Table 1.

Seed germination comparison between two seed sources of three Echinacea species under 16 h of light when seeds were not cold-moist stratified.

	Echinacea spp.
Seed source	E. angustifolia	E. pallida	E. purpurea
	__________Germination (%)__________z			Significance: P valuey
Commercial organic	68.2 ax	70.7 a	66.0 a	NS
Public germplasm	66.2 a	35.1 b	20.9 b	< 0.0001
Significance: P valuew	NS	< 0.0001	< 0.001

^zGermination was determined by counting the number of germinated seeds on day 10. Seeds were considered germinated if at least 2 mm of radicle were present.

^yP values in the last column represent comparisons among the different species within the same seed source.

^xMeans within each column not followed by the same letter are significantly different at P = 0.05 according to Fisher's test.

^NSNonsignificant at P > 0.05; P value stated otherwise.

^wP values in the last row represent comparisons between seed sources.