Vol. 11, Issue 6 (2022)

Author(s):
Debnath Abhijit and Deb Prahlad

Abstract:
In the present investigation, the genetic diversity, existing among the seedling germpalsm of jackfruit (Artocarpus heterophyllus Lam.) of northern Tripura state was observed with special reference to clustering patterns of the genotypes. The study was conducted during 2019-21. Both Mahalanobis’ D² analysis (Tocher’s method) and Euclidean analysis (Ward’s minimum variance method) grouped the 50 jackfruit genotypes into eight clusters. However, the clusters show variations in different methods with respect to number of genotypes and the actual accessions included in each cluster. In Mahalanobis’ D² analysis the maximum Inter-cluster distance was observed between Cluster VI and Cluster VIII (i.e. 62655.811). Whereas, Ward’s method revealed the highest Inter-cluster value between cluster I and Cluster II (i.e. 1732.753). From both of these clustering techniques, it is evident that genotypes JF-1, JF-12, JF-21, JF-30 and JF-35 are either located in the same cluster or in adjacent clusters, while accessions JF-4 and JF-9 were placed in the same cluster together in both the cases.