Taxonomic relationships among the genera of subfamily Cucurbitoideae (family Cucurbitaceae) from India inferred from ITS sequences of nuclear ribosomal DNA

M. Ajmal Ali, Arun K. Pandey, Joongku Lee

Research output: Contribution to journalJournal articlepeer-review

5 Scopus citations

Abstract

The internal transcribed spacer (ITS) region of nuclear ribosomal DNA was analyzed from 18 species of the subfamily Cucurbitoideae (family Cucurbitaceae) to assess phylogenetic relationships. The ITS sequence data resolves three major clades. Benincasa, Coccinia, Cucumis, Diplocyclos, Lagenaria and Solena, which belong to the tribe Benincaseae, are grouped in a single clade (78% bootstrap support). This group is further distinguishable into two subgroups. Benincasa forms a clade (80% bootstrap support) with Cucumis species. Lagenaria is closely related to Diplocyclos-Coccinia-Solena subgroup (78% bootstrap support). Trichosanthes and Luffa are grouped in a single clade (93% bootstrap support). Edgaria darjeelingensis (tribe Herpetospermeae), though nested within Trichosanthes-Luffa clade (50% bootstrap support), is distinct from members of tribes Benincaseae and Joliffeae included in the present study. Momordica cymbalaria (=Luffa tuberosa) forms a clade with Momordica dioica (80% bootstrap support).

Original languageEnglish
Pages (from-to)127-140
Number of pages14
JournalPhytomorphology: An International Journal of Plant Morphology
Volume59
Issue number3-4
StatePublished - Jul 2009
Externally publishedYes

Keywords

  • Cucurbitaceae
  • Cucurbitoideae
  • ITS
  • Nrdna
  • Phylogenetic relationships

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