【Objective】 It is important to minimize the influx of cadmium(Cd) to the human food chain through consumption of agricultural products.The characteristics of the uptake and distribution of Cd in pollution-safe materials were studied to provide Cd safety rice germplasm resources.【Method】 A field experiment was conducted to investigate the differences of 56 rice parent materials in Cd uptake and distribution in polluted paddy field.According to cluster analysis,the pollution-safe materials werechosen by the C...