Table 2 Characteristics of S. halepense seedlings grown under different alkaloid concentrations

Root

(IV)

(III)

(II)

(I)

(IV)

(III)

(II)

(I)

Allelopathic efficiency(AE) (μg/g)

0.42

0.45

0.48

0.61

0.44

0.52

0.68

0.72

Biological absorption coefficient

0.14

0.079

0.049

0.037

0.28

0.171

0.13

0.116

Characters

Concentration of D. stramonium extract (μg/g)

Flower extract

Leaf extract

Seedling

(I)

(II)

(III)

(IV)

(I)

(II)

(III)

(IV)

Allelopathic efficiency(AE) (μg/g)

0.25

0.31

0.37

0.39

0.27

0.35

0.43

0.47

Biological absorption coefficient

0.46

0.25

0.06

0.053

0.07

0.048

0.039

0.03