Table 1.
Plant growth promoting characteristics of selected rhizobacterial isolates
| S. No. | Rhizobacterial isolates | IAA concentration (μg ml−1) | ALA concentration (μg ml−1) | Category of ACC utilizing isolates |
|---|---|---|---|---|
| 1. | BWA1 | 16.73 | 5.70 | + |
| 2. | BWA2 | 3.49 | 4.29 | +++ |
| 3. | BWA6 | 4.07 | 5.11 | ++ |
| 4. | BWA7 | 10.85 | 4.58 | − |
| 5. | BWA8 | 6.21 | 4.16 | + |
| 6. | BWA14 | 6.15 | 4.33 | ++++ |
| 7. | BWA18 | 53.80 | 4.79 | + |
| 8. | BWA19 | 3.55 | 5.00 | +++ |
| 9. | BWA20 | 4.52 | 4.37 | +++++ |
| 10. | BWA23 | 6.75 | 3.70 | +++++ |
| 11. | BWA25 | 6.78 | 7.12 | ++ |
| 12. | BWA27 | 12.00 | 5.70 | + |
| 13. | BWA29 | 6.12 | 4.70 | +++++ |
| 14. | BWA36 | 5.33 | 5.04 | + |
| 15. | BWA38 | 6.81 | 4.79 | +++++ |
| 16. | BWA40 | 6.96 | 4.29 | ++++ |
| 17. | RWA42 | 7.78 | 4.37 | − |
| 18. | RWA48 | 4.52 | 5.79 | − |
| 19. | RWA52 | 19.18 | 4.58 | ++ |
| 20. | RWA53 | 4.52 | 4.74 | − |
| 21. | RWA55 | 16.24 | 4.62 | + |
| 22. | RWA59 | 9.74 | 4.54 | + |
| 23. | RWA63 | 7.60 | 5.41 | + |
| 24. | RWA69 | 4.76 | 4.95 | ++++ |
| 25. | RWA71 | 3.89 | 4.08 | ++ |
| 26. | RWA72 | 12.12 | 4.87 | +++ |
| 27. | SYB101 | 8.62 | 9.14 | ++ |
| 28. | HMM97 | 7.66 | 5.58 | − |
| 29. | HMM8 | 5.39 | 4.95 | ++++ |
| 30. | SB153 | 5.42 | 3.87 | ++ |
Growth of rhizobacterial isolates on minimal medium supplemented with ACC is denoted as: +: less, ++: moderate, +++: good, ++++: very good, +++++: significant growth and, −: no growth