Table 4 Parameters of the log–logistic model [Y=c+(d−c)/(1+(x/G)b)] used to calculate the LD50 values of selected and unselected progeny, and their R/S ratios from dose–response studies (Field)

From: Evolution of glyphosate resistance in a Lolium rigidum population by glyphosate selection at sublethal doses

Population

d

c

G

b

RMS a

LD50 (g Ha−1)

R/S

VLR1

100

0

169

3

92

169

—

1b

100

18

231

5

50

255

1.51

3b

100

27

226

5

28

268

1.59

1c

100

0

269

3

40

269

1.59

2c

100

0

333

4

71

333

1.97

3c

100

0

325

3

137

325

1.92

1d

100

1

257

2

37

260

1.54

2d

100

0

340

2

84

340

2.01

3d

100

31

237

3

80

315

1.87

  1. ANOVA analysis conducted for each non-linear regression is highly significant (P<0.001) and adjusted-R2>0.83.
  2. aResidual mean square.
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