he esterase isozyeme and protein electrophoresis patterns of spring shoot ripen leaves of six varieties/cultivars,two mutational cultivars and one hybrid in four citrus species was studied by polyacrylamide gel electrophoresis.The sibship was analysed according to the results of zymograms and bands.The data of esterase isozyme patterns showed that there were differences among species and almost no differences in same species.The leaf protein isozgme bands were clear and narrow and there were significant dif...