Nucleotide diversity and linkage disequilibrium in 11 expressed resistance candidate genes in Lolium perenne

BMC Plant Biology

Table 6 Intragenic LD values between pairs of polymorphic sites and numbers of site pairs showing LD at P = 0.01 level within one gene

	r² Mean ± SD	Distance r² < 0.2^a	D' Mean ± SD	No of pairwise comparisons
Genes				In LD^b	Totally tested
EST1	0.11 ± 0.22	25	-0.3929 ± 0.8585	696 (13.5)	5151
EST6	0.11 ± 0.23	20	-0.4139 ± 0.8443	2032 (9.9)	20503
EST7	0.10 ± 0.22	20	-0.5966 ± 0.7678	2251 (9.2)	24531
EST26	0.11 ± 0.14	25	-0.4264 ± 0.8885	15 (12.4)	120
EST31	0.19 ± 0.26	220	-0.1701 ± 0.8141	63 (33.2)	190
EST45	0.07 ± 0.17	15	-56536 ± 0.7635	1666 (7.9)	21115
EST13	0.28 ± 0.35	300	0.02156 ± 0.9371	15 (41.7)	36
EST24	0.23 ± 0.30	500	-0.4334 ± 0.8558	223 (33.5)	666
EST28	0.54 ± 0.46	900 (1.6)	0.1887 ± 0.9804	1128 (57.8)	1953
EST39	0.29 ± 0.31	710	-0.2859 ± 0.8581	635 (54.0)	1176
EST40	0.21 ± 0.32	500	0.1158 ± 0.9085	11 (30.6)	36

r² = ZnS (Kelly 1997), average of r² over all pairwise comparisons; D' (Lewontin 1964)
^a Distance in bp, but the numbers in bracket were calculated based on the function between distance and r² in kb.
^b The significant association between polymorphic pairs determined by the two-tailed Fisher's exact test. Number in bracket means the percentage, which significant pairs accounted of total pairwise comparisons.

ISSN: 1471-2229