R	Germination inhibition (I%)
R	Concentration (µg∙mL⁻¹)	L. rigidum	Barley	Oat	Rye	Wheat	Maize
H	250	74.3	80.5	12.6	18.8	34.1	31.1
H	100	17.3	39.7	0.0	0.0	5.0	0.0
CH₃O-C=O	250	100	76.9	25.0	60.4	71.4	3.7
CH₃O-C=O	100	99.2	51.2	0.0	12.3	36.0	0.0
Br⁻	250	100	93.3	29.7	41.1	67.7	0.0
Br⁻	100	100	44.3	6.1	10.0	30.0	0.0
CN	250	100	91.9	93,9	42.5	70.0	11.4
CN	100	100	11.0	42.4	17.1	16.1	0.0
OH	250	11.5	34.8	0.0	22.0	18.8	15.2
OH	100	0.0	19.2	0.0	11.4	6.0	Nd
CH₂OH	250	16.8	13.3	13.0	0.0	25.0	10.0
CH₂OH	100	0.0	0.0	0.0	0.0	7.0	Nd
COOH	250	11.5	20.0	5.0	5.9	14.3	6.6
COOH	100	0.0	5.0	0.0	0.0	0.0	0.0
CHO	250	12.4	0.0	5.0	15.0	26.7	13.7
CHO	100	0.0	0.0	0.0	0.0	0.0	Nd
Gramine	250	18.0	0.0	63.1	0.0	23.4	Nd
Gramine	100	10.0	0.0	52.6	0.0	22.9	Nd