Table 1.
The bacterial diversity indices (at 97% sequence similarity) in bulk soils (BS), and the rhizospheres of untreated control maize plants (RhC) and of plants treated with Bio1 (RhBio1) and Bio2 (RhBio2) in two sites.
| Sites | Treatment | Number of OTUs | Chao1 Estimate of Richness | Shannon’s Diversity Index |
|---|---|---|---|---|
| Carignano | BS | 4973 ± 96a | 6135 ± 148a | 9.982 ± 0.021a |
| RhC | 4824 ± 122a | 6107 ± 65a | 9.813 ± 0.066a | |
| RhBio1 | 5035 ± 125a | 6114 ± 45a | 9.832 ± 0.115a | |
| RhBio2 | 4970 ± 258a | 6207 ± 123a | 9.883 ± 0.104a | |
| Chivasso | BS | 5522 ± 327a | 6397 ± 464a | 9.948 ± 0.244a |
| RhC | 5271 ± 132a | 6260 ± 182a | 10.005 ± 0.103a | |
| RhBio1 | 5203 ± 148a | 6242 ± 115a | 10.041 ± 0.117a | |
| RhBio2 | 5023 ± 622a | 6210 ± 130a | 10.067 ± 0.108a |
Values are means of four replicate 16S rDNA datasets. The same letter (a) indicate no significant differences between samples according to the Student Newman-Keuls method (SNK) (p ≤ 0.05).