title: Accumulation and resistance to copper of two biotypes of Cynodon dactylon.
abstract: The effects of copper accumulation and resistance in two biotypes of Cynodon dactylon were studied. Results showed that at a low concentration of copper (<100 mg/kg), the growth of Cynodon dactylon was generally unaffected. As copper concentration increased, negative effects on the growth of Cynodon dactylon became apparent. The critical concentration at which the plant exhibited poisoning symptoms was different for the two biotypes of Cynodon dactylon. At 500 mg/kg copper concentration in soil, the biotype from the polluted area showed significantly higher tolerance of copper than the biotype from the unpolluted area.
authors.affiliation: College of Life Science, Anhui Normal University, No. 1 Beijing East Road, 241000 Wuhu, Anhui, People's Republic of China. wybzl@tom.com
authors.forename: Youbao
authors.initials: Y
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Jing
authors.initials: J
authors.lastname: Yao
authors.forename: Yongjie
authors.initials: Y
authors.lastname: Huang
authors.forename: Mi
authors.initials: M
authors.lastname: Yan
mesh_terms: D000064:Acclimatization / Q000502:physiology*; D001673:Biodegradation, Environmental; D003300:Copper / Q000032:analysis / Q000378:metabolism*; D019327:Copper Sulfate / Q000032:analysis / Q000378:metabolism / Q000633:toxicity; D031744:Cynodon / Q000737:chemistry / Q000145:classification / Q000502:physiology*; D004784:Environmental Monitoring; D007220:Industrial Waste; D008906:Mining; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*; D013045:Species Specificity
chemical_list: D007220:Industrial Waste; D012987:Soil; D012989:Soil Pollutants; D003300:Copper; D019327:Copper Sulfate