A g reenhouse hyd roponic expe rimentwas conducedto studythe effects of cadmium (Cd; 0, 01, 10, 10 uMin nutrient solution) on yield and yield components as well as Cd concentration and accumulation in th ree cotton genopes (Simian 3, Zhongmian 16, Zhongmian 16-2). The results showed that Cd concent ration in diffe rent organs increased with increasing Cd levels in the nut rient solution in the ollowing order: root>petiole>xylem>f ruiting b ranch, leaf>phloem in vegetative organs and seed coat, seed nut>boll shell>fiber in reproductive organs There were significant genotypic differences in functional leaf and petiole Cd concent rations at 1 and 10μM Cd treatments, with the cultivar Simian 3 showing higher Cd concent rations and greater reductions in lint yield than the other two genotypes