Skip to main content
. 2018 Apr 26;9:566. doi: 10.3389/fpls.2018.00566

FIGURE 2.

FIGURE 2

Auxin transport through the stem cutting base is required for adventitious root (AR) formation. (A) Representative images of adventitious rooting stages in carnation stem cuttings growing in soil plugs as defined previously (Birlanga et al., 2015). To visualize the entire root system, the soil substrate was carefully removed with pressurized water. (B) Graphic representations of rooting stage values in different carnation cultivars and treatments at 29 days, as described in Birlanga et al. (2015). Different letters indicate significant differences (P < 0.05) over sample means (cultivar × treatment). (C) Representative images of adventitious rooting in the studied carnation cultivars at 29 days treated with exogenous auxins or a polar auxin transport inhibitor (1-NOA). (D) Basipetal auxin transport parameters, transport rate (mm h-1), and transport intensity (ng IAA h-1) measured in stem cutting basal sections of the studied cultivars. Average ± standard deviation values are shown. Letters indicate significant differences (P < 0.05) over samples.