Results 91 to 100 of about 3,902 (197)

The evolution and maintenance of monoecy and dioecy in Sagittaria latifolia (Alismataceae) [PDF]

open access: yes, 2003
The evolution of separate sexes (dioecy) from combined sexes (hermaphroditism) is a central problem in evolutionary biology. Determining the conditions under which unisexual individuals replace individuals with two sexual pathways to reproductive fitness
Dorken, Marcel Eric
core  

Evolutionary consequences of dioecy in angiosperms : the effects of breeding system on speciation and extinction rates

open access: yes, 2001
Dioecy, the breeding system with male and female function on separate individuals, may affect the ability of a lineage to avoid extinction or speciate.
Heilbuth, Jana C.
core   +1 more source

The Red Queen unveils the sexual and mating strategies of flowers

open access: yesJournal of Ecology, Volume 114, Issue 5, May 2026.
Although the conventional wisdom is that floral traits of plants evolved in concert with their mutualistic pollinators, here we showed that several key sexual and mating traits of plants, which modulate their outcrossing strategy, evolved in response to the pressure exerted by their antagonistic insect herbivores.
Carlos Roberto Fonseca   +2 more
wiley   +1 more source

Low siring success of females with an acquired male function illustrates the legacy of sexual dimorphism in constraining the breakdown of dioecy

open access: yesEcology Letters, 2019
Dioecy has often broken down in flowering plants, yielding functional hermaphroditism. We reasoned that evolutionary transitions from dioecy to functional hermaphroditism must overcome an inertia of sexual dimorphism, because modified males or females ...
L. Santos-Del-Blanco   +2 more
semanticscholar   +1 more source

Evolution of crop phenotypic spaces through domestication

open access: yesNew Phytologist, Volume 250, Issue 3, Page 1948-1963, May 2026.
Summary We used domestication as an in vivo replicated experiment to investigate how divergent selection has shaped the evolution of multivariate phenotypic spaces. We measured 11–57 qualitative and quantitative traits in 13 species, either unique or shared between species, and established a framework for cross‐species comparisons. Our results revealed
Arthur Wojcik   +18 more
wiley   +1 more source

Rapid dissolution of dioecy by experimental evolution

open access: yesbioRxiv, 2019
Evolutionary transitions from hermaphroditism to dioecy have been frequent in flowering plants, but recent analysis indicates that reversions from dioecy to hermaphroditism have also been common.
G. Cossard   +4 more
semanticscholar   +1 more source

A Global Analysis of the Distribution Patterns of Style‐Length Polymorphisms Across Angiosperms

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
This study tested the tropicality‐ and diversity‐driven hypotheses to explain the global distribution of style‐length polymorphisms (SLP) in angiosperms. Phylogenetic logistic regression revealed that although SLP occurrence was associated with tropical regions, this pattern was driven by the predominantly tropical family Rubiaceae and disappeared once
Letícia Rodrigues Novaes   +3 more
wiley   +1 more source

Geographical distribution of dioecy and its ecological correlates based on fine‐scaled species distribution data from a subtropical island

open access: yesEcological research, 2019
Dioecy is a rather rare sexual expression system guarantees outcrossing to avoid the deleterious effects of inbreeding. The incidence of dioecy varied among local floras and suggested inclining to tropical and oceanic environments, but its eco-correlates
Huan-Yu Lin   +3 more
semanticscholar   +1 more source

A New Insight Into Pollen Release and Presentation in Actinidiaceae Plants: The Case Study of Dioecious Actinidia arguta

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
In this study, indoor and field observation methods were employed to conduct a tracking investigation on the anther dehiscence mode, pollen presentation strategy of male, and the floral characteristics and pollination traits of both female and male.
Kexin Sun   +7 more
wiley   +1 more source

Occurrence of Intersex in the Marine Mussel Perumytilus purpuratus (Mollusca: Bivalvia): Does Gonadal Parasitism Play a Role?

open access: yesBiology
Intersexuality is a reproductive phenomenon that occurs in some gonochoric species and refers to the simultaneous presence of both male and female gametes within the same individual.
Pablo A. Oyarzún   +5 more
doaj   +1 more source

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