【Objective】 This study aims to fine-map and clone genes related to segregation distortion(SD) by using a rice introgressive line population, and thus to explore the molecular mechanism underlying the segregation distortion in rice. 【Method】 A set of introgressive line population was constructed by using an indica/japonica combination Huazhan/Koliya. The gene loci were mapped with different genotype separation ratios of offspring as phenotypes. 【Result 】 We identified a segment on chromosome 8 that displayed obvious deviated segregation ra...