Table 2.
Morpho-cultural characteristics of the rhizobia isolates trapped from the study farms.
| Characteristic | Isolate grouping | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| i | ii | iii | iv | v | vi | vii | vii | ix | |
| CR absorption | Na | Na | Na | Na | Na | Na | Na | Na | Na |
| BTB reaction | Y | Y | Y | Y | Y | Y | Y | Y | Y |
| Gram reaction | -ve | -ve | -ve | -ve | -ve | -ve | -ve | -ve | -ve |
| Cell Shape | Rod | Rod | Rod | Rod | Rod | Rod | Rod | Rod | Rod |
| Elevation | Cvx | Cvx | Cvx | Cvx | Cvx | Cvx | Cvx | Raised | Cvx |
| Margin | Entire | Entire | Entire | Entire | Entire | Entire | Entire | Entire | Entire |
| Colony nature | Dull | Dull | Shiny | Shiny | Dull | Shiny | Shiny | Shiny | Shiny |
| Colony colour | Cy | Cw | Mw | Mw | Mw | Mw | W | Mw | Mw |
| Transparency | Op | Trl | Trl | Op | Op | Trl | Trl | Trl | Op |
| Colony dia. (mm) | 1.5 | 3.5 | 1.0 | 3.0 | 0.5 | 3.5 | 5.0 | 1.0 | 1.0 |
| Colony texture | Fg | Fg | Sm | Sm | Fg | Sm | Sm | Fg | Sm |
| Percentage % | 4.44 | 2.22 | 28.89 | 6.67 | 8.89 | 20 | 17.78 | 4.44 | 6.67 |
Na, Non-absorbing; Y, Yellow on BTB; -ve, Negative; Cvx, Convex elevation; Ent, Entire margin; Sny, Shiny; Cy, Cream yellow; Cw, Cream white; Mw, milky white; W, watery; Op, Opaque; Trl, Translucent; Fg, Firm gummy; Sm, Soft mucoid; Diam, Colony diameter.