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.
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The author acknowledges the financial support from the National Natural Science Foundation of China (No. 30470270), the Key Foundation of Education Department of Anhui Province (No. 2006KJ059A), the Foundation of the Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources in Anhui, the Key Laboratory of Biotic Environment and Ecological Safety in Anhui Province, and the Backbone Teachers in Colleges and Universities of Anhui Province.
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Wang, Y., Zhang, L., Yao, J. et al. Accumulation and Resistance to Copper of Two Biotypes of Cynodon dactylon . Bull Environ Contam Toxicol 82, 454–459 (2009). https://doi.org/10.1007/s00128-009-9640-9
- Cynodon dactylon