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

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

Herbicide GR50 (g ai ha−1)a I50 (μM)b
S MR RIc S MR RIc
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 _ _ _
  1. The level of resistance (RI) indicated by the MR/S ratios. Each value represents the mean (±SE) of two experiments, each containing three replicates
  2. aGR50, herbicide rate causing 50% growth reduction of plants
  3. bI50, herbicide concentration causing 50% inhibition of the ALS activity
  4. cRI (resistance index) = GR50 or I50 (MR)/GR50 or I50 (S)