Effect of copper on growth and chlorophyll content in some herbs
1998
Masarovicova, E. | Holubova, M. (Univerzita Komenskeho, Bratislava (Slovak Republic). Prirodovedecka Fakulta)
The effect of heavy metals on growth and leaf chlorophyll content of three herbs originating from tolerant and sensitive populations was studied. Seeds of the Agrostis stolonifera, Melandrium rubrum and Rumex acetosela were collected from the region with contaminated (tolerant population) and not-contaminated (sensitive population) soils. Seedlings of the above mentioned herbs were treated with different Cu concentrations and cultivated under laboratory conditions. The plants of both tolerant and sensitive populations accumulated higher Cu content in the leaves and roots. However, higher Cu content was in the roots than in the leaves as well as in the seedlings of tolerant than sensitive populations. Growth of the roots and shoots was reduced, but the first one was reduced faster. The index of tolerance (IT) was higher for the plants of tolerant population as the result of their adaptation to the higher metal content in the soil.
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