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Issue: Vol. 660 No. 1: 16 Jul. 2024
Type: Article
Published: 2024-07-16
DOI: 10.11646/phytotaxa.660.1.3
Page range: 35-45
Abstract views: 63
PDF downloaded: 0

Systematic position of Rivina humilis var. humilis, R. humilis var. bracteata and R. bengalensis based on nrDNA ITS and cpDNA rbcL & trnH-psbA sequence data

Basirhat College, Basirhat, North 24 Parganas – 743412, West Bengal, India, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar-143005, Punjab, India
Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata-700019, West Bengal, India
Department of Botany, University of Delhi, Delhi-110007, India, Mansarovar Global University, Bilkisganj, Sehore- 466110, Madhya Pradesh, India
Rivina Phytolaccaceae ITS rbcL trnH-psbA molecular systematics Eudicots

Abstract

The ITS and cpDNA sequences were obtained for three taxa of the family Phytolaccaceae, viz. Rivina bengalensis S.C.Srivast. & T.K.Paul, R. humilis L. var. humilis, and R. humilis var. bracteata D.Maity, Sonia Mitra, Manasi Mandal & Maiti. The MLtree strongly supports the Rivina humilis clade, which includes R. bengalensis and R. humilis var. bracteata. The synonymization of R. bengalensis is supported by both molecular and morphological data. The accessions of Rivina humilis var. bracteata group together in the R. humilis clade, but the results also show inter-population variation, which primarily supports the varietal status of the taxon. The broadly oblanceolate bracts which is abruptly narrowed from middle or above middle into a long subulate to narrowly triangular, acuminate apical lobe make the variety distinct from typical R. humilis. The combined rbcL and trnH-psbA dataset reveal congruent result for the sequenced Rivina spp. Present study is the first report on molecular systematics of R. humilis from India.

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