Genetic divergence in mango.
Singh J., Singh R. R., Yadav G. S.
Author Affiliation: Department of Fruit and Fruit Technology, Bihar Agricultural College, Sabour, Bihar - 813 210, India.
Journal of Applied Biology 14 : 36-38
Abstract : An experiment was to assess the genetic divergence among 43 genotypes of mango, collected from different research centres of India, using Mahalanobis D2 statistics. Data were recorded for fruit yield per plant, cumulative yield per plant, fruit weight, total soluble solids (TSS) and acidity. Analysis of variance revealed highly significant differences among genotypes for all characters. The genotypes were grouped into 7 clusters. Cluster VI, which consists of the genotypes Kala Pahar and Amrapali, had the highest TSS (21.45%) and lowest acidity (0.22%) with a desirable fruit weight (206.50 g). Cluster IV, comprising the genotypes Dudhia Maldah, Banglora, Maldah Surajgarha and Dholikothi Maldah, recorded the highest fruit yield per plant (84.78 kg), cumulative yield per plant (771.07 kg) and fruit weight (189 g), with desirable values for TSS (19.58%) and acidity (0.23%). No relationship between geographical origin and genetic diversity was established. Selecting genotypes from divergent clusters and utilizing them in a hybridization programme is likely to produce desirable segregants in subsequent generations that may lead to desirable improvement in mango for yield and quality traits.