Confirming the identity of newly recorded <i>Nymphaea rubra</i> Roxb. <i>ex</i> Andrews discerning from <i>Nymphaea pubescens</i> Willd. using morphometrics and molecular sequence analyses

  • D.P.G. Shashika K. Guruge Postgraduate Institute of Science, University of Peradeniya
  • Deepthi Yakandawala Department of Botany, Faculty of Science, University of Peradeniya
  • Kapila Yakandawala Department of Horticulture & Landscape Gardening, Faculty of Agriculture & Plantation Management, Wayamba University of Sri Lanka
Keywords: matK, Morphometric Analysis, Nymphaeaceae, psbA-trnH, Water-lilies, Sri Lanka.

Abstract

A multivariate statistical analysis was carried out to evaluate the morphological variation between Nymphaea pubescens Willd., and a deep purplish red flowered Nymphaea that occur in Sri Lanka. The plant resembles N. rubra Roxb. ex Andrews, a species that had been sometimes circumscribed as a variety under N. pubescens Willd. DNA sequences data of matK and psbA-trnH regions were used to obtain further support. Morphological data were scored from collected samples and analyzed using PAST software. Extracted DNA were amplified for matK and psbA-trnH gene regions. Obtained sequences were matched with the related accessions deposited in the GenBank. Multivariate analysis supported the recognition of deep purplish red flowered Nymphaea as a different species from N. pubescens, and was identified as N. rubra based on literature. GenBank accessions for the matK region of N. rubra showed 99% similarity while it gave only a 96% similarity for N. pubescens with query coverage of 97% and 96% respectively, corroborating with the morphological analysis. Comparison of the sequence divergence between N. pubescens and N. rubra sequences indicated a 95% similarity for matK gene region while 92% similarity for psbA-trnH gene region. The sequences generated during the present study would provide additional reference sequences for the two taxa.

Bangladesh J. Plant Taxon. 23(2): 107-117, 2016 (December)

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Abstract
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Published
2016-12-28
How to Cite
Guruge, D., Yakandawala, D., & Yakandawala, K. (2016). Confirming the identity of newly recorded <i>Nymphaea rubra</i> Roxb. <i>ex</i> Andrews discerning from <i>Nymphaea pubescens</i&gt; Willd. using morphometrics and molecular sequence analyses. Bangladesh Journal of Plant Taxonomy, 23(2), 107-117. https://doi.org/10.3329/bjpt.v23i2.30819
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