Table 2. Summary statistics of genetic diversity estimators at 23 SSR loci for 167 sweet potato samples.

Group	NoA	Ho	HT	Gis
PR accessions (GAES and PGRCU)	8.65	0.80	0.80	0.00
US cultivars	4.68	0.70	0.72	0.01
PR Landraces	7.18	0.66	0.72	0.08
Groups based on STRUCTURE
G1- PR-PGRCU	6.50	0.85	0.75	−0.13
G2- PR-GAES	4.95	0.70	0.67	−0.03
G3- US cultivars	4.04	0.67	0.70	0.03
G4	5.63	0.69	0.71	0.03
G5	5.09	0.71	0.70	−0.01
G6	4.76	0.59	0.66	0.10
G7	4.49	0.68	0.67	0.00
G8	4.72	0.54	0.71	0.23
Mean	11.08	0.71	0.78	0.05
Std. Dev.	1.15	0.04	0.02	0.04

(NoA: Number of Alleles, H_o: Observed Heterozygosity, H_T: Total Heterozygosity, G_is: Inbreeding Coefficient).