Table 1. Estimates of mating system parameters for the six populations of Ambrosia artemisiifolia based on six microsatellite loci.

Population	tm	ts	tm−ts	F	rp
North America
LC	1.000 (0.000)	0.937 (0.020)	0.063 (0.020)	0.008 (0.020)	0.018 (0.012)
China
MD	0.979 (0.018)	0.913 (0.033)	0.065 (0.028)	0.002 (0.009)	0.034 (0.016)
SP	0.942 (0.036)	0.763 (0.040)	0.179 (0.025)	0.000 (0.000)	0.122 (0.047)
DD	0.928 (0.042)	0.753 (0.051)	0.175 (0.035)	0.000 (0.000)	0.081 (0.037)
NJ	1.000 (0.000)	0.923 (0.024)	0.077 (0.024)	0.000 (0.000)	0.028 (0.017)
NC	0.982 (0.013)	0.865 (0.032)	0.118 (0.027)	0.001 (0.009)	0.070 (0.032)

The values in brackets are S.D. The t_m, multilocus outcrossing rate; t_s, single-locus outcrossing rate; t_m−t_s, outcrossing rate between related individuals; F, inbreeding coefficient of maternal parents; r_p, the correlation of paternity or proportion of full sibs among outcrossed progeny.