Plant and Soil

, Volume 103, Issue 1, pp 123–125 | Cite as

The effects of salinity on growth, nodulation and nitrogen fixation ofCasuarina equisetifolia

  • B. H. Ng
Short Communications


The growth, nodulation and nitrogen fixation ofCasuarina equisetifolia were compared at six levels (0–500mM NaCl) of salinity in sand culture. Dry weight of nodules, shoots and roots and N content of shoots increased at intermediate levels of salinity (50–100 mM) but decreased at 500 mM NaCl. Nodulation occurred at all NaCl levels, but at 500mM NaCl level, the nodule dry weight declined by 50% from the control. Increasing NaCl concentration of up to 200mM had little effect on the N2-fixation rate, but at 500mM NaCl level the rate decreased to 40% of the control value.

Key words

Casuarina growth nodulation nitrogen fixation salinity 


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  1. Aswathappa N and Bachelard E P 1986 Aust. J. Plant Physiol. 13, 533–545.Google Scholar
  2. Clemens Jet al. 1983. J. Bot. 31, 1–9.Google Scholar
  3. Doran J C and Hall V 1983In Casuarina Ecology, Management and Utilization. Eds. S J Midgleyet al., pp. 19–52, CSIRO, Australia.Google Scholar
  4. El-Lakany M H and Luard E J 1982 Aust. For. Res. 13, 11–20.Google Scholar
  5. Munns Ret al. 1982 In Encyclopaedia of Plant Physiology Vol 12C Eds. L Langeet al., pp. 60–135. Springer-Verlag: Berlin, Heidelberg, New York.Google Scholar
  6. Reddell P and Bowen G D 1985 New Phytol. 100, 115–122.Google Scholar
  7. Reddell Pet al. 1986 New Phytol. 102, 397–408.Google Scholar
  8. Torrey J 1978. Bio. Sci. 28, 586–592.Google Scholar
  9. Walsh K Bet al. 1984 Plant and Soil 81, 291–293.CrossRefGoogle Scholar

Copyright information

© Martinus Nijhoff Publishers 1987

Authors and Affiliations

  • B. H. Ng
    • 1
  1. 1.Botany DepartmentUniversity of QueenslandSt. LuciaAustralia

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