Inheritance and mapping of embryo sac abortion in hybrid between Indica and Japonica rice (Oryza sativa L.).
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 complementaryesa-1 andesa-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.
Yongsheng
L
L
Institute of Genetics, Chinese Academy of Sciences, 100101, Beijing, China.
Lihuang
Z
Z
Jingsan
S
S
Lishuang
S
S
Yuzhong
W
W
Ping
H
H
Chaofu
L
L
Ying
C
C