Fig. 1. Molecular linkage maps of rice ZYQ8/JX17 RIL and DH Populations. Map function is Kosambi function. The left chromosomes are based on the RIL population and the right chromosomes are based on the DH populations. Distorted segregation regions skewing to ZYQ8 are marked with down arrows and the regions skewing to JX17 are marked with up arrows (P < 0.05). Possible position of gametophyte loci (ga) and sterility loc (S) near commonly distorted segregation chromosomal regions in the two populations are indicted by italic and bold letters to the left of the chromosomes.