TABLE 3.

Linear relationship between allelic diversity and population inbreeding load, inbreeding depression, and drift load

		Inbreeding load B			Inbreeding depression δ			Drift load
Response variable: t		R2	P	t	R2	P	t	R2	P
Sexual performance: −0.35		0.01	0.7302	−1.30	0.13	0.2196	0.87	0.06	0.4045
	Clonal performance: −0.91		0.07	0.3824	−2.76	0.41	0.0187	0.96	0.08	0.3587
Seed set	−1.30	0.13	0.2213	−1.58	0.18	0.1429	1.08	0.10	0.3032
Germination rate	−0.55	0.03	0.5926	−1.57	0.18	0.1458	1.23	0.12	0.2456
PC1-adult performance	−0.44	0.02	0.6715	−1.71	0.21	0.1159	1.05	0.09	0.3178
Seed production of   offspring		−0.69	0.04	0.5023	−2.97	0.45	0.0127	3.04	0.46	0.0113

Inbreeding load, B, is the slope of log-transformed offspring fitness of compatible within-population crosses against parental kinship coefficient, calculated for each population. Inbreeding depression in each population is δ = 1 − e^−B×F (Keller and Waller 2002), where F represents mean relatedness of all randomly performed crosses (incompatible crosses excluded). Differences in drift load are based on the comparison of mean fitness between equally outbred offspring. Fitness estimates are clonal and sexual offspring performance of crosses within populations, with results for the separate life-stage fitness components presented in italics. Underlining indicates P-values < 0.1 (N = 13).