Early effects of salinity on uptake and distribution of P, Cl, Na, K, Mg, Ca, and on nitrate reductase activity in different parts of soybean(Glycine max cv. Pershing) have been studied. By increasing salinity in the medium, content of above elements, changed differently in different parts of examined plants, but in aerial parts from whole seedling content, increased. It seems that the Pershing cultivar of soybean, can be classified in "leaf accumulators" of P and Cl All of the seedling parts, including, roots, hypocotyl, cotyledons, epicotyl, and leaves showed nitrate reductase activity, that was statistically affected differently, regarding different saline treatments, and assayed seedling parts. Maintainance of this activity in saline conditions in roots, may have an importance in seedlings tolerance .

Full-Text [PDF 231 kb]   (1224 Downloads)