Fig. 4.

Metabolism of 2,4-D in wild radish plants. Extracts from [¹⁴C]2,4-D-treated plants were analysed by TLC, alongside a [¹⁴C]2,4-D standard. (A) Representative TLC separation of extracts from the susceptible (S) and resistant (R1 and R2) biotypes, harvested 96h after application of [¹⁴C]2,4-D to leaves of intact plants. (B) Quantification of ¹⁴C signals from parent [¹⁴C]2,4-D and its metabolites. Values are means ±SE of four independent experiments; different letters within bars denote significant differences (P<0.05) between means.