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Abstract

Effect of salt stress on plant biomass production and some biochemical parameters of two soybean [Glycine max (L.) Merr.] genotypes were investigated under three NaCl salinity levels (control and 3.0, 4.5 and 6.5 dsm-1). Salinity induced a marked reduction in plant height and plant biomass production in both genotypes. Chlorophyll a, chlorophyll b and total chlorophyll increased with increase in levels of salinity. A marked increase in sodium (Na+) and chloride (Cl-) contents were observed in response to salinity, whereas potassium (K+) and nitrogen contents of salt stressed plants were lower than that of controls. Genotypes did not differ significantly regarding all the parameters studied.

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