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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)