The contents of ALA,GLU and ASP in blades and roots of Puccinellia tenuiflora mature plants werehigher,among those forementioned,ALA was the major factor component in transporting and storingnitrides in P.tenuiflora.With the increases in salt contents in soil.total free amino acid Contents in theblades were increasing,and among them,PRO increased most rapidly and the degree of increasingamplitude of PRO contents were also higher by the same time,ranging from 19%to 53%of total freeamino acids,however,the oth...