Breeding method of low cadmium accumulation rice

The invention discloses a breeding method of low cadmium accumulation rice. An existing low cadmium accumulation rice variety Luohong 3A or Luohong 4A is adopted as a donor and a rice variety withoutlow cadmium accumulation is adopted as a receptor for hybrid breeding of a low cadmium accumulation rice material. According to the method, the existing low cadmium accumulation rice variety is adopted as the donor and the rice variety without low cadmium accumulation is adopted as the receptor, the low cadmium accumulation rice with a homozygotic OsNRAMP5 gene deleted is screened from descendantpopulations through a specific InDel molecular marker by methods such as conventional hybridization, selfing or backcross, and the low cadmium accumulation rice material can be bred from two generations at the soonest. The method is simple, efficient, high in accuracy, short in cycle and lower in cost, does not adopt an artificial transgenosis means, and effectively relieves the problem of cadmiumcontamination of rice at p