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A doubled haploid (DH) population derived from anther culture of F-1’s between an Indica var. Zhai|Ye|Qing 8 and a Japonica var. Jing|Xi17 as well as two backcross populations derived from this DH population were used to investigate inheritance of the embryo sac abortion at early megagametogenesis occurring in Indica/Japonica rice crosses. Two major loci, dominant and complementary %esa|1% and %esa|2%, located on chromosomes 6 and 12 respectively, were detected. Genetic analysis indicated that embryo sac fertility is mainly regulated by the gametophytic genotype at these two loci.
A doubled haploid (DH) population derived from anther culture of F - 1’s between an Indica var. Zhai | Ye Qing 8 and a Japonica var. Jing | Xi17 as well as two backcross populations derived this DH population were used to investigate inheritance of the embryo sac abortion at early megagametogenesis occurring in Indica / Japonica rice crosses. Two major loci, dominant and complementary % esa | 1 % and % esa | 2 %, located on chromosomes 6 and 12 respectively, were detected. Genetic analysis indicated that embryo sac fertility is primarily regulated by the gametophytic genotype at these two loci.