Table 2.
Phosphate solubilization, IAA production, and acetylene reduction activity (ARA) in the PGPB strains isolated from Agave americana L.
| Treatment | IAA production (mg L−1) |
P-solubilization (mg L−1) |
ARAb nmol C2H4 per culture h−1 |
|---|---|---|---|
|
Pseudomonas mosselii ACO-140 |
15.7 Aa | 37.8 A | 167.1 B |
|
Acinetobacter calcoaceticus ACO-40 |
8.5 C | 29.8 B | 106.1 B |
|
Rhizobium daejeonense ACO-34A |
10.3 B | 24.7 B | 627.4 A |
|
Azospirillum brasilense Cd |
10.4 B | 24.2 B | 821.3 A |
| MSDc (p < 0.05) | 1.65 | 7.63 | 224.39 |
a
Mean values of four replicates. Means followed by the same letter do not show any significant differences (p < 0.05).
b
ARA, acetylene reduction assay (μmol C2H4 per culture fresh weigh h−1).
c
MSD, minimum significant difference.