Non-target site-based resistance to tribenuron-methyl and essential involved genes in Myosoton aquaticum (L.)

BMC Plant Biology

Table 1 GR₅₀ and I₅₀ values of the susceptible (S) and resistant (MR) Myosoton aquaticum population for tribenuron-methyl

Herbicide	GR₅₀ (g ai ha⁻¹)^a			I₅₀ (μM)^b
Herbicide	S	MR	RI^c	S	MR	RI^c
Tribenuron-methyl	0.27 ± 0.09	1.66 ± 0.72	6.15	0.34 ± 0.05	0.42 ± 0.17	1.24
Tribenuron-methyl+malathion	0.16 ± 0.09	0.30 ± 0.10	1.88	_	_	_

The level of resistance (RI) indicated by the MR/S ratios. Each value represents the mean (±SE) of two experiments, each containing three replicates
^aGR₅₀, herbicide rate causing 50% growth reduction of plants
^bI₅₀, herbicide concentration causing 50% inhibition of the ALS activity
^cRI (resistance index) = GR₅₀ or I₅₀ (MR)/GR₅₀ or I₅₀ (S)

ISSN: 1471-2229