Results 1 to 10 of about 3,609 (241)
Separated Sexes, Shared Consequences: Disentangling Predictors of Genetic Diversity in Dioecious Angiosperms [PDF]
Ecology and EvolutionSexual systems such as dioecy, although rare in angiosperms, seem to enhance intrapopulation genetic diversity due to obligate outcrossing. Empirical studies had strengthened theoretical predictions that genetic diversity in dioecious angiosperms is ...
Thais Martins Teixeira +1 more
doaj +3 more sources
Retrotransposon Proliferation Coincident with the Evolution of Dioecy in Asparagus
G3: 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 +5 more sources
Phylogenetic Analysis of Dioecy in Monocotyledons [PDF]
American 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 D Weiblen
exaly +4 more sources
Whole-genome sequencing reveals a possible molecular basis of sex determination in the dioecious wild yam Dioscorea tokoro. [PDF]
PLoS GeneticsDioecious plants, which have distinct male and female individuals, constitute ~5% of angiosperm species and have emerged frequently and independently from hermaphroditic ancestors.
Aoi Kudoh +17 more
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Prickly Problems: Cylindropuntia's Low Genetic Diversity Despite Inbreeding Avoidance [PDF]
Ecology and EvolutionDioecy, the separation of sexes, is found in 6% of flowering plants. One widely known hypothesis suggests that it is an adaptation to mitigate inbreeding. A contrary hypothesis suggests that dioecy is an evolutionary dead end.
Niveditha Ramadoss +2 more
doaj +2 more sources
THE ROLE OF DIVERSIFICATION IN CAUSING THE CORRELATES OF DIOECY [PDF]
Evolution; International Journal of Organic Evolution, 2004 Dioecy is reported to be correlated with a number of ecological traits, including tropical distribution, woody growth form, plain flowers, and fleshy fruits. Previous analyses have concentrated on determining whether dioecy is more likely to evolve in lineages possessing these traits, rather than considering the speciation and extinction rates of ...
Jana C Vámosi, Steven M Vámosi
exaly +3 more sources
NUCLEO-CYTOPLASMIC MALE STERILITY AND ALTERNATIVE ROUTES TO DIOECY [PDF]
Evolution; International Journal of Organic Evolution, 1994 Population-genetic models of nucleo-cytoplasmic gynodioecy are shown to allow invasion of males and conversion to dioecy in a single cytotype. Pleiotropic effects of restorer alleles on fertility through male or female function can maintain a cytoplasmic polymorphism in a population that prevents evolution to dioecy regardless of the pollen fertility ...
Stewart T Schultz
exaly +4 more sources
Frontiers 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
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Rodriguésia, 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
Frontiers 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
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