Effects of Lanthanum on the Growth and Physiological Characteristics of Wheat Seedlings

In this paper it was studied that effects of lanthanum on the growth and some physiological characteristics of wheat seedlings through different concentration of La3+ culturing wheat seedlings and detecting physiological measures.The results indicated that the activities of SOD under La3+(0.1,0.5mmo/L)were raised,and enzyme activity was reduced gradually as the concentration of La was increased,and activity of POD under La3+(2mmol/L) was significantly enhanced;the MDA content under La3+(1.5,2mmol/L) was remarkable increased,and the content of chlorophyll was reduced significantly when the concentration of La3+ was 1 mmol·L-1 and over,and the root dry weight of different treatments was lower than checking through keeping culture until two weeks.It can be suggested that chlorophyll content and POD activity,MDA content and dry weight of the root should be screening indexes for lanthanum-resisting wheat.