INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016
open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15
Leucheria Lag. includes Polyachyrus Lag. (Asteraceae; Mutiseae; Nassauvieae)
Authors Name:
Mark Hershkovitz
Unique Id:
IJSDR2404088
Published In:
Volume 9 Issue 4, April-2024
Abstract:
Phylogenetic analysis of sequences from the nuclear ribosomal DNA internal transcribed spacer (ITS), plastome rpl32-trnL(UAA) intergenic spacer (rpl32-trnL), and plastome trnL(UAA) intron plus trnL(UAA)-trnF(GAA) intergenic spacer (trnL-trnF) demonstrates that the genus Polyachyrus Lag. is phylogenetically nested among species of Leucheria Lag. The data demonstrate that Leucheria and the monotypic Oxyphyllum Phil. share a unique common ancestor, but the present data cannot establish whether or not Oxyphyllum is sister to Leucheria. It appears as one of multiple unresolved lineages emerging from the Leucheria crown. The sister of this crown is a clade comprising Marticorenia Crisci and Moscharia Ruiz & Pav, with Spinoliva (Hook. & Arn.) G.Sancho, Luebert & Katinas being sister to all of these. The results demonstrate that secondary inflorescence heads of Polyachyrus and some Leucheria species are homologous rather than convergent, and that the ancestor of Leucheria occupied a warm, arid lowland rather than, as previously asserted, a cool, moist alpine/steppe habitat.
"Leucheria Lag. includes Polyachyrus Lag. (Asteraceae; Mutiseae; Nassauvieae)", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.9, Issue 4, page no.636 - 646, April-2024, Available :http://www.ijsdr.org/papers/IJSDR2404088.pdf
Downloads:
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Publication Details:
Published Paper ID: IJSDR2404088
Registration ID:210798
Published In: Volume 9 Issue 4, April-2024
DOI (Digital Object Identifier):
Page No: 636 - 646
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631
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