Abstract:
An experiment was carried out at the department of Horticulture, Bangladesh Agricultural University,
Mymensingh to investigate genetic diversity of 73 lemon genotypes using three isozymes viz, glutamate
oxaloacetate transminase (GOT), malate dehydrogenase (MDH) and peroxidase (PER) isozymes during
2006-2007. All the isozymes, used in the present study showed polymorphism for lemon. A total of 25
different electrophoretic zymotypes were observed for three isozymes studied. Eight zymotypes with
GOT, 10 with MDH and 7 with PER were formed by 22, 39, 12 bands at different Rf values.
respectively. A dandogram was constructed and 73 lemon genotypes were grouped into nine clusters, the
genotypes collected from same location were grouped in different clusters, indicating existance of
variability within single location. The result revealed that isozymes are useful genetic marker for
variability analysis of lemon and other species of Citrus.
