Abstract: Heavy metal distribution in the specialized accumulating plants was
important for phytoextraction technique. Hydroponic and pot experiment were
conducted to investigated Cd phytoextraction ability and Cd distribution in the
plant of oilseed rape species. The results showed that oilseed rape Chuanyou
II-10 was more effective in phytoexetraction Cd among 21 varieties of oilseed
rape and indicator plant Indian mustard. Cd concentration in the shoot of
Chuanyou II-10 and Indian mustard gradually decreased with an increase in
growth period, while the amount of Cd uptake increased with the increase of
growth period. There was constantly decrease in Cd concentration from the base
leaves to the top leaves of Chuanyou II-10 and Indian mustard, the percentages
of Cd uptake in older leaves were higher than those of younger leaves. Older
leaves of Chuanyou II-10 and Indian mustard extracted more Cd for the Cd
contamination soil, leaves should as far as possible develop before they
reached the soil and the older leaves were harvested in priority.
Keywords: cadmium, oilseed rape, Indiar mustard, distribution