High levels of nucleotide diversity and fast decline of linkage disequilibrium in rye (Secale cerealeL.) genes involved in frost response

Table 2 Genetic diversity within populations based on 37 SSR markers

Population	No. of lines	No. of private alleles ^a(%)	Average no. of alleles (range)	PIC ^b± SD	Allelic richness ^c
PR	33	20 (12.1%)	4.46 (2-12)	0.50 ± 0.02	3.43
EKO	44	14 (8.8%)	4.30 (2-18)	0.49 ± 0.03	3.28
SMH	15	3 (2.4%)	3.38 (1-9)	0.46 ± 0.03	3.18
ROM	41	13 (7.7%)	4.50 (2-13)	0.51 ± 0.01	3.38
Petkus	68	4 (3.6%)	3.00 (1-10)	0.37 ± 0.02	2.51
Mean		10.80	3.93	0.47	3.16

^a Private alleles denotes the number of alleles which occurred only in one population.
^b PIC^: Polymorphic information content, a higher value means higher genetic diversity.
^c Allelic richness is a measure of the number of alleles independent of sample size, a higher value means higher genetic diversity.

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