BIOAKUMULASI DAN DISTRIBUSI CD PADA AKAR DAN PUCUK 3 JENIS TANAMAN FAMILI BRASSICACEAE: IMPLEMENTASINYA UNTUK FITOREMEDIASI (Cadmium Bioaccumulation and Distribution in Root and Shoot of 3 Crops of Brassicaceae: Implication For Phytoremediation)

Plant efficiency for phytoremediation depend on total amount of metal content in the harvestable tissues of plant biomass. Cadmium accumulation in the organs of various plant species showed varying responses. Field experiment was carried out with 3 crops of family Brassicaceae, i.e. Brassica rapa var. parachinensis, Brassica rapa var. Pekinensis and Brassica oleracea var. Alboglabra on Cd-contaminated peat soil. Contaminant Cd and soil were mixed in different dosages i.e. 2 mgkg Cd, 4 mgkg Cd, 8 mgkg -1 Cd, 16 mgkg Cd and 32 mgkg Cd and used to fill growth pot (5kg/pot). The results showed that Cd accumulation in root of three crops tested greater than that in shoot. All of the three plants tested were characterized as Cd accumulator plant. Brassica oleracea var. Alboglabra was characterized by the highest Cd bioconcentration factor (BCF) and the lowest Cd shoot-root translocation factor (TF). Brassica rapa var. Parachinensis showed highest biomass (>2 times biomass of Brassica oleracea var. Alboglabra) and highest Cd translocation factor may be suitable used for phytoremediation Cd contaminated soil.