摘要 : The present investigation was conducted to evaluate salt tolerance in nine genotypes of soybean (Glycine max L.).Ten-day-old seedlings, grown hydroponically, were treated with 0, 25, 50, 75, 100, 125 and 150 mM NaC1 for fivedays. ... 展开 The present investigation was conducted to evaluate salt tolerance in nine genotypes of soybean (Glycine max L.).Ten-day-old seedlings, grown hydroponically, were treated with 0, 25, 50, 75, 100, 125 and 150 mM NaC1 for fivedays. Growth, lipid peroxidation and antioxidant enzyme activities were evaluated. Growth, measured in terms oflength, fresh weight and dry weight of plants, was drastically reduced in PK-416, while there was little effect ofNaCl treatment on Pusa-37 genotype of soybean. A high level of lipid peroxidation was observed in PK-416 asindicated by increased level of malondialdehyde. Activities of superoxide dismutase, catalase, ascorbateperoxidase and glutathione reductase were maximum in Pusa-37 where 9-fold, 1-fold, 5-fold and 6-fold increasesover control were observed, respectively. The results suggested that PK-416 and Pusa-37 are salt-sensitive andsalt-tolerant genotypes of soybean, respectively, and antioxidant defence systems involved in conferring thesensitiveness and tolerance in these genotypes. 收起