Numerical taxonomy of the genus <i>Senna</i> Mill. from Bangladesh

Authors

  • M. Oliur Rahman Department of Botany, University of Dhaka, Dhaka 1000
  • Md. Zahidur Rahman Department of Botany, University of Dhaka, Dhaka 1000
  • Ayesa Begum Department of Botany, University of Dhaka, Dhaka 1000

DOI:

https://doi.org/10.3329/bjpt.v20i1.15467

Keywords:

Senna, Cluster analysis, Phenetic relationship, UPGMA

Abstract

This study examines the patterns of morphological variation and phenetic relationships among 11 species of Senna Mill. from Bangladesh using 32 vegetative and floral characters. The highest similarity is found between S. obtusifolia and S. tora, while the highest variation is observed between S. alata and S. hirsuta. UPGMA tree derived from cluster analysis reveals three major clusters, the first of which consists of two species (S. alata and S. auriculata), the second cluster comprises four species (S. hirsuta, S. obtusifolia, S. tora and S. occidentalis) and the third one is composed of five species (S. multiglandulosa, S. sophera, S. siamea, S. timoriensis and S. surattensis). A close relationship is also found between S. multiglandulosa and S. sophera, and between S. siamea and S. timoriensis. Results obtained from the present study are found congruent with cytological and anatomical studies showing the significance of numerical analysis for taxonomic relationship in the genus Senna.

DOI: http://dx.doi.org/10.3329/bjpt.v20i1.15467

Bangladesh J. Plant Taxon. 20(1): 77-83, 2013 (June)

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Published

2013-06-25

How to Cite

Rahman, M. O., Rahman, M. Z., & Begum, A. (2013). Numerical taxonomy of the genus <i>Senna</i> Mill. from Bangladesh. Bangladesh Journal of Plant Taxonomy, 20(1), 77–83. https://doi.org/10.3329/bjpt.v20i1.15467

Issue

Vol. 20 No. 1 (2013)

Section

Articles

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