Photosynthesis and Chlorophyll Fluorescence in Tall Fescue

  • J. H. Reynolds
  • C. L. Walker
  • C. L. Sams

Abstract

Measuring the photosynthetic rate of tall fescue (Festuca arundinacea) at low temperatures is difficult because dew or frost on the leaves often prevents the use of a CO2 analyzer. Chlorophyll fluorescence measurements may make it possible to estimate photosynthetic potential when it is impossible to make photosynthetic measurements. Chlorophyll fluorescence parameters used were Fo, minimum fluorescence yield, and Fm, the maximum fluorescence yield. Fv, the variable fluorescence, is the difference between Fm and Fo. The efficiency of energy conversion in photosystem II is estimated from the ratio Fv/Fm.

Keywords

Photosynthetic Rate Stomatal Conductance Chlorophyll Fluorescence Tall Fescue Fluorescence Ratio 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Poskuta, J.W., and E. Waclawczyk-Lach. 1995. In vivo responses ofprimary photochemistry of photosystem II and CO2 exchange in light and in darkness of tall fescue genotypes to lead toxicity. Acta Physiolog. Plant. 17:233–240.Google Scholar
  2. Okawara, R., and S. Kaneko. 1995. changes in photosynthetic oxygen evolution and chlorophyll fluorescence in some cool season grasses and zoysiagrasses (Zoysia spp.) from autumn to winter. Soil Sci. Plant Nutt.. 41: 801–806.Google Scholar

Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • J. H. Reynolds
    • 1
  • C. L. Walker
    • 1
  • C. L. Sams
    • 1
  1. 1.Department of Plant and Soil ScienceUniversity of TennesseeKnoxvilleUSA

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