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Cladistic analysis of chloroplast DNA restriction site characters in Andira (Leguminosae: Dalbergieae)
Author(s) -
Pennington R. Toby
Publication year - 1995
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1995.tb15674.x
Subject(s) - biology , chloroplast dna , introgression , cladistics , restriction site , clade , tribe , intraspecific competition , genus , restriction fragment length polymorphism , evolutionary biology , botany , coalescent theory , lineage (genetic) , phylogenetics , zoology , restriction enzyme , genetics , dna , polymerase chain reaction , gene , sociology , anthropology
Chloroplast DNA (cpDNA) restriction site variation was examined in 29 accessions, representing 29 populations of 17 species of Andira (Leguminosae, Papilionoideae, tribe Dalbergieae). This sample spans the morphological and geographical diversity of this poorly known, woody genus of approximately 30 species, which occurs throughout the neotropics, with one species in Africa. Cladistic analysis of 38 restriction site characters generated 182 equally most‐parsimonious trees. The strict consensus tree preserved four well‐supported clades, which are incongruent with previous infrageneric classifications of Andira. None of these clades has been recognized by previous workers, and three are not marked by any major morphological innovations. There were few restriction site differences between closely related species, but two (possibly three) species showed intraspecific cpDNA polymorphism, which probably reflects processes of hybridization with subsequent introgression, or lineage sorting.