By morphological types and geographical distributions,40 accessions have selected from the widely collected germplasm of Zoysia spp.to assess the cold tolerance of the species through electrolyte leakage ratio.Taking living temperature 50(LT50)as an estimation norm,the experiment result shows that all accessions,except Zoysia macrostaycha and Z.matrella that comes from the sandy seashores of Taiwan,tolerate lower temperature than Tiffton419 does,and the cold resistance of different species also va...