Polyploid rice breeding and detecting method with polyploid meiosis stability gene

The present invention provides polyploid rice selectively breeding and identifying method with polyploid meiosis stability (PMeS) gene. The rice selectively breeding process includes: selecting parents; hybridization or complex hybridization; back crossing; doubling chromosome; identifying polyploid; selecting bearing property; observing meiosis behavior; self-crossing to form stable line; and identifying high bearing property. The identifying indexes include: polyploid line of Asia cultivated indica type rice or japonica rice; bearing rate not lower than 65 %; normal meiosis behavior; normal pollen shape and physiological activity and normal dyed pollution with 0.1 5 I-KI not lower than 95 %; bearing rate of hybrid of PMeS polyploid rice and other polyploid rice variety over 70 % and that of PMeS polyploid rice and wild rice variety over 65 %. The present invention solves the problem of low bearing rate of polyploid rice and may be used in breeding polyploid rice variety.