Genotype Difference of Brown Rices in Cd Content

A pot experiment was conducted to investigate cadmium（Cd）content in brown rices of 46 rice cultivars of 7 genotypes.Results show that the tested rice cultivars differed sharply between genotypes and vary from（0.428-2.558）(mg·kg^-1) in Cd accumulation when the soil Cd content is 2 mg·kg^-1.In terms of Cd content in grains,the 7 genotypes of rices are in the order of special rice>conventional early rice（Indianica sp.）>three-lined hybrid rice（Indianica sp.）>two-lined hybrid rice（Indianica sp.）>conventional late rice（Indianica sp.）>conventional Japonica rice>Javanica rice.