gel electrophoresis method,was used to study the genetic diversity of Fagus engleriana and F.pashanica at Nanjiang Country,Sichuan Province.Ten allozymes were identified and they are:Peroxydase(PX 1 and PX 2),Phosphogluconate dehydrogennase(PGD),Acide phosphatase(ACP),Superoxyde dismutase(SOD),Glutamate oxaloacetate transaminase(GOT 1 and GOT 2),Isocitrate dehydrogenase(IDH),Phosphate glucose isomerase(PGI),Menadione reductase(MNR),Phosphoglucomutase(PGM 1 and PGM 2),and Malate dehydrogenase...