High-resolution Mapping And Function Redundancy Analysis Of Key Genes Controlling Floral Development In Rice

fzp and dro are mutants of two key genes that control the differentiations and developments of spikelet and sexual organs (pistil and stamen) in rice, respectively. Cloning and functional characterization of the two genes, FZP(t) and DRO(t), would be very helpful for deep understanding of the mechanisms of floral development hi rice. FZP(t) had previously been located between two SSR markers, RM172 and RM18, on chromosome 7. hi this study, high-resolution mapping of FZP(t) was performed based on the previous result. In addition, the function redundancy between DRO(t) and OsMADSS, a rice gene homologous to the Arobidopsis class-C gene AG for floral development, was investigated by transferring OsMADSS into dro mutant and its wild-type isogenic line. Major results are as follows:1. Two CAPS markers (RCAPS1 and RCAPS2) and one SSR marker