Skip to main content

The Use of matK in Ophioglossaceae Phylogeny and the Determination of Mankyua Chromosome Number Shed Light on Chromosome Number Evolution in Ophioglossaceae

Buy Article:

$23.00 plus tax (Refund Policy)

Abstract:

Abstract—

The chromosome number and phylogenetic position of the monotypic eusporangiate genus Mankyua (Ophioglossaceae), which shares peculiar morphological characteristics with Ophioglossum s.l. and Helminthostachys, were determined. Meiotic and mitotic chromosome observations of Mankyua show n = 130 and 2n = ca. 260, suggesting that the base number of this genus is x = 130, which is a new finding and the highest base number reported so far for Ophioglossaceae. The molecular phylogenetic trees derived from nucleotide sequence variation of rbcL and matK genes differ in terms of the phylogenetic position of Mankyua. The molecular phylogenetic trees based on combined data sets of rbcL and matK suggest that Mankyua might be the earliest-diverging lineage of Ophioglossaceae.

Keywords: Botrychium; Helminthostachys; Mankyua chejuense; Ophioglossum; morphological evolution; rbcL

Document Type: Research Article

DOI: https://doi.org/10.1600/036364413X670232

Publication date: 2013-09-12

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more