河南农业科学 ›› 2024, Vol. 53 ›› Issue (1): 116-124.DOI: 10.15933/j.cnki.1004-3268.2024.01.013

• 园艺 • 上一篇    下一篇

铜锌复合胁迫下禾本科观赏草的富集、转运效应评价

许志敏1,2,朱峻熙1,熊志秦1,朱佳1,万艳萍1,丁国昌2   

  1. (1.江西科技学院,江西 南昌 330098;2.福建农林大学,福建 福州 350002)
  • 收稿日期:2023-08-03 出版日期:2024-01-15 发布日期:2024-02-27
  • 通讯作者: 丁国昌(1970-),男,福建长汀人,研究员,博士,主要从事园林植物与应用等研究。E-mail:fjdgc@fafu.edu.cn
  • 作者简介:许志敏(1994-),男,江西南昌人,讲师,硕士,主要从事园林植物与应用等研究。E-mail:1216125487@qq.com

Evaluation of Enrichment and Translocation Effects of Gramineae Ornamental Grasses under Copper and Zinc Combined Stress

XU Zhimin1,2,ZHU Junxi1,XIONG Zhiqin1,ZHU Jia1,WAN Yanping1,DING Guochang2   

  1. (1.Jiangxi University of Technology,Nanchang 330098,China;2.Fujian Agriculture and Forestry University,Fuzhou 350002,China)
  • Received:2023-08-03 Published:2024-01-15 Online:2024-02-27

摘要: 研究禾本科观赏草在土壤重金属铜、锌复合污染下的富集、转运效应,筛选出耐性品种,为挖掘超富集植物及推动利用植物修复铜、锌污染环境提供参考依据。以9种常见禾本科观赏草作为试验植材,设置5个胁迫梯度,采用盆栽控制法,探究供试观赏草体内铜、锌含量分布状况并分析其对铜、锌的富集能力与转运特征。结果表明,不同供试观赏草吸收重金属铜、锌的能力存在差异;不同部位吸收重金属铜、锌的能力亦差异显著,供试观赏草地上部吸收锌的能力强于地下部,而地下部吸收铜的能力强于地上部。供试观赏草富集、转移锌的能力均强于铜,在锌富集系数、转运系数方面高于铜。采用隶属函数法及Q型聚类分析法,当相对距离为7.5时,可将供试观赏草划分为高、中、低铜锌积累型3类,丽色画眉草、细叶芒综合表现最强且属于高铜锌积累型。

关键词: 禾本科观赏草, 重金属, 铜锌复合污染, 富集转运效应

Abstract: The enrichment and transport effects of Gramineae ornamental grasses under the compound pollution of soil with heavy metals copper and zinc were studied,to screen out the tolerant species and analyze their application prospects,and to provide a reference basis for exploring super‑enrichment plants and promoting the use of plants to remediate copper and zinc polluted environments. Nine common Gramineae ornamental grasses were used as the test plant materials. To investigate the distribution of copper and zinc in ornamental grasses and to analyze their copper and zinc enrichment and transport characteristics,five stress gradients were set up and the pot control method was used. The results showed that the ability of ornamental grasses to absorb heavy metals copper and zinc differed among species;the ability of different parts to absorb heavy metals copper and zinc also differed significantly,the upper part of the test ornamental grasses absorbed zinc stronger than the lower part of the ground,while the lower part of the ground absorbed copper stronger than the aboveground part. The ability of the test ornamental grasses to enrich and transfer zinc was stronger than that of copper,and zinc enrichment and transfer coefficients were higher than those of copper. By the affiliation function method and Q‑type cluster analysis,when the relative distance was 7. 5,the test ornamental grasses could be classified into high,medium and low Cu‑Zn accumulation types. Eragrostis elliotii and Miscanthus sinensis‘Gracillimus’had the strongest overall performance and belonged to the high copper and zinc accumulation type.

Key words: Gramineae ornamental grass, Heavy metal, Copper and zinc combined stress, Enrichment and transport effects

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