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2019 | 127 | 3 | 153-162
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Analysis of net leaf photosynthesis in Aegiceras corniculatum (L.) Blanco under various saline conditions

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In the present investigation, a comparative study was made on the effect of exogenous addition of sodium chloride on net leaf photosynthesis (CO2 uptake) in Aegiceras corniculatum (L.) Blanco, a dicotyledonous mangrove species. The net leaf photosynthesis of A. corniculatum was modified in the presence of sodium chloride, it may be called a preferential halophyte. Salinity is one of the most significant environmental challenges also abiotic constraints limiting plant productivity. A. corniculatum could tolerate up to 800 mM sodium chloride concentrations. The net leaf photosynthesis rate was increased with increasing NaCl salinity up to 400 mM. This concentration was found to be the optimum salinity level for this species. In conclusion, it may be inferred that sodium chloride promoted the photosynthesis concentrations upto optimum level of 400 mM in Aegiceras corniculatum (L.) Blanco. beyond 400 mM NaCl decreased the CO2 uptake. The maximum photosynthetic obtained at 400 mM NaCl on the l20th day.
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  • Department of Botany, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
  • Department of Botany, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
  • Department of Botany, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
  • Department of Botany, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
  • P.G & Research Department of Botany, A.V.C. College (Autonomous), Mannampandal - 609305, Mayiladuthurai, Tamil Nadu, India
  • Department of Botany, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
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