The Relevant Analysis of Cadmium and Trace Elements in Different Rice Cultivars

In a soil pot experiment,10 rice cultivars collected from Shenyang Agricultural university with 2.5 and 10 mg·kg-1 Cd,the rice cultivars with high and low Cd content were selected and the relationship of Cd,Cu,Fe,Mn,P,Si and Zn in root,stem and brown rice were analyzed with method of variance analysis and cluster analysis.Results showed that in 10 rice cultivars,cultivar 4 and 5 were low Cd content rice cultivars,and cultivar 9 was high Cd content rice.Under the condition of 2.5 mg·kg-1 and 10 mg·kg-1 Cd addition,Cd content in brown rice of 2 rice cultivars was differ as 0.79 mg·kg-1,2.61 mg·kg-1 respectively.Cd and Mn were synergistic effect in root and stem,Cd and P were synergistic effect in stem,Cd and P were inhibitory effect in brown rice.Reducing Mn could decrease Cd accumulation in root.Increasing of P could decrease Cd content in brown rice.