Genetic characterization of a core collection of flax (Linum usitatissimum L.) suitable for association mapping studies and evidence of divergent selection between fiber and linseed types

Table 1 Genetic diversity parameters of the core collection for the two major groups (G1 and G3), the admixed group (G2) and their sub-groups

Population	N¹	UH_e²	H_o³	N_a⁴	R_s⁵	∏⁶	R_a⁷	F_IS⁸	Polymorphic loci (%)	PIC⁹
Core collection	407	0.427	0.023	2202	5.68	-	1187	0.946	100	0.374
Group 1	153	0.418	0.023	1978	4.37	547	925	0.944	99.8	0.361
South Asia	92	0.348	0.020	1510	2.85	116	542	0.931	95.9	0.305
Western Europe	37	0.448	0.017	1608	3.44	246	418	0.961	97.1	0.393
South America	24	0.395	0.047	1135	2.70	27	186	0.878	91.3	0.332
Group 2
North Amer./Eur.	43	0.411	0.023	1341	2.91	32	324	0.933	96.4	0.352
Group 3	211	0.356	0.022	1613	3.44	183	683	0.933	99.1	0.332
North America	95	0.378	0.028	1362	2.69	73	424	0.932	98.6	0.334
Eastern Europe	116	0.300	0.020	1487	2.55	45	642	0.927	95.7	0.265

¹ Number of accessions.
² Unbiased gene diversity.
³ Observed heterozygosity.
⁴ Number of alleles.
⁵ Allelic richness and ⁶ number of private alleles estimated on a sample of balanced size using the rarefaction method [66].
⁷ Rare alleles < 5%.
⁸ Inbreeding coefficient.
⁹ Polymorphism information content.

ISSN: 1471-2229