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Table 5 Seed germination parameters for response of B. pilosa to water potential from three populations based on hydrotime model analysis for different temperatures

From: Effect of temperature and water potential on the germination of seeds from three different populations of Bidens pilosa as a potential Cd hyperaccumulator

Population

Temperature (℃)

θH (MPa·h)

ψb(50) (MPa)

σψb

R2

Baoshan

8

190.20

-0.53

0.56

0.73

12

160.23

-1.15

0.48

0.85

15

159.07

-1.32

0.52

0.89

20

66.06

-0.93

0.37

0.77

25

44.09

-0.73

0.27

0.64

30

28.06

-0.42

0.25

0.78

35

34.01

-0.22

0.16

0.93

Guilin

8

428.40

-0.90

0.43

0.86

12

279.78

-1.54

0.82

0.74

15

165.44

-1.28

0.66

0.81

20

52.00

-0.87

0.31

0.74

25

33.96

-0.72

0.26

0.77

30

43.23

-0.66

0.29

0.80

35

69.56

-0.37

0.36

0.79

Danzhou

8

313.91

-0.16

0.68

0.81

12

156.35

-1.00

0.47

0.64

15

90.21

-0.75

0.36

0.75

20

43.81

-0.79

0.30

0.73

25

34.79

-0.75

0.24

0.83

30

53.34

-0.76

0.47

0.77

35

58.23

-0.41

0.30

0.93

  1. θH = constant hydrotime, ψb(50) = median base water potential, σψb = standard deviation of ψb(50)