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THE ZN BIOGEOCHEMISTRY OF ARMERIA MARITIMA (MILL.) WILLD.: WITHIN AND BETWEEN POPULATION STUDIES
C. BERNARD and C. LEFÈBVRE
Belgian Journal of Botany
Vol. 134, Fasc. 1 (2001), pp. 21-28
Published by: Royal Botanical Society of Belgium
Stable URL: http://www.jstor.org/stable/20794474
Page Count: 8
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A wide range of variation of Zn concentrations in leaves occurs between individuals within an Armeria maritima population growing on Zn-rich spoil heaps from an old Zn-Pb mine. Experiments on controlled soil conditions with a metallicolous A. maritima population show that there is a family (genotypical) component for Zn leaf concentrations. Specific Plumbaginaceae-excreting glands regulate to some extent the Zn concentrations in capitulum stalks and probably leaves. Under greenhouse culture conditions, a non-tolerant coastal population can grow reasonably well for several months on an highly toxic soil, accumulating two to four times more Zn in leaves and performing better in Zn accumulation per individual than mine populations. Additional examples from populations of Thlaspi caerulescens suggest the general assumption that search for genotypes efficient for phytoremediations must not be restricted to metallophyte populations.
Belgian Journal of Botany © 2001 Royal Botanical Society of Belgium