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应用生态学报 ›› 2001, Vol. ›› Issue (3): 455-457.

• 研究论文 • 上一篇    下一篇

铜对鹅观草两个种群生理、发育指标的影响研究

刘登义, 杨世勇, 谢建春, 赵娟   

  1. 安徽师范大学生物多样性研究中心, 芜湖 241000
  • 收稿日期:2000-11-15 修回日期:2001-02-26 出版日期:2001-05-25
  • 通讯作者: 刘登义,男,1958年9月生,博士,教授,博导.主要从事植物种群生态学、生物多样性及其保护和污染生态学研究,已发表学术论文40余篇,出版专著两部.E-mail:ldy@ mail.ahnu.edu.cn
  • 基金资助:
    安徽省教育厅自然科学重点基金资助项目(2000JI094ZD)

Physiology and development of two Roegneria kamoji populations stressed by copper

LIU Dengyi, YANG Shiyong, XIE Jianchun, ZHAO Juan   

  1. College of Life Sciences, Anhui Normal University, Wuhu 241000
  • Received:2000-11-15 Revised:2001-02-26 Online:2001-05-25

摘要: 铜尾矿上的鹅观草形态矮小,茎秆柔弱,叶色淡.而生于正常土壤上的鹅观草则茎秆粗状,叶色深.Cu胁迫可引起鹅观草叶绿素含量的降低.一定浓度范围内的Cu对鹅观草的种子萌发起促进作用,尾矿浸提液不降低种子的萌发率,但延迟种子的萌发.根生长实验表明,0.125mg·L-1Cu对鹅观草生根起促进作用,超过0.25mg·L-1则抑制鹅观草的生根,生于正常土壤上的鹅观草比生于尾矿上的鹅观草对Cu敏感.

Abstract: Roegneria kamoji grown copper tailings had weak stem,short height,and thick leave color,while its counterpart on normal soil was the opposite.Exposed to copper,R.kamoji had a decreased chlorophyll content.A certain concentration of copper could promote the seed germination of R.kamoji,and the extract of copper tailings did not decrease the seed germination rate,but deferred the germination.Root growth test indicated that when the concentration of copper was 0.125mg稬-1,the rooting of R.kamoji was promoted.If the concentration was more than 0.25mg稬-1,the rooting was inhibited significantly.R.kamoji colonized on normal soil wase more sensitive to copper than that on Cu polluted soil.

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