Classification of Some Tamarind Varieties by Using Peroxidase Isozymes

Abstract

The peroxidase isozymes (PER) were studies in eighty-one varieties of Tamarindus indica Linn. by using vertical polyacrylamide gel electrophoresis. The typical zymograms of PER of the sour and the sweet tamarinds showed three different coloration of bands : the light brown bands, the light grey bands and the dark brown bands. The dark brown bands was a key band that can be used to classify the tamarind varieties. The PER isozyme patterns of the sour and the sweet tamarinds were shown to be genotypically different. The genotypes of tamarind plants were closely related if the plants were collected from the same habitat. The environment had and effect on the position of light brown bands and light grey bands but not on the dark brown bands.