Table 4.

Total amount of imazamox (expressed in µmol) and its metabolites (Mt) in two E. heterophylla biotypes (S, susceptible; R, resistant) at different times in shoot, root and nutrient solution of hydroponically grown plants.

Plant section	Biotype	Hours after treatment
		6		12		24		48		96		168
		Imazamox	Mt	Imazamox	Mt	Imazamox	Mt	Imazamox	Mt	Imazamox	Mt	Imazamox	Mt
Shoot	S	0.526 ± 0.028a	—	0.470 ± 0.036a	—	0.405 ± 0.015a	—	0.296 ± 0.001a	—	0.262 ± 0.001b	—	0.219 ± 0.001c	—
	R	0.503 ± 0.023a	—	0.426 ± 0.005b	—	0.388 ± 0.003b	—	0.240 ± 0.002b	—	0.129 ± 0.001d	—	0.083 ± 0.001e	—
Root	S	0.032 ± 0.002c	—	0.090 ± 0.006d	—	0.135 ± 0.002c	—	0.117 ± 0.002d	—	0.084 ± 0.001e	—	0.118 ± 0.002d	—
	R	0.044 ± 0.004b	—	0.124 ± 0.008c	—	0.137 ± 0.001c	—	0.096 ± 0.001e	—	0.042 ± 0.001 f	—	0.033 ± 0.002 f	—
Solution	S	0.010 ± 0.005d	—	0.011 ± 0.002e	—	0.033 ± 0.001e	—	0.093 ± 0.002e	—	0.217 ± 0.015c	—	0.245 ± 0.015b	—
	R	0.010 ± 0.003d	—	0.014 ± 0.003e	—	0.046 ± 0.001d	—	0.227 ± 0.015bc	—	0.371 ± 0.005a	—	0.460 ± 0.005a	–

±Standard error of the mean (n = 5). Means followed by the same letter per column does not differ by the Tukey test (P < 0.05).