Cryptic species diversity in a widespread neotropical tree genus: The case of Cedrela odorata.

ABSTRACT:

Premise

Reconciling the use of taxonomy to partition morphological variation and describe genetic divergence within and among closely related species is a persistent challenge in phylogenetics. We reconstructed phylogenetic relationships among Cedrela odorata (Meliaceae) and five closely allied species to test the genetic basis for the current model of species delimitation in this economically valuable and threatened genus.

Methods

We prepared a nuclear species tree with the program SNPhylo and 16,000 single-nucleotide polymorphisms from 168 Cedrela specimens. Based on clades present and ancestral patterns ADMIXTURE, we designed nine species delimitation models and compared each model to current taxonomy with Bayes factor delimitation. Timing of major lineage divergences was

SUBMITTER: Finch KN 

PROVIDER: S-EPMC9827871 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature