Fig. 1.

Visual representation of [¹⁴C]2,4-D translocation in susceptible (A–E), resistant R1 (F), and resistant R2 (G) wild radish seedlings. Photographs of each plant are shown to the left in each panel, and the corresponding phosphorimage of ¹⁴C localization to the right. Hydroponically grown seedlings were spotted with [¹⁴C]2,4-D on a single leaf (indicated with an arrow on the photograph) 8h after addition of 10 μM NPA (B), TIBA (C), verapamil (D), valspodar (E), or a solvent control (A, F, G) to the nutrient solution, and harvested after a further 24h. Representative plants from three independent replicates are shown, with close-ups of the treated leaves from A–G shown in H–N.