The seed germination experiments and water culture were conducted to study the effects of p hydroxybenzoic acid and salicylic acid on the cucumber seed germination and the enzyme activities in its seedling under salt stress.The results indicated that p hydroxybenzoic acid and salicylic acid could increase the germination percentage,germination index,vigor index and the activities of PPOD in cucumber embryo root and embryo bud.The effect of p hydroxybenzoic acid on seed germination was better than that of...