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草业学报 ›› 2014, Vol. 23 ›› Issue (4): 237-244.DOI: 10.11686/cyxb20140429

• 研究论文 • 上一篇    下一篇

四种冷季型草坪草对二氧化硫胁迫的生理响应研究

孙凌霞,孙萍,蔡仕珍,李西*   

  1. 四川农业大学风景园林学院,四川成都611130
  • 收稿日期:2013-12-18 出版日期:2014-08-20 发布日期:2014-08-20
  • 通讯作者: E-mail:overseas5588@163.com
  • 作者简介:孙凌霞(1976-),女,山东茌平人,讲师,博士。E-mail:sunlingxiasicau@foxmail.com
  • 基金资助:
    四川省教育厅基金(13ZB0289)和四川农业大学双支计划资助

Physiological responses of four cold-season turfgrasses to oxidative stress of SO2

SUN Ling-xia,SUN Ping,CAI Shi-zhen,LI Xi   

  1. College of Landscape Architecture,Sichuan Agricultural University,Chengdu 611130,China
  • Received:2013-12-18 Online:2014-08-20 Published:2014-08-20

摘要: 本研究以4种冷季型草坪草高羊茅、多年生黑麦草、匍匐翦股颖、草地早熟禾为材料,采用人工模拟熏气法,以1.45,2.15,3.56和5.01 mg/m3 4个SO2浓度水平,测定4种草坪草生理生化指标,最终比较4种草坪草对SO2的抗性。结果表明,4种草坪草叶绿素含量随着SO2浓度升高而降低,丙二醛、可溶性糖和脯氨酸随着SO2浓度升高而增加。而且SOD、POD、CAT活性都随着SO2浓度升高呈现不同程度的增加。采用模糊数学隶属度对各项指标综合评定得出,4种草坪草对SO2的抗性能力由强到弱顺序为高羊茅、多年生黑麦草、匍匐剪股颖、草地早熟禾。从这些结果我们可以推断在SO2污染强的区域,适宜种植高羊茅和多年生黑麦草。

Abstract: The chlorophyll content,membrane lipid peroxidation,osmoregulation substances,and protective enzyme activity of four cold-season turfgrass species (Fescue arundinacea,Lolium perenne,Poa pratensis; Agrostis stolonifera) treated with SO2 (1.45,2.15,3.56,or 5.01 mg/m3) were measured using artificial simulation,and the resistance to sulfur was evaluated. The MDA content increased to different extents in these four turfgrass species which indicated that the membrane systems were injured under the SO2 stress. F. arundinacea and L. perenne had increased antioxidant enzyme activities (SOD,POD and CAT) and accumulated compatible solutes content (soluble sugar and proline) against low level SO2 stress but high concentrations of SO2 had a significant effect on them. Additionally,A. stolonifera and P. pratensis had a poor resistance to SO2 toxicity that was directly reflected in the observed appearance,especially for P. pratensis. The damage increased with SO2 concentration. The results of a comprehensive evaluation showed that the SO2 resistance of the four species decreased in the order F. arundinacea,L. perenne,A. stolonifera,and P. pratensis. The turfgrass species F. arundinacea and L. perenne would be suitable for urban landscaping in SO2 polluted areas.

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