Suppression of cadmium concentration in wheat grains by silicon is related to its application rate and cadmium accumulating abilities of cultivars

摘要

BACKGROUNDCadmium concentration in food grains could be minimised through application of beneficial plant nutrients such as silicon. Therefore, the impact of silicon application on immobilisation of Cd in soil and its concentration in low and high shoot-Cd (LSCd and HSCd, respectively) cultivars of wheat were evaluated in a pot experiment. Selected LSCd cultivars (Iqbal-2000 and Lasani-2008) and HSCd cultivars (Inqlab-91 and Sehar-2006) were grown on artificially Cd contaminated soil at 10 mg Cd kg(-1). Three levels of Si (50, 100 and 150 mg kg(-1) soil), applied as calcium silicate (CaSiO3), were tested.