A bi-filtering method for processing single nucleotide polymorphism array data improves the quality of genetic map and accuracy of quantitative trait locus mapping in doubled haploid populations of polyploid Brassica napus

Table 1 Types and numbers of the polymorphism combinations in two parental lines

Homologous signals			Homologous/heterozygous signals
Hua5	J7005	N ^a	Hua5	J7005	N
AA	BB	262 (234)	AA	AB	240 (63)
AA	NC	44 (10)	BB	AB	313 (165)
BB	AA	264 (242)	AB	AA	209 (44)
BB	NC	78 (39)	AB	BB	358 (173)
NC	AA	27 (7)	AB	NC	11 (8)
NC	BB	26 (11)	NC	AB	18 (9)
Total		701 (543)			1149 (462)

^aThe number of the SNP loci. The number in the bracket designates the SNP locus number that exhibits segregation of three clear clusters (a cluster at least had one DH line) in the DH population.

ISSN: 1471-2164