紫叶李对镉?铅胁迫的生理响应

目的]研究紫叶李对重金属镉和铅胁迫的生理响应。方法]研究不同浓度镉(10、30、50、100、150、200 mg/kg)、铅(50、100、500、1 000、1 500、2 000 mg/kg)对紫叶李的相对电导率、丙二醛和叶绿素含量的影响。结果]随着镉浓度和铅浓度的升高,紫叶李的相对电导率和丙二醛含量总体呈升高趋势,叶绿素含量明显降低,在铅浓度2 000 mg/kg和镉浓度200 mg/kg时,叶绿素含量分别较对照降低60.9%和50.1%。结论]紫叶李是一种抗重金属能力较强的植物。

Physiological Response of Prunus cerasifera to Cadmium,Lead Stress

Objective] The aim was to study physiological response of Prunus cerasifera to cadmium, lead stress. Method] Effects of differ-ent concentrations of cadmium (10, 30, 50, 100, 150, 200 mg/kg) and lead(50, 100, 500, 1 000, 1 500, 2 000 mg/kg) on relative elec-trical conductivity, MDA content and chlorophyll content were studied. Result] With the increase of cadmium concentration and lead con-centration, the relative electrical conductivity and MDA content showed an increasing trend, chlorophyll content decreased significantly.When lead concentration was 2 000 mg/kg and cadmium was 200 mg/kg, the chlorophyll content was decreased by 60.9% and 50.1% respectively compared with control. Conclusion] Prunus cerasifera is a kind of heavy metal resistant plant.