Assessment of peroxidase isozyme marker-based model for cross identifications in hybrids (F(1)) of urdbean [ Vigna mungo (L.) Hepper

Abstract

Four hybrids (4 F(1)s) were chosen out of crosses in the urdbean [ Vigna mungo (L.) Hepper, 2n = 22] having contrasting morphological characters. Zymograms for isozyme peroxidase were drawn from the patterns obtained from parents and their respective F(1) hybrids on the basis of relative similarities to parental bands. The selfed or crossed nature of hybrid pods was determined from the zymograms and their analysis. The number of bands and their intensities gave an idea about the extent of crossing in F(1) populations. Genetic identity (I) values were indicative of their selfed nature. Dendrograms were constructed on the basis of genetic identity values to display the relative similarities between the populations. Analysis was based on individual pods to confirm their hybrid or selfed nature. Possible use of this technique for identification of F(1) pods and elimination of selfed pods might be implemented to shorten the breeding operations during crossing.