The Effect of Selected Chemicals on the Alkaloidal Yield of Datura Tatula Linné*

Beal, Jack L.; Christensen, B.V.; Colby, Amos B.

doi:10.1002/jps.3030430509

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…The causes of growth stimulation are still unclear. Such effects have been reported by a number of investigators, for nonionic fatty esters (Beal, Christensen and Colby, 1954;Parr and Norman, 1964) and surfactants of all four major classes (Jansen, 1961). It may be that at lower concentrations the growth-stimulating features of these, or similar, compounds simply overcome inhibitory characteristics for a net increase in fresh weight.…”

Section: Robert Ernst Joseph Arditti and Patrick L Healeysupporting

confidence: 52%

Biological Effects of Surfactants

1971

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Summary Relative phytotoxicity of purified, biodegradable surfactants was determined by observing their effects on the growth of orchid seedlings in vitro. Pronounced phytotoxic effects occurred on culture media containing high concentrations of surfactants. Concentration of ionies above 100 ppm were most damaging and also caused a 90% or greater reduction of interfacial tension. Nonionic ethoxylates reduced growth and viability at lower concentrations than ionies, but larger percentages of seedlings survived at 1000 ppm levels of these agents, which were less efficient in reducing interfacial tension. No correlation was found between biological effects and surface tension data but a coincidence may exist between interfacial tension reduction by ethoxylates and increased phytotoxicity. A number of purification procedures for surface active agents are presented as an Appendix.

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Section: Robert Ernst Joseph Arditti and Patrick L Healeysupporting

confidence: 52%

Biological Effects of Surfactants

1971

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“…The alkaloid yield of Dactura tatula was increased by 40 percent following a soil application of Tween 20 (Beal, 1954). Foliar application of the same material did not change alkaloid content.…”

mentioning

confidence: 87%

Patterns of surfactant toxicity to plant tissues

Buchanan

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“…Information is providled as to the general clhemical structures present, but the precise chemiiical compound may not be 1 Revised manuscript received Sept. 9,1963. 2 Paper 37, Plant Nutrition Laboratory. This work was supported by research grant RG-07339-02 from the National Institutes of Health.…”

Section: Methodsmentioning

confidence: 99%