Table 1. Morphological Characteristics of Reference Bacterial Strains.
| colony
characteristics |
|||||
|---|---|---|---|---|---|
| isolate designation | pigmentation | shape | average size (mm) | margin | growth medium |
| B. thuringiensis | white | irregular | 6.8 | wavy | nutrient agar |
| P. mosselii | creamy white | circular | 1.15 | smooth | nutrient agar |
| S. meliloti | light pink | round | 1.26 | regular | YEM agara |
| A. chroococcum | dark brown | irregular | 10.27 | wavy | AM agarb |
YEM, yeast extract mannitol
AM, Ashby’s mannitol