Effect of iso-osmotic levels of salts and PEG-6000 on saccharides, free proline and nitrogen content during early seedling growth of pea (Pisum sativumL.)

摘要

Effects of iso-osmotic levels of salts (NaCl, CaCl2, Na2So2) and PEG-6000 on saccharides, free proline and nitrogen contents were studied in cotyledons of pea. Saccharide (total, reducing andnon-reducing) and nitrogen contents decreased with increasing the salt and water stress as compared to control at all the stages of seedling growth. PEG-induced stress had more deleterious effect on total saccharide content and non-reducing saccharide (NRS) content, while salt stress was more harmful to reducing saccharide (RS) and nitrogen content. Free proline content of cotyledons increased with increasing the salt and especially PEG-induced stress at all the stages of seedling growth.