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Physiological Response and Copper and Zinc Absorption  Characteristics of Three Ornamental Grasses Under  Cadmium Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年15
Page:
72-78
Research Field:
Publishing date:

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Title:
Physiological Response and Copper and Zinc Absorption  Characteristics of Three Ornamental Grasses Under  Cadmium Stress
Author(s):
ZHAO Liqing1; 2; PENG Xiangyong2; JI Ruiqing3
(1.School of Agroforestry & Medicine,The Open University of China,Beijing 100039；2.Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091；3.Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi,Jilin Agricultural University,Changchun,Jilin 130118)
Keywords:
ornamental grass; cadmium stress; physiological index; copper; zinc; absorption characteristic
PACS:
-
DOI:
10.11937/bfyy.20170248
Abstract:
Pennisetum alopecuroides,Spodiopogon sibiricus and Miscanthus sinensis were used as materials,potted cultivation method was used to study the variation of growth height,biomass,physiological indexes and the content of cadmium,copper and zinc of three ornamental grass,which were treated by two different concentrations of cadmium（0.05，0.20 mmol?L-1）.By these studies,the theoretical basis was provided for selecting the suitable ornamental grass for city afforest,especially in soil with cadmium pollution.The results showed that the growth height and biomass of three grass were changed with the cadmium stress,Miscanthus sinensis under the cadmium stress with high concentration had difference with CK (P<0.05).The growth height of Spodiopogon sibiricus was sensitive to cadmium stress which had difference with CK (P<0.05) under low or high concentration.The growth height and biomass of Pennisetum alopecuroides did not been changed and had no difference.The free proline content of three ornamental grass and the ascorbic acid content of alopecuroides that were induced by low or high concentration cadmium had difference with CK (P<0.05),and the ascorbic acid content of Miscanthus sinensis and Spodiopogon sibiricus was increased under the cadmium stress with high cadmium concentration.The soluble protein content of three ornamental grass did not been changed with low concentration cadmium,but was decreased with high concentration cadmium and had difference with CK(P<0.05).The malonaldehyde content of Spodiopogon sibiricus was increased with the increasing of the concentration of cadmium and had difference with CK(P<0.05),but other two grass did not been changed.In conclusion,the tolerance of three ornamental grass to cadmium stress was Pennisetum alopecuroides> Miscanthus sinensis> Spodiopogon sibiricus.In addition,three ornamental grass had better capacity to accumulate cadmium,the cadmium content of three ornamental grass was increased significantly under the cadmium stress with two different cadmium concentrations.In three ornamental grass,the zinc absorption level was lower than CK significantly under the cadmium stress with two different cadmium concentrations,and the copper absorption level of three ornamental grass was increased only under the cadmium stress with high cadmium concentration.

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Last Update: 2017-08-03