Status of Collection, Conservation and Propagation of Rice Germplasm in China

Up to 2003, 77541 accessions of rice germplasm have been catalogued. Among them, the order of occupied percentage of several types in totally catalogued rice germplasm was local rice (68.68%), introduced rice (12.65%), wild rice (9.45%), improved rice (6.96%), three-line hybrid rice (2.09%) and genetic marker(0.16%). 69133 accessions of rice germplasm were conserved in national long term gene bank. Among them, the order of occupied percentage of several types in totally conserved rice germplasm was local rice (71.38%), introduced rice (12.16%), wild rice (8.09%), improved rice (6.52%), hybrid rice (1.54%), genetic marker (0.18%) and others (0.12%). There are very important research missions to conduct the collection and conservation of improved varieties, lines and mutants, the introduction of foreign rice germplasm, the line selection of local rice, the propagation of rice germplasm, the confirmation and utilization of selected excellent rice germplasm in the collection and conservation of rice germplasm.