Results 1 to 10 of about 1,446 (175)

Phylogenetic Analysis of Dioecy in Monocotyledons [PDF]

open access: yesAmerican Naturalist, 2000
Surveys of plant breeding systems in angiosperm families have shown a significant association between monoecy and dioecy, and researchers have proposed that dioecy has tended to evolve from monoecy. We evaluated this hypothesis in the context of a phylogeny of 918 monocotyledons assembled from 19 published trees.
George Weiblen
exaly   +4 more sources

Retrotransposon Proliferation Coincident with the Evolution of Dioecy in Asparagus

open access: yesG3: Genes, Genomes, Genetics, 2016
Current phylogenetic sampling reveals that dioecy and an XY sex chromosome pair evolved once, or possibly twice, in the genus Asparagus. Although there appear to be some lineage-specific polyploidization events, the base chromosome number of 2n = 2× = 20
Alex Harkess   +8 more
doaj   +4 more sources

A convergent mechanism of sex determination in dioecious plants: Distinct sex-determining genes display converged regulation on floral B-class genes

open access: yesFrontiers in Plant Science, 2022
Sex determination in dioecious plants has been broadly and progressively studied with the blooming of genome sequencing and editing techniques. This provides us with a great opportunity to explore the evolution and genetic mechanisms underlining the sex ...
Xianzhi Zhang   +4 more
doaj   +1 more source

Two dioecious Simarouba species with a specialized pollination system and low reproductive efficacy in Central Brazil

open access: yesRodriguésia, 2022
Several possible correlations between dioecy and eco-morphological features have been suggested to infer the conditions that would favor this sexual system. Dioecy has been associated either with specialized or generalized pollination systems.
Indiara Nunes Mesquita Ferreira   +6 more
doaj   +1 more source

The Diversity and Dynamics of Sex Determination in Dioecious Plants

open access: yesFrontiers in Plant Science, 2021
The diversity of inflorescences among flowering plants is captivating. Such charm is not only due to the variety of sizes, shapes, colors, and flowers displayed, but also to the range of reproductive systems. For instance, hermaphrodites occur abundantly
Ana Paula Leite Montalvão   +3 more
doaj   +1 more source

Functional Dioecy and Andromonoecy in Solanum [PDF]

open access: yesEvolution, 1989
Field and laboratory studies of 19 diclinous species endemic to Australia help to clarify the nature and evolution of andromonoecy, androdioecy, and dioecy in the genus Solanum. Ten species are andromonoecious; typically these species bear inflorescences with a single, large basal hermaphroditic flower and 12-60 distal, smaller staminate flowers.
Gregory J, Anderson, David E, Symon
openaire   +2 more sources

Mediation of a Mutualistic Conflict for Pollination via Fig Phenology and Odor Recognition between Ficus and Fig Wasp

open access: yesPlants, 2022
The vegetative and reproductive growth of plants provide the basic tempo for an ecosystem, and when species are interdependent, phenology becomes crucial to regulating the quantity and quality of the interactions. In plant–insect interactions, the plants
Wen-Hsuan Chen   +4 more
doaj   +1 more source

A Multidisciplinary Study of Wild Grapevines in the River Crati Natural Reserve, South Italy (Calabria): Implications in Conservation Biology and Palaeoecological Reconstructions

open access: yesQuaternary, 2023
Nowadays, wild grapevine populations are quite limited and sporadic mainly due to habitat destruction, land-use change, and the spread of pathogens that have reduced their distribution range.
Eleonora Clò   +9 more
doaj   +1 more source

The rapid dissolution of dioecy by experimental evolution [PDF]

open access: yesCurrent Biology, 2021
Evolutionary transitions from hermaphroditism to dioecy have been common in flowering plants,1,2 but recent analysis also points to frequent reversions from dioecy to hermaphroditism.2-4 Here, we use experimental evolution to expose a mechanism for such reversions, validating an explanation for the scattered phylogenetic distribution of dioecy.
Guillaume G. Cossard   +4 more
openaire   +2 more sources

A Foundational Population Genetics Investigation of the Sexual Systems of Solanum (Solanaceae) in the Australian Monsoon Tropics Suggests Dioecious Taxa May Benefit from Increased Genetic Admixture via Obligate Outcrossing

open access: yesPlants, 2023
Solanum section Leptostemonum is an ideal lineage to test the theoretical framework regarding proposed evolutionary benefits of outcrossing sexual systems in comparison to cosexuality.
Jason T. Cantley   +5 more
doaj   +1 more source

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