On the Tempo of Genome Size Evolution in Angiosperms

Table 2

Parameter estimates from comparisons of single- versus two-rate models of Brownian motion (BM) and applied to both 1C DNA and 1Cx DNA content separately.

	1C DNA content				1Cx DNA content
	Single-rate	Two-rate			Single-rate	Two-rate
Clade	𝜎^2 (My^−1)	𝜎^2woody (My^−1)	𝜎^2herb (My^−1)	ΔAICc	𝜎^2 (My^−1)	𝜎^2woody (My^−1)	𝜎^2herb (My^−1)	ΔAICc
Monocotyledonae	0.0132	0.0018	0.0142	44.8	0.0055	0.0018	0.0058	17.7
Fabaceae	0.0444	0.0043	0.0552	85.4	0.0338	0.0041	0.0417	74.0

∆AICc is calculated as the AICc obtained from the single rate model minus the AICc obtained from the two-rate model, where a ∆AICc < 2 was taken as evidence for the single-rate model, whereas a ∆AICc > 2 indicated strong evidence for the two-rate model.