2 Works

Data from: Deconstructing heterostyly: the evolutionary role of incompatibility system, pollinators and floral architecture

Rocio Santos-Gally, Alejandro Gonzalez-Voyer & Juan Arroyo
Darwin’s early work on heterostyly and related style polymorphisms (the presence of two or three style morphs within a population) generated much interest to understand how precise interactions between ecological and genetic mechanisms influence the evolution of floral diversity. Here we tested three key hypotheses proposed to explain the evolution of heterostyly: i)the presence of self-incompatibility, ii) the role of pollinators in promoting dissasortative mating, and iii) floral architecture, which restricts pollinators’ movements and ensures...

Data from: Long-tongued insects promote disassortative pollen transfer in style-dimorphic Narcissus papyraceus (Amaryllidaceae)

Violeta I. Simón-Porcar, Rocío Santos-Gally & Juan Arroyo
1. In hermaphroditic flowers, reciprocal herkogamy e.g. heterostyly enhances pollen transfer between floral morphs (disassortative pollination) while avoiding self-interference between sexual organs. By contrast, disassortative pollination might be compromised in style-dimorphic flowers, which lack perfect reciprocity between the two floral morphs. This sub-optimal functioning has been considered to explain why stylar dimorphism is rare in nature. 2. Some style-polymorphic species receive a wide array of floral visitors, including long-tongued insects that feed on nectar and...

Registration Year

  • 2013
    2

Resource Types

  • Dataset
    2

Affiliations

  • University of Seville
    2