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NaCl salinity-induced changes in water status, ion contents and photosynthetic properties of Shepherdia argentea (Pursh) Nutt. seedlings

Author

Listed:
  • J. Qin

    (College of Soil and Water Conservation, Beijing Forestry University, Beijing, P.R. China)

  • W.Y. Dong

    (College of Forestry, Beijing Forestry University, Beijing, P.R. China)

  • K.N. He

    (College of Soil and Water Conservation, Beijing Forestry University, Beijing, P.R. China)

  • Y. Yu

    (College of Resource and Environment, Central South University of Forest and Technology, Changsha, P.R. China)

  • G.D. Tan

    (College of Soil and Water Conservation, Beijing Forestry University, Beijing, P.R. China)

  • L. Han

    (College of Soil and Water Conservation, Beijing Forestry University, Beijing, P.R. China)

  • M. Dong

    (College of Soil and Water Conservation, Beijing Forestry University, Beijing, P.R. China)

  • Y.Y. Zhang

    (College of Soil and Water Conservation, Beijing Forestry University, Beijing, P.R. China)

  • D. Zhang

    (College of Soil and Water Conservation, Beijing Forestry University, Beijing, P.R. China)

  • A.Z. Li

    (College of Soil and Water Conservation, Beijing Forestry University, Beijing, P.R. China)

  • Z.L. Wang

    (Qinghai Academy of Agriculture and Forestry, Xining, P.R. China)

Abstract

Two-year old seedlings of Silver buffaloberry (Shepherdia argentea (Pursh) Nutt.) were exposed to NaCl salinity (0, 200, 400 and 600 mmol/l) for 30 days. Leaf water potential (Ψw), chlorophyll contents (Chl a, b, and a + b) and K+ content decreased with an increase in salinity. Relative water content (RWC) declined significantly with400 and 600 mmol/l NaCl. However, salinity induced an excessive accumulation of Na+ in the leaves of plants. Light responses of photosynthesis showed that net photosynthetic rate (PN) values were continuously raised with the increase of photosynthetic photon flux density (PPFD) at all salinity levels and plants treated with 600 mmol/l salinity suffered from photoinhibition with the lowest PN values. The reduction of PN and stomatal conductance (gs) associated with a sharp increase of intercellular CO2 concentration (Ci) in the leaves at 600 mmol/l salt-treated plants showed that non-stomatal limitations might have prevailed over stomatal limitations under severe saline conditions, due to severe cellular dehydration, inhibited synthesis of chlorophyll and ionic imbalance and toxicity. It is concluded that S. argentea possesses high salt tolerance capacity and can be widely cultivated in salt-affected areas.

Suggested Citation

  • J. Qin & W.Y. Dong & K.N. He & Y. Yu & G.D. Tan & L. Han & M. Dong & Y.Y. Zhang & D. Zhang & A.Z. Li & Z.L. Wang, 2010. "NaCl salinity-induced changes in water status, ion contents and photosynthetic properties of Shepherdia argentea (Pursh) Nutt. seedlings," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 56(7), pages 325-332.
    • Handle: RePEc:caa:jnlpse:v:56:y:2010:i:7:id:209-2009-pse
    DOI: 10.17221/209/2009-PSE
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    References listed on IDEAS

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    1. I. Afzal & S. Rauf & S.M.A. Basra & G. Murtaza, 2008. "Halopriming improves vigor, metabolism of reserves and ionic contents in wheat seedlings under salt stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 54(9), pages 382-388.
    2. E. Yildirim & H. Karlidag & M. Turan, 2009. "Mitigation of salt stress in strawberry by foliar K, Ca and Mg nutrient supply," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 55(5), pages 213-221.
    3. A.D. Patel & A.N. Pandey, 2008. "Growth, water status and nutrient accumulation of seedlings of Holoptelea integrifolia (Roxb.) Planch in response to soil salinity," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 54(9), pages 367-373.
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