Table 1.

Effects of CO₂ treatment, Latitude of origin, and CO₂ × latitude interactions on phase lengths (number of days from: germination to flowering; onset of flowering to senescence; germination to senescence)

Source	df	df den	F	Prob > F
Length of pre-flowering phase
CO2	2	1108	4.358	0.013
Latitude	2	1108	508.41	<0.001
Chamber(CO2)	9	1108	3.079	0.001
Latitude × chamber(CO2)	18	1108	2.02	0.007
CO2 × latitude	4	1108	3.11	0.015
Length of flowering phase
CO2	2	1106	2.513	0.081
Latitude	2	1106	37.9	<0.001
Chamber(CO2)	9	1106	3.513	0.001
Latitude × chamber(CO2)	18	1106	2.45	0.001
CO2 × latitude	4	1106	1.312	0.263
Length of life cycle
CO2	2	1100	0.7894	0.454
Latitude	2	1100	327.31	<0.001
Chamber(CO2)	9	1100	2.71	0.004
Latitude × chamber(CO2)	18	1100	2.33	0.001
CO2 × latitude	4	1100	3.572	0.007

For morphological traits, see Table 2