Research Article
Characterization of Rhizobia Isolated from Tigray Soil and Assessment of Their Effect on Germination and Seedling Vigor of Wheat and Field Pea
Table 5
Illustration of the phosphate solubilization features and in vitro antagonistic activities of the Rhizobial isolates.
| | Sampling site | Phosphate solubilization test | Antagonistic test | | Isolates | CD (mm) | HZD (mm) | PSI | %SE | CZD (mm) | RFG (mm) | %IRG |
| | Shiraro | SH1 | 12.33 | 4.67 | 1.38 | 37.9 | 7 | 18 | 52.6 | | SH2 | 2.00 | 0.50 | 1.25 | 25 | 5 | 22 | 42.1 | | SH3 | 8.33 | 2.83 | 1.34 | 34.0 | 3 | 20 | 47.4 | | SH4 | 6.67 | 4.33 | 1.65 | 64.9 | 1 | 25 | 34.2 | | SH5 | 6.17 | 3.00 | 1.49 | 48.6 | 2 | 25 | 34.2 |
| | Korem | KO1 | 4.00 | 4.00 | 2.00 | 100.0 | 0 | 0 | 0 | | KO2 | 4.00 | 9.00 | 1.40 | 44.0 | 0 | 0 | 0 | | KO3 | 3.00 | 5.00 | 2.67 | 60.0 | 1 | 14 | 63.2 | | KO4 | 4.00 | 6.00 | 1.70 | 66.0 | 3 | 25 | 34.2 | | KO5 | 7.67 | 6.67 | 1.87 | 87.0 | 3 | 24 | 36.8 | | KO6 | 11.00 | 1.33 | 1.12 | 12.1 | 0 | 0 | 0 | | KO7 | 10.00 | 1.67 | 1.17 | 16.7 | 0 | 0 | 0 | | KO8 | 10.67 | 0.83 | 1.08 | 7.8 | 4 | 19 | 50 |
| | Tsibet | TS1 | 9.00 | 1.17 | 1.13 | 13.0 | 0 | 0 | 0 | | TS2 | 10.00 | 2.17 | 1.22 | 21.7 | 1 | 20 | 47.4 | | TS3 | 11.00 | 1.67 | 1.15 | 15.2 | 0 | 0 | 0 | | TS4 | 10.00 | 5.67 | 1.57 | 56.7 | 1 | 20 | 47.4 |
| | Mekelle | ME1 | 5.00 | 5.00 | 2.00 | 100.0 | 1 | 15 | 60.5 | | ME2 | 4.00 | 10.00 | 1.40 | 40.0 | 1 | 14 | 63.2 | | ME3 | 9.67 | 3.67 | 1.38 | 38.0 | 0 | 0 | 0 | | ME4 | 12.00 | 1.00 | 1.08 | 8.3 | 0 | 0 | 0 | | ME5 | 4.67 | 5.33 | 2.14 | 114.1 | 9 | 19 | 50 |
| | Tanqua Abergele | TA1 | 3.00 | 5.00 | 1.40 | 60.0 | 1 | 21 | 44.7 | | TA2 | 1.00 | 8.00 | 1.20 | 13.0 | 2 | 20 | 47.4 | | TA3 | 5.00 | 7.00 | 1.70 | 71.0 | 0 | 0 | 0 | | TA4 | 5.00 | 6.00 | 1.80 | 83.0 | 0 | 0 | 0 | | TA5 | 2.00 | 3.00 | 1.60 | 67.0 | 3 | 20 | 47.4 | | TA6 | 2.50 | 4.00 | 2.60 | 63.0 | 0 | 0 | 0 | | TA7 | 1.00 | 5.00 | 1.20 | 20.0 | 0 | 0 | 0 | | TA8 | 0.00 | 0.00 | 0.00 | 0.0 | 1 | 13 | 65.8 | | TA9 | 2.00 | 3.00 | 1.60 | 67.0 | 0 | 0 | 0 | | TA10 | 1.00 | 5.00 | 1.20 | 20.0 | 6 | 21 | 44.7 |
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Key. CD: colony diameter; HZD: halozone diameter; PSI: phosphate solubilization index; %SE: present solubilization efficiency; CZD: clear zone diameter; RFG: radial fungal growth; %IRG: present inhibition in radial growth.
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