Abstract
A NUMBER of collections of Agrostis tenuis and A. stolonifera have been obtained from sites contaminated by heavy metals. Some of these have been tested for tolerance of four metals, copper, nickel, zinc and lead, using as controls populations from more normal habitats. The method used in testing is derived from that of Wilkins1. The amount of root growth in solutions containing the heavy metals is expressed as a percentage of that in solutions containing none. All culture solutions contained 1 gm./l. hydrated calcium nitrate. The copper and lead were present as nitrates, the zinc and nickel as sulphates. The results are shown in Table 1, each figure being a mean value for 20 plants in two replicates.
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References
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JOWETT, D. Populations of Agrostis spp. Tolerant of Heavy Metals. Nature 182, 816–817 (1958). https://doi.org/10.1038/182816a0
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DOI: https://doi.org/10.1038/182816a0
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