The Measurement of Tolerance to Edaphic Factors by Means of Root Growth

Wilkins, D. A.

doi:10.1111/j.1469-8137.1978.tb01595.x

Cited by 478 publications

(194 citation statements)

References 15 publications

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“…A modification of the rooting technique applieci b\ ' Wilkins (1957' Wilkins ( , 1978 was used. The experiment was carried out in a heated (temperature: I7°"23°C; humidity: 43-55",,) and naturally lit glasshouse supplemented with artificial lighting (liglit period/ day: 15 hours, minimum photon Hux density: 150/tEm " s ') during a perioci of three weeks in January and February.…”

Section: Sail Resistance Experimentsmentioning

confidence: 99%

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Ecological genetics of salt resistance in the clonal perennial, Agrostis stolonifera L.

Kik

1989

New Phytologist

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S U M M A i< \Large population difTcrentiation in salt resistance, as determined by a rooting technique, was detected among four ecofoKically contrasting popLihitions of A!.;ri>stis stolonifera L., with known genotypic compositions. It was found that an inland meadow population had a significantly lower salt resistance than the more maritime populations ; and that only the inland meadow population had a significant genetical component for salt resistance.The possible adapti\e \aluf of salt resi.stancc, as measured hy the rooting technique, was evaluated in a transplant experiment in a natural salt marsh. It was found that relati\-e root growth is a reasonable indicator of the complex of factors determining salt resistance. A detailed analysis of the relationship hetween salt resistance and survival within each of the four populations of A. stolonifera suggested that genotype x environment interaction and trade-oiTs hetween characters governing salt resistance might play a significant role.

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Section: Sail Resistance Experimentsmentioning

confidence: 99%

“…Wilkins, 1978). The repeatability of salt resistance and its 95 ",, confidence inter\ al was calculated for each of the four populations following Turner & Young (1969).…”

Section: Statistical Analysesmentioning

confidence: 99%

Ecological genetics of salt resistance in the clonal perennial, Agrostis stolonifera L.

Kik

1989

New Phytologist

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“…The tolerance index (Ti) was expressed on the basis of plant growth parameters, calculated as the following equation [28]:…”

Section: Evaluation Of Plant Growth and Metal Accumulationmentioning

confidence: 99%

Phytoremediation of Cadmium‐Contaminated Soil by Two Jerusalem Artichoke (Helianthus tuberosus L.) Genotypes

Long¹,

Ni²,

Wang³

et al. 2012

CLEAN Soil Air Water

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Research ArticlePhytoremediation of Cadmium-Contaminated Soil by Two Jerusalem Artichoke (Helianthus tuberosus L.) Genotypes Jerusalem artichoke (Helianthus tuberosus L.) can be used not just for bioethanol production, bur potentially also for soil phytoremediation via removal of heavy metal pollutants. An experiment was carried out to characterize the phytoextraction efficiency of two Jerusalem artichoke genotype (NY2 and NY5) in cadmium (Cd) contaminated soil. After 90 days of growth, NY5 had greater plant biomass and greater Cd accumulation in tissues than NY2. The chlorophyll content and chlorophyll a fluorescence parameters were slightly higher when plants were grown in Cd-contaminated versus control soil. It implies that this examined NY2 and NY5 can extract more Cd than some hyperaccumulators, indicating that NY2 and NY5 can be applied to clean up Cd-contaminated soils. Compared with NY2, NY5 had higher phytoextraction potential due to more biomass and higher concentrations of Cd in tissues, and may therefore be the better candidates for phytoremediation in Cd-contaminated soil.

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“…The tolerance index or Wilkins coefficient were calculated using the formula: I t = I me / I c , where I me -growth of the roots on the solution of the tested metal, I c -growth of the roots on the solution without metal [5].…”

Section: Methodsmentioning

confidence: 99%

The genetic potential of spring wheat resistance to cadmium and zinc

et al. 2016

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Abstract:The problem of obtaining safe foodstuff has remained relevant for a very long time. Long period of soil self-purification and the expensiveness of its artificial treatment forced mankind to look for new ways to solve problems related to soil pollution with heavy metals. The most perspective direction in this field is the identification of plant facilities, characterized by minimal accumulation of heavy metals. The purpose of our research is to identify wheat germplasm, resistant to heavy metals (zinc, cadmium) primarily in Eastern Kazakhstan, and discover donors for selection for metal resistance and perspective wheat forms, intended to implement into production. The research subject is various genotypes of spring wheat from the collection of Eastern Kazakhstan Agricultural Scientific Research Institute. The experiments were held in condition of modeling environmental pollution on 10-day-old sprouts of different wheat genotypes, grown on nutrient mixture, containing CaSO 4 0.1mm and Cd ions at a concentration of 40 mg/L (as CdSO 4 salt) or Zn at a concentration of 400 mg/L (as salt ZnSO 4 ). Since a direct negative impact of heavy metals on plants is displayed in inhibiting of their growth and development (root and sprout growth weakening), indicators of wheat genotypes growth processes were examined during the experiment and Wilkins coefficient was defined. The study revealed sensitive and metal resistant samples. Studies of membrane permeability for electrolytes in terms of environmental pollution by cadmium and zinc, have led to the conclusion that plant resistance can generally be caused by cell membranes' resistance to the action of the stressor. Membrane permeability for electrolytes in the most resistant wheat variety Altai changed less comparing to a more sensitive variety of spring wheat Erythrospermum-606 during the action of both cadmium and zinc. This fact proves that the overall resistance of plants may be due to stability of cell membrane to the action of the stressor.

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The Measurement of Tolerance to Edaphic Factors by Means of Root Growth

Cited by 478 publications

References 15 publications

Ecological genetics of salt resistance in the clonal perennial, Agrostis stolonifera L.

Ecological genetics of salt resistance in the clonal perennial, Agrostis stolonifera L.

Phytoremediation of Cadmium‐Contaminated Soil by Two Jerusalem Artichoke (Helianthus tuberosus L.) Genotypes

The genetic potential of spring wheat resistance to cadmium and zinc

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