caa a22 4500 467902291 CHVBK 20180406152822.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1007/s10661-006-7235-z doi (NATIONALLICENCE)springer-10.1007/s10661-006-7235-z Copper Availability and Accumulation by Portulaca Oleracea Linn. Stem Cutting [Elektronische Daten] [R. Deepa, P. Senthilkumar, S. Sivakumar, P. Duraisamy, C. Subbhuraam] The Cu accumulation capacity of stem cuttings of Portulaca oleracea was assessed in two different soils, alfisol and vertisol, which differ from each other mainly due to their clay content~— several fold lower in the former than in the latter. The DTPA extractable concentration of Cu in soil and the level of its accumulation in stem cuttings were, therefore, greater in alfisol than in vertisol. In the mixed soils, the DTPA extractable as well as plant accumulated levels of Cu decreased with an increase in the proportion of vertisol. With an increase in the soil available and plant accumulated Cu, a decrease has been observed in the ability of stem cuttings to regenerate leaves and roots. As a consequence biomass reduction has been observed with an increase in the concentration of Cu in the soil and plant body. In view of comparatively low availability of Cu in vertisol, regeneration of stem cuttings occurred up to a concentration of 1600 $μ gofCu/gofsoil, whereasinalfisolitoccurredonlyupto200μ g of Cu/g of soil. The results of the present study showed that P. oleracea stem cutting is an accumulator of Cu and the availability of Cu in soils could be manipulated through addition of clay since the plant available concentration of Cu is less in the soil (vertisol) with high clay content. Springer Science + Business Media, Inc., 2006 Portulaca oleracea nationallicence accumulation nationallicence phytoextraction nationallicence clay content nationallicence soil amendments nationallicence Deepa R. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut Senthilkumar P. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut Sivakumar S. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut Duraisamy P. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut Subbhuraam C. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut Environmental Monitoring and Assessment Kluwer Academic Publishers 116/1-3(2006-05-01), 185-195 0167-6369 116:1-3<185 2006 116 10661 https://doi.org/10.1007/s10661-006-7235-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-7235-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Deepa R. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 700 1- Senthilkumar P. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 700 1- Sivakumar S. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 700 1- Duraisamy P. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 700 1- Subbhuraam C. Department of Environmental Sciences, Bharathiar University, 641 046, Coimbatore, India aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 116/1-3(2006-05-01), 185-195 0167-6369 116:1-3<185 2006 116 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer