Fluorescence decline ratio comparison with quantum yield ratio for plant physiological status and herbicide treatment responses

Authors

  • D.B. Horgan
  • J.A. Zabkiewicz

DOI:

https://doi.org/10.30843/nzpp.2008.61.6802

Abstract

Plant fluorescence is normally measured using the ratio Fv/Fm (quantum yield) An alternative measurement fluorescence decline ratio (Rfd) can be used instead of Fv/Fm The usefulness of the Rfd ratio in comparison to Fv/Fm was tested with three plant species of differing leaf character Diurnal trends were measured after treatment with two herbicides diuron a lipophilic photosynthesis inhibiting herbicide and dalapon a lesslipophilic nonphotosynthesis inhibiting herbicide In wheat both herbicides were tested with three nonionic surfactants of differing hydrophile lipophile balance (HLB) The Rfd ratio was a more sensitive numerical indicator of plant responses and provides an alternative approach to monitoring and measuring the effect of stress factors in plants

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Published

2008-08-01

How to Cite

[1]
Horgan, D. and Zabkiewicz, J. 2008. Fluorescence decline ratio comparison with quantum yield ratio for plant physiological status and herbicide treatment responses. New Zealand Plant Protection. 61, (Aug. 2008), 169–173. DOI:https://doi.org/10.30843/nzpp.2008.61.6802.

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