Patterns of hybridization and cryptic introgression among one- and four-needled pinyon pines.

ABSTRACT:

Background and aims

Pinyon pine hybridization is widely acknowledged, but the frequency of and contributors to such interspecific mating remain largely unstudied. Pinus quadrifolia has three to four needles per fascicle, suggesting that it is a result of hybridization between the five-needled P. juarezensis and the single-needled P. monophylla. In this study we address the taxonomic validity of P. juarezensis, the hybrid origin of P. quadrifolia and the presence of hybridization and intermediate morphology as a result of interspecific hybridization in this complex.

Methods

We address these questions by combining a genomic and morphological approach. We generated 1868 single nucleotide polymorphisms (SNPs) to detect genetic clusters using principal co-ordinates analyis, discr

SUBMITTER: Buck R 

PROVIDER: S-EPMC7424738 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature