Effect of the La on the Growth and Development of Pea Under the Hg Stress

We have studied the effect of the La in different concentration on the pea seeds germination rate,the growth of plants,the activity of isoenzyme and the chlorophyll content of seedling under Hg stress.The results show that low concentration La(less than 0.2 mg/L) can stimulate the growth of the pea seedling under the Hg stress,increase the activity of isoenzyme and chlorophyll content of seedling,can remittence the poisoning action of the Hg,but withthe advancement of the concentration of the La,the antagonistic action of the La to the Hg fade away.whenthe concentration of Hg was more than 20 mg/L and the concentration of the La came to 0.3mg/L,the La cooperate with the Hg to aggravate the poisoning action of the pea seedling.