Abstract:

To select peanut cultivars of low absorption in different soil and improve the quality of peanut, a pot experiment was conducted with one kernel variety of ‘Baisha 1016’ under two soil of types (burozem and fluvo-aquic soil) to study the effect of the two soil types on characteristics of Cd accumulation in kernels of peanut (Arachis hypogaea L.). The results indicated that biomass of peanut kernel in two types of soil tread with the same Cd concentration have no significant at 95% probability .Within the range of soil Cd treatments in the experiment, the biomass of peanut kernels exhibited the phenomenon of “hormesis effect” with the increasing of Cd concentrations in soil. Bioaccumulation factor (BF) of Cd in kernels of peanut decreased significantly (P<0.05) with the increasing of Cd concentrations in soil and there was no significant difference between the two types of soil (P>0.05). Cd contents and bioaccumulation capacity in kernels of peanut increased significantly (P<0.05) with the increasing of Cd concentrations in soil and were higher in burozem than that in fluvo-aquic soil. The effect of soil type on Cd accumulation in kernels of peanut was mainly reflected in the bioaccumulation capacity of Cd in kernels of peanut. Peanut kernels accumulation ability to Cd in soil was related with the soil pH, redox potential and so on.