Abstract: The peroxidase, estrase and glutamic-oxalacetic transaminase isozymes (POD. EST and GOT) in leaves of twenty-eight species belonging to 5 genera were analysed by means of polyacrylamide gel electrophoresis. The results show as follows: The zymograms of glutamic oxaiacetic transaminase isozyme are generally stable and therefore useful in distinguishing genera. The POD and EST isozymes vary among species and may be used as reference basis for distinguishing species. Based on the zymograms of three enzymes and similarty coefficients analysis, combined with classic systematic data authors suggest thatisoenzymatic data be valuable in solving some systematic problems of caespitose bamboos.

Key words: Caespitose bamboos, Isozyme, Similar coefficient