Effect of osmotic stress and salinity on germination and mucilage expansion of seeds of <scp><i>Plantago albicans</i></scp> L. (Plantaginaceae): Inter‐population variation

Abstract Plantago albicans L. (Plantaginaceae) grows in wastelands, slopes, and stony pastures, with dry sun‐exposed soils. Its seeds produce a mucilaginous coat. The main aim of this study was to evaluate intraspecific variation osmotic salinity stress response mucilage production P. seeds. relationships between stress, germination characteristics, expansion were studied eight populations . Seeds germinated distilled water, 20% (w/v) polyethylene glycol 6000 (PEG), or 100 mM NaCl solutions. In most populations, PEG reduced final germination. Also, slowed more significantly under than salinity, while affected by salinity. Therefore, there an inverse correlation stress. Seed similar climatic parameters showed different response; however, found some parameters. from drier habitats faster water produced control humid areas.