Ys. Liu et al., INHERITANCE AND MAPPING OF EMBRYO SAC ABORTION IN HYBRID BETWEEN INDICA AND JAPONICA RICE (ORYZA-SATIVA L.), SCIENCE IN CHINA SERIES C-LIFE SCIENCES, 41(3), 1998, pp. 272-277
doubled haploid (DH) population derived from anther culture of Fl's be
tween an Indica var. Zhai-Ye-Qing 8 and Japonica var. Jing-Xi17 as wel
l as two backcross populations derived from this DH population were us
ed to investigate inheritance of the embryo sac abortion at early mega
gametogenesis occurring in Indica/Japonica rice crosses. Two major loc
i, dominant and complementary esa-1 and esa-2, located on chromosomes
6 and 12 respectively, were detected. Generic analysis indicated that
embryo sac fertility is mainly regulated by the gametophytic genotype
at these two loci.