Table 2.

Summary of statistics for analyzing the effects of severance treatment in (A,B) Experiment 1 and neighbor treatment in (C,D) Experiment 2 on root mass fraction (RMF) as a function of ramet total mass, and on leaf and new stolon mass as a function of root mass of P. reptans ramets, using linear mixed-effect models.

Experiment 1: The effects of severing connections					Experiment 2: Physiological self/non-self recognition
(A)	Fixed effect	RMF			(C)	Fixed effect	RMF
	Severance (S)	0.798				Neighbor (N)	0.002
	Age	0.002				Age	0.616
	Total mass (T)	0.107				Total mass (T)	<0.001
	S × T	—				N × T	0.002
(B)	Fixed effect	Leaf mass	New stolon mass		(D)	Fixed effect	Leaf mass	New stolon mass
	Severance (S)	0.481	0.134			Neighbor (N)	0.592	0.272
	Age (A)	0.378	0.106			Age (A)	<0.001	<0.001
	Root mass (R)	<0.001	<0.001			Root mass (R)	<0.001	<0.001
	S × R	—	0.047			N × R	—	—
	A × R	—	—			A × R	—	0.019

Pot was included as the random effect in the models for Experiment 1. Clonal fragment and pot were included as the random effects in the models for Experiment 2. “—” indicates that the interaction term, due to its non-significance and based on Akaike information criterion test, was excluded in the selected model. P-values (in bold when P < 0.05) are given, calculated from F statistics of type 3 hypothesis with the Kenward-Roger’s approximations for the degrees of freedom.