Indian Journal of Science and Technology
Year: 2010, Volume: 3, Issue: 5, Pages: 561-563
S. Dhanapackiam and M.H. Muhammad Ilyas *
PG & Research Dept. of Botany, Jamal Mohamed College (Autonomous), Trichy–620 020, TN, India
A solution culture pot study was carried out to see the effect of two contrasting salt species i.e. NaCl and Na2SO4 on the growth and physiology of Sesbania grandiflora. Na+ contents in both the salt species were 0, 10, 20, 30, 40 and 50 mM. A significant difference was observed in case of osmotic pressure of sap which indicated that NaCl had a greater effect on osmotic pressure. There were non-significant differences between the two salt species for leaf area, K+ and Na+ contents and K+ / Na+ ratio. A significant increase in osmotic pressure and Na+content in sap was observed with increasing Na+ concentrations whereas in leaf area, K+ contents of sap and K+ /Na+ ratio decreased with increasing Na+ concentrations. Leaf area of flag leaf was significantly higher in case of Na2SO4 as compared to NaCl treatments.
Keywords: Sesbania grandiflora; leaf area; salinity; ion contents; NaCl; Na2SO4
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