Genetic diversity of exotic white maize genotypes through principal component and cluster analysis for yield-related traits

Authors

  • Goutom Roy Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh
  • Bodrun Nessa Shompa Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh
  • Irin Akter Emu Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh
  • Niloy Gain Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh
  • Jamilur Rahman Department of Genetics and Plant Breeding, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh

Keywords:

White maize, Genetic diversity, D2 statistics, Cluster analysis, Principal component analysis

Abstract

Genetic variation is a fundamental requirement in crop improvement programs. The study evaluated 17 white maize genotypes to analyze genetic diversity across 13 yield-related parameters at the farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. Substantial genetic variation was observed among the traits of interest, and the first three principal components had eigenvalues greater than 1, accounting for 87.64% of the total variation.  The cluster phylogeny classified the genotypes into five clusters, with genotypes between clusters I and V, followed by clusters I and II, showing the highest inter-cluster distance, indicating that genotypes in these clusters were more diverse than others. Comparatively, genotypes in cluster V showed short plant height, whereas clusters I and II showed the highest yield-contributing performance. Collectively, genotype CLTHW15008 from cluster I and genotypes CLTHW15004, CLTHW15005, CLTHW15006, CLTHW15011, CLTHW15001, and CLTHW15015 from cluster II could be selected as potential parents to develop vigorous maize hybrids.

Bangladesh J. Bot. 55(3): 539-545, 2026 (September)

Abstract
54
PDF
28

Downloads

Published

2026-09-30

Issue

Vol. 55 No. 3 (2026)

Section

Articles

License

© Bangladesh Botanical Society

Authors are required to transfer the copyright of their articles to the journal. The Declaration form is available here http://www.bdbotsociety.org/journal/journal_pdf/declaration_form.pdf

How to Cite

Roy, G. ., Shompa, B. N. ., Emu, I. A. ., Gain, N. ., & Rahman, J. . (2026). Genetic diversity of exotic white maize genotypes through principal component and cluster analysis for yield-related traits. Bangladesh Journal of Botany, 55(3), 539-545. https://doi.org/10.3329/bjb.v55i3.93863