MO Rahman¹*, MG Rabbani¹, R Yesmin², EJ Garvey³

¹Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202,  Bangladesh
²Department of Agricultural Extension, Khamarbari, Dhaka-1215, Bangladesh
³USDA/ARS/NGRL, Beltsville, MD-20705, USA

ABSTRACT

Through genetic diversity based on multivariate analysis, hundred brinjal accessions were grouped into eight clusters.  The cluster I contained the highest number of accessions (22) followed by the cluster V (19), III (17), IV (17), VII (10), VIII (7), II (6) and VI (2). The clustering pattern revealed that the accessions collected from the same region did not fall in a same cluster, indicating that there was no relationship between genetic divergence and geographical distribution of the accessions. The results of the PCA revealed that the first four of the principal component axes accounted for 78.07% of the variation among the genotypes considering ten characters. The maximum inter-cluster divergence was found between the cluster II and VI (32.234) and was minimum between V and VII (2.841). The maximum intra-cluster divergence was found between accessions falling in the cluster II. On the basis of the mean performance of different clusters, accessions having acceptable yield were placed in cluster IV, VI and VIII. The superior accessions may be selected from both maximum and minimum divergent clusters for further improvement.

Key words: genetic diversity, multivariate analysis, brinjal, accessions and cluster

*Corresponding author. Tel.: + 8801712932860
E-mail address: obaidbau@yahoo.com (MO Rahman)                                                                                                     Full Text (PDF)