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Heavy metal tolerant Silene vulgaris plants, originating from different metalliferous sites in Germany and one in Ireland, were crossed to each other and to nontolerant plants from a nonmetalliferous site in The Netherlands. Analysis of the crosses suggested that there were two distinct major gene loci for zinc tolerance among a total of five tolerant(More)
Copper tolerance in Silene vulgaris seems to be controlled by two major genes. One segregates only in crosses to non-tolerants but never in crosses between tolerants originating from different isolated populations. The second segregates only in crosses to plants from the most tolerant population. The level of tolerance in tolerant plants seems to be(More)
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