Table 2.
Effect of PGPB on photosynthetic rate of maize plants 70, 84 and 98 DAS.
| Treatment | Photosynthetic rate (μmol CO2 m−2 s−1) | ||
|---|---|---|---|
| 70 DAS | 84 DAS | 98 DAS | |
| Control | 37.5 ± 1.2cd | 37.5 ± 0.6e | 32.9 ± 0.4c |
| B. amyloliquefaciens | 39.8 ± 1.1abcd | 38.3 ± 0.3de | 33.8 ± 0.8bc |
| B. licheniformis | 40.9 ± 1.3ab | 39.2 ± 0.6de | 37.0 ± 0.5a |
| B. mojavensis | 39.6 ± 1.0abcd | 41.5 ± 0.3bc | 35.6 ± 1.0ab |
| B. pumilus | 41.8 ± 1.9a | 43.6 ± 0.6a | 34.1 ± 0.8bc |
| B. subtilis | 40.6 ± 0.2abcd | 41.9 ± 0.3ab | 35.3 ± 0.6ab |
| B. pseudomycoides | 41.6 ± 1.2a | 42.7 ± 1.0ab | 34.9 ± 0.3b |
| B. velezensis | 42.3 ± 1.0a | 42.0 ± 0.7ab | 35.5 ± 0.9ab |
| A. chroococcum | 40.7 ± 0.8abc | 41.2 ± 0.6bc | 34.6 ± 0.3bc |
| P. megaterium | 38.0 ± 0.4bcd | 40.0 ± 0.6cd | 34.6 ± 0.0bc |
| Mix | 37.4 ± 1.1d | 40.0 ± 0.6cd | 35.3 ± 0.5ab |
| Ftreat | 7.315*** | 30.250*** | 8.778*** |
DAS, days after sowing. Mix: Mix of Priestia megaterium B004 + Azotobacter chroococcum A004 with zeolite as a carrier. Means followed by the same letter for treatments are not significantly different according to Duncan test (p < 0.05). Values presented are mean values of three replicates ± standard deviation. Significance levels: ***p < 0.001.