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. 2016 Sep 15;5(1):1574. doi: 10.1186/s40064-016-3232-z

Fig. 6.

Fig. 6

Inhibition and stimulation in the production of IAA in medium supplemented with 2 (control) and 200 mg L−1 of tryptophan by bacteria isolated from the rhizosphere of C. papaya L. in conventional and organic farming systems (n = 4)