Table 3: values of the analysis of similarity of the diversity of the cultivated diazotrophic bacterial community determined through Polymerase Chain Reaction (BOX-PCR) in different niches of plant/bacteria association in B. decumbens Stapf. pasture in different stages of degradation.

Degradation stage and association regionP1-R1P2-R2P3-R3P1-E4P2-E5P3-E6

P1-R
P2-R0.113
P3-R0.1090.076
P1-E0.2410.2300.210
P2-E0.0890.1540.0540.192
P3-E0.0620.1410.2140.1440.113

1-R = highly degraded pasture and rhizospheric soil niche; 2P2-R = partially degraded pasture and rhizospheric soil niche; 3P3-R = slightly degraded pasture and rhizospheric soil niche; 4P1-E = highly degraded pasture and root-endophytic niche; 5P2-E = partially degraded pasture and root-endophytic niche; 6P3-E = slightly degraded pasture and root-endophytic niche.