The polyethylene glycol(PEG) was used to simulate drought to study the germination and seedling growth of flax.The results showed that seedling was more sensitive to PEG treatment than germination.5% PEG promoted sprouting,and 15% PEG were appropriate for simulating drought.Under 15%(w/v)PEG treatment,seed vigor was reduced,mean germination index(GI),vigor index(VI),hypocotyl elongation and fresh weight of seedling were repressed significantly,but no consistency was found on the primary root growth;Signific...