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[1]LIU Shenghong,WANG Guiying,YAN Yanru,et al.Research on Drought Resistance and Uptake Capacity of Heavy Metals of Three Kinds of Herbaceous Plants[J].Research of Soil and Water Conservation,2015,22(02):284-289.

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Research on Drought Resistance and Uptake Capacity of Heavy Metals of Three Kinds of Herbaceous Plants

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 02 Page number: 284-289 Column: Public date: 2015-04-28

Title:: Research on Drought Resistance and Uptake Capacity of Heavy Metals of Three Kinds of Herbaceous Plants

Author(s):: LIU Shenghong, WANG Guiying, YAN Yanru, LIANG Hong, ZHOU Lingyan; College of Life Science, Zhongkai Agriculture and Engineering University, Guangzhou 510225, China

Keywords:: rare earth mine area; ecological restoration; drought resistance; heavy metal enrichment

CLC:: X506

DOI:: -

Abstract:: Three kinds of herbaceous plants such as Digitaria sanguinalis, Cassia occidentalis, Vetiveria zizanioides were tested, and the physiological and biochemical responses under drought stress were studied so as to confirm their resistance to drought, simultaneously, the heavy metal uptake capacities of plants were studied so as to confirm their restorative effects of heavy metals in rare earth mine area. The results showed that POD activity, soluble protein and chlorophyll contents of three kinds of herbaceous plants increased, SOD activity decreased, however, soluble sugar showed a fall—rise—fall trend, indicating that three kinds of herbaceous plants can reduce oxidative damage by coordinating the SOD and POD activity, maintain their physiological role and the stability of chlorophyll content by regulating the soluble protein and soluble sugar content so that the plants can grow normally. And three kinds of herbaceous plants showed the strong ability to enrich a variety of heavy metals. Heavy metal contents in rare earth mine area can be effectively reduced when three kinds of herbaceous plants are grown. The results indicated that three kinds of herbaceous plants showed the good drought resistance and enrichment capability of heavy metals, and were suitable for ecological restoration in rare earth mine area.

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