Relationships between tolerance to heavy metals in agrostis capillaris l. (a. tenuis sibth.)
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In this article, the root length and tolerance index of Agrostis capillaris L. (A. tenuis Sibth) were measured using a standard rooting test on plants originating from a copper contaminated site (Parys Mountain) and a lead-contaminated site (Goginan).Abstract:
Heavy-metal tolerance was investigated in Agrostis capillaris L. (A. tenuis Sibth.) using a standard rooting test on plants originating from a copper-contaminated site (Parys Mountain) and a lead-contaminated site (Goginan). Six F1 families obtained by interpopulation hybridization and F2 and backcross generations derived from one of them were screened. Estimates of the genetic and environmental components of phenotypic correlation were obtained in terms of both root length and tolerance index. Results are discussed in relation to problems of interpretation of evidence for multiple- or co-tolerance based on tolerance indices and phenotypic correlations.read more
Citations
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Journal ArticleDOI
Biochemical, physiological, and structural effects of excess copper in plants
TL;DR: Copper effects on plant physiology are wide ranging, including interference with fatty acid and protein metabolism and inhibition of respiration and nitrogen fixation processes, and at the whole plant level Cu is an effective inhibitor of vegetative growth and induces general symptoms of senescence.
Journal ArticleDOI
Metal tolerance in plants
TL;DR: In this paper, the authors investigated the growth performance of two populations of Silene dioica (Melandrium sylvestre), one from a copper mine and another from a non-mine soil.
Journal ArticleDOI
Strategies of heavy metal uptake by three plant species growing near a metal smelter
TL;DR: Investigation of heavy metal uptake and accumulation strategies of two absolute metallophytes and one pseudometallophyte growing near a former metal smelter finds an exclusion strategy by metal immobilisation in roots and a detoxification mechanism by leaf fall is suggested.
Journal ArticleDOI
The genetics of metal tolerance in vascular plants.
TL;DR: The study of the genetics of tolerance is of importance in planning breeding programmes to produce tolerant crops for use in areas where metal contamination is a limiting factor in productivity.
Journal ArticleDOI
Genetic control of copper tolerance in silene vulgaris
Henk Schat,W. M. Ten Bookum +1 more
TL;DR: A new type of multiple concentration test has been used to analyse the genetic control of copper tolerance in Silene vulgaris and provisional results indicate that the occurrence of any tolerance, relative to a non-tolerant reference population from uncontaminated soil, is governed by a single major gene.
References
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Book ChapterDOI
Heavy metal tolerance in plants
TL;DR: In this paper, the authors illustrate the literature on those plants and micro-organisms which can combat excessive quantities of heavy metal ions, which are poisonous and can cause death of most living organisms.
Journal ArticleDOI
Relative growth-rate: its range and adaptive significance in a local flora.
J. P. Grime,Roderick Hunt +1 more
TL;DR: The investigation described in this paper is an attempt to examine the range and pattern of variation in a local flora of one particular plant attribute-the maximum potential rate of dry matter production.
Journal ArticleDOI
Evolution in closely adjacent plant populations
TL;DR: It is invalid to conclude that a monotonic cline for reproductive isolation gives a priori evidence of its evolution in allopatry, but the existence of inverse clines in isolating mechanisms strongly suggests the evolution of isolation in sympatry.
Journal ArticleDOI
The measurement of tolerance to edaphic factors by means of root growth
TL;DR: The tolerance of plants to toxic metals is frequently measured by comparing rates of root growth in culture solutions with and without the addition of the metal, but many variants of the technique are available.