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Negligible Physiological Responses to Water Deficit in Endophyte-Infected and Uninfected Perennial Ryegrass

  • D. J. Barker
  • D. E. Hume
  • P. E. Quigley

Abstract

Evidence relating improved performance of endophyte-infected perennial ryegrass during drought to plant physiological responses is equivocal. Hume et al. (1993) reported no effect of endophyte on ryegrass osmotic potential during moderate water deficit. Although evidence has shown that improved persistence of endophyte-infected tall fescue during drought is related to desirable physiological responses (West & Gwinn 1993) such evidence is sparse for ryegrass. This study aimed to compare physiological responses of “Grasslands Nui” (“Grasslands Pacific” for Exp. 2) ryegrass infected or free of “wild-type” Neotyphodium lolii endophyte, during water deficit.

Keywords

Water Deficit Relative Water Content Osmotic Potential Tall Fescue Perennial Ryegrass 
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.

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References

  1. Barker, D.J.; Davies, E.; Lane, G.A.; Latch, G.C.M.; Nott, H.M.; Tapper, B.A. 1993. Effect of water deficit on alkaloid concentrations in perennial ryegrass endophyte associations. Proc. of the 2nd Intl. Symp. on Acremonium Interactions, Palmerston North, N. Z. 4–6 Feb. 1993. pp. 67–71.Google Scholar
  2. Hume, D.E.; Popay, A.J.; Barker, D.J. 1993. Effect of Acremonium endophyte on growth of ryegrass and tall fescue under varying levels of soil moisture and Argentine stem weevil attack. Proc. of the 2nd Intl. Symp. on Acrremonium/Grass Interactions, Palm. Nth, N. Z. 4–6 Feb. 1993. pp. 161–164.Google Scholar
  3. West, C.P.; Gwinn, K.D. 1993. Role of Acremonium in drought, pest, and disease tolerances of grasses. Proceedings of the Second International Symposium on Acremonium/Grass Interactions: Plenary Papers, Palmerston North, New Zealand. 4–6 February, 1993. pp. 131–140.Google Scholar

Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • D. J. Barker
    • 1
  • D. E. Hume
    • 1
  • P. E. Quigley
    • 2
  1. 1.AgResearch — GrasslandsPalmerston NorthNew Zealand
  2. 2.Agriculture Victoria, PVIHamiltonAustralia

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