Table 1 Seed progeny collected from a number of selected plants (Ni) surviving a specific sublethal glyphosate dose (g Ha−1) resulting in average selection intensity

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

Progeny

Environment

Glyphosate dose (g Ha−1)

Selection intensity (1−survival ratio)

Plants selected (Ni)a

Effective population size (Ne)

1a

CER

150

0.71

32

32

1b

Field

150

0.57

176

176

1c

Field

250

0.82

124

124

1d

Field

350

0.92

44

44

2a

CER

250

0.88

13

18

2b

Field

150

0.33

22

39

2c

Field

250

0.76

23

39

2d

Field

350

0.83

23

30

3a

CER

250

0.87

15

17

3b

Field

150

0.30

20

30

3c

Field

250

0.66

20

30

3d

Field

350

0.82

20

26

4a

CER

350

0.90

7

13

  1. Abbreviation: CER, controlled environment room.
  2. The effective size of the population (Ne) is calculated for each cycle of selection.
  3. aPlants grown to maturity that effectively produced seed after herbicide selection.
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