GROWTH, WATER STATUS AND NUTRIENT ACCUMULATION OF SEEDLINGS OF ACACIA SENEGAL (L.) WILLD. IN RESPONSE TO SOIL SALINITY

Authors

  • Amar Nath Pandey
  • Seema Abhay Hardikar
Keywords: Soil salinity, Seedling growth, Proline content, Water potential, Macro- and micro-nutrients, Salt tolerance

Abstract

Greenhouse experiments were conducted to assess the effects of soil salinity on emergence, growth, water status, proline content and mineral accumulation of seedlings of Acacia senegal (L.) Willd. (Mimosaceae). NaCl was added to the soil and salinity was maintained at 0.2, 3.9, 6.2, 8.1, 10.0 and 11.9 dSm-1. Salinity caused reduction in water content and water potential of tissues, which resulted in internal water deficit to plants. Consequently, seedling growth significantly decreased with increase in soil salinity. Proline content in tissues increased with increase in soil salinity. There were no effective mechanisms to control net uptake of Na and its transport to shoot tissues. N, P, K and Ca content significantly decreased in tissues in response to salinity. Changes in tissues and whole-plant accumulation patterns of other elements, as well as possible mechanisms to avoid Na toxicity in this tree species in response to salinity, are discussed.

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Author Biographies

Amar Nath Pandey

Department of Biosciences, Saurashtra University, Rajkot, 360005 India

Seema Abhay Hardikar

Department of Biosciences, Saurashtra University, Rajkot, 360005 India
How to Cite
Pandey, A. N., & Hardikar, S. A. (2008). GROWTH, WATER STATUS AND NUTRIENT ACCUMULATION OF SEEDLINGS OF ACACIA SENEGAL (L.) WILLD. IN RESPONSE TO SOIL SALINITY. Anales de Biología, (30), 17–28. Retrieved from https://revistas.um.es/analesbio/article/view/54161
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