The effect of polyploidy and hybridization on the evolution of floral colour in Nicotiana (Solanaceae).

ABSTRACT:

Background and aims

Speciation in angiosperms can be accompanied by changes in floral colour that may influence pollinator preference and reproductive isolation. This study investigates whether changes in floral colour can accompany polyploid and homoploid hybridization, important processes in angiosperm evolution.

Methods

Spectral reflectance of corolla tissue was examined for 60 Nicotiana (Solanaceae) accessions (41 taxa) based on spectral shape (corresponding to pigmentation) as well as bee and hummingbird colour perception in order to assess patterns of floral colour evolution. Polyploid and homoploid hybrid spectra were compared with those of their progenitors to evaluate whether hybridization has resulted in floral colour shifts.

Key results

Floral colour catego

SUBMITTER: McCarthy EW 

PROVIDER: S-EPMC4598364 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature