Analysis of segregation distortion and its relationship to hybrid barriers in XXXX .

@entity579 @entity2167
BACKGROUND: @entity2167 ( @entity2167 ) is a frequently observed occurrence in mapping populations generated from crosses involving divergent genotypes. In the present study, ten genetic linkage maps constructed from reciprocal F2 and BC1F1 mapping populations derived from the parents Dasanbyeo (indica) and Ilpumbyeo (japonica) were used to identify the distribution, effect, and magnitude of the genetic factors underlying the mechanisms of @entity2167 between the two subspecies. RESULTS: @entity2167 loci detected in the present study were affected by male function, female function, and zygotic selection. The most pronounced @entity2167 loci were mapped to chromosome 3 (transmitted through male gametes), chromosome 5 (transmitted through male gametes), and chromosome 6 (transmitted through female gametes). The level of @entity2167 in BC1F1 populations which defined by chi-square value independence multiple tests was relatively low in comparison to F2 populations. Dasanbyeo alleles were transmitted at a higher frequency in both F2 and BC1F1 populations, suggesting that indica alleles are strongly favored in inter-subspecific crosses in @entity579 . @entity2167 loci in the present study corresponded to previously reported loci for reproductive barriers. In addition, new @entity2167 loci were detected on chromosomes 2 and 12. CONCLUSION: The identification of the distribution of @entity2167 and the effect of genetic factors causing @entity2167 in genetic mapping populations provides an opportunity to survey the whole genome for new @entity2167 loci and their relationships to reproductive barriers. This provides a basis for future research on the elucidation of the genetic mechanisms underlying @entity2167 in @entity579 , and will be useful in molecular breeding programs.
