Differences among female, male and hermaphrodite papaya were studied through isozyme, SDS-PAGE of protein and RAPD of genomic DNA. The possibility to apply these methods in the sex identification of papaya was also discussed. The main results were as follows:
1. Female, male and hermaphrodite plants were different in zymograms of peroxidase isozyme, esterase isozyme and polyphenol oxidase isozyme. Generally, the enzyme activities of female plants were higher than those of both male and hermaphro...
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