± 0.5 | 21.9 ± 0.3 | 187.8 ± 3.8 | 4.5 ± 0 | + | + | + |
| (39) | SN26 | - | Rod | 19.2 ± 1.1 | 19.4 ± 0.3 | 146.1 ± 4.9 | 4.4 ± 0.1 | + | - | - |
| (40) | HK19 | - | Rod | 11.0 ± 0.5 | 17.0 ± 1.0 | 97.4 ± 2.3 | 4.4 ± 0.1 | - | + | + |
| (41) | SN24 | - | Rod | 13.7 ± 1.4 | 21.9 ± 0.5 | 134.3 ± 3.0 | 3.7 ± 0.1 | - | - | - |
| (42) | HK30 | - | Rod | 16.4 ± 0.5 | 19.5 ± 0.4 | 175.3 ± 2.8 | 4.3 ± 0.2 | + | + | + |
| (43) | DT9 | + | Cocci | 10.2 ± 0.5 | 12.1 ± 0.1 | 147.9 ± 1.9 | 1.6 ± 0.1 | - | - | - |
| (44) | HK32 | + | Rod | 12.3 ± 0.1 | 9.6 ± 0.6 | 113.0 ± 3.0 | 4.5 ± 0 | + | - | + |
| (45) | HK2 | - | Cocci | 27.4 ± 0.2 | 26.8 ± 1.4 | 155.2 ± 1.5 | 4.1 ± 0.04 | + | + | + |
| (46) | KH18 | - | Cocci | 14.7 ± 0.1 | 12.1 ± 1.8 | 162.8 ± 4.1 | 4.5 ± 0 | - | - | - |
| (47) | HK29 | - | Rod | 22.5 ± 0.5 | 19.5 ± 0.5 | 156.0 ± 1.1 | 4.2 ± 0.2 | + | + | - |
| (48) | TT19 | + | Rod | 15.3 ± 0.5 | 24.2 ± 0.2 | 174.9 ± 2.0 | 0.5 ± 0.04 | + | - | - |
| (49) | TG1 | - | Rod | 92.5 ± 0.2 | 36.9 ± 0.2 | 298.2 ± 1.8 | 4.4 ± 0.1 | + | + | + |
| (50) | DT23 | - | Rod | 11.0 ± 1.2 | 16.9 ± 0.3 | 125.1 ± 2.8 | 4.4 ± 0.2 | - | - | - |
Values are mean of three replicates SD. means showed no activity and means showed activity present.