Fig. 5
From: IAA was involved in phosphorus deficiency-induced cluster roots formation in Macadamia integrifolia
Concentrations of IAA (A) at different developmental stages (B) of cluster roots at six P supplies, and relationship between cluster roots number and IAA concentration (C). Plants were grown for four months at 0, 5, 25, 50, 100 and 200 µM P. Different lowercase letters mean a significant difference among P supplies at the same stage(P < 0.05); Different uppercase letters denote a significant difference among three stages and root apices at the same P supply(P < 0.05).
