TABLE 4.

Mantel test comparisons within the same plant individuals of compounds detected in hexane pollen surface washes, leaf extracts and headspace samples for premature and mature flower heads.

	Pollen washes	Leaf extracts	HS premature flower
Leaf extract	r = 0.828 P < 0.001
Headspace (HS) premature flower	r = 0.1301 P = 0.152	r = 0.147 P = 0.107
Headspace (HS) mature flower	r = 0.372 P < 0.001	r = 0.373 P < 0.001	r = 0.21 P = 0.032

N = 28 plants, merged dataset for the five chemotypes used in laboratory experiments. Significant values (P < 0.05) are highlighted in bold.