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Publication Type J
Authors Rozema, J. and J. Van Diggelen
Title A comparative study of growth and photosynthesis of four halophytes in response to salinity
Source Acta Oecologica-International Journal of Ecology
Author Keywords salt tolerance halophytes; photosynthesis; growth; water relations aster-tripolium; salt tolerance; elongation; nitrogen; proline; plants; leaves; barley
Abstract Mean relative growth rate and net photosynthesis of Aster tripoliun, Spartina anglica, Puccinellia maritima and Elymus pycnanthus, grown in a range of NaCl concentrations in nutrient solution, were studied in a controlled environment. In all four species mean relative growth rate and net photosynthesis were reduced by NaCl. Mean relative growth rate of the most salt tolerant species, S. anglica, was significantly reduced at 450 mM NaCl. Growth of P. maritima and A. tripolium was significantly inhibited at 300 mM NaCl, and growth of E. pycnanthus, the most salt sensitive species was reduced at 150 mM NaCl. Net photosynthesis was significantly inhibited by increasing concentrations of NaCl in the nutrient solution for all four salt marsh species studied. The reduction of net photosynthesis by salinity in Spartina anglica did not differ from the inhibition found for Elymus pycnanthus. Inhibition of net photosynthesis by salinity does not seem to be the primary cause of the growth reduction measured in the four species. The various physiological causes of growth reduction by salinity are discussed.
Author Address ROZEMA, J, FREE UNIV AMSTERDAM,FAC BIOL,DEPT ECOL & ECOTOXICOL,DE BOELELAAN 1087,1081 HV AMSTERDAM,NETHERLANDS.
29-Character Source Abbreviation Acta Oecol.-Int. J. Ecol.
Year Published 1991
Volume 12
Issue 5
Beginning Page 673-681
Unique Article Identifier ISI:A1991GY96900008
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