Table 2.
Phosphate solubilization and indole acetic acid (IAA) production by Azospirillum strains (Mean ±SD).
| Name of the isolates | Indole acetic acid (mg L−1) with tryptophan | Solubilized P (mg L−1) in Pikovskaya medium | Solubilized P (mg L−1) in modified Pikovskaya medium | Solubilized P (mg L−1) in TCP-supplemented LB medium |
|---|---|---|---|---|
| Azospirillum sp. AzoK1 | 0.84 ± 0.75 | ND | 52.40 ± 3.42 | 62.10 ± 1.65 |
| Azospirillum sp. AzoK2 | 30.49 ± 1.04 | ND | 72.00 ± 2.94 | 105.50 ± 4.93 |
| Azospirillum sp. AzoK3 | 24.35 ± 0.91 | ND | 26.55 ± 2.01 | 44.60 ± 2.91 |
| Azospirillum sp. AzoK4 | 24.33 ± 3.03 | ND | ND | ND |
| Azospirillum sp. AzoK5 | 19.15 ± 1.34 | ND | 39.45 ± 3.24 | 60.50 ± 2.16 |
| Azospirillum sp. WB3 | 14.15 ± 1.48 | ND | ND | 43.65 ± 2.15 |
ND, not detected; SD, standard deviation.