Nineteen selected EDB strains showed more than one trait of plant growth promotion. Out of 19 strains, four
strains including RR3, RR5, SR6 and SS5 were positive for all tests of plant growth-promoting activities (Table 1).
All selected EDB strains produced IAA in the presence of tryptophan, ranging from 0.85 to 16.66 μg mL−1, with the
significantly highest (P=0.05) IAA activity produced by bacteria strains PS7 and PS5 (16.67±0.42 and 16.16± 1.59 μg mL−1, respectively).
Nineteen selected EDB strains showed more than one trait of plant growth promotion. Out of 19 strains, fourstrains including RR3, RR5, SR6 and SS5 were positive for all tests of plant growth-promoting activities (Table 1).All selected EDB strains produced IAA in the presence of tryptophan, ranging from 0.85 to 16.66 μg mL−1, with thesignificantly highest (P=0.05) IAA activity produced by bacteria strains PS7 and PS5 (16.67±0.42 and 16.16± 1.59 μg mL−1, respectively).
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