Results 41 to 50 of about 1,446 (175)
Evolution of plant sex and molecular mechanisms underlying plants sex separation
Forestry Research, 2023 Unlike animals, plants exhibit more complexity of sexual morphs. The genetic mechanism underlying plant sex is a hot research topic in plant biology. In recent decades, advanced theories have been put forth on plant sex determination, but experimental ...
Wei Li +4 more
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Sex Allocation: Evolution to and from Dioecy [PDF]
Current Biology, 2009 Sex allocation in hermaphrodites should evolve in response to changes in the frequency of unisexuals. As predicted, it has now been demonstrated that hermaphrodites respond to the removal of males from experimental plant populations by increasing their allocation to male function.
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Role of Pollinators in the Evolution of Dioecy from Distyly [PDF]
Evolution, 1980 Distylous flowering plant species are characterized by having two types of individuals that bear different forms of flowers: "pin" flowers with long styles and short stamens and "thrum" flowers with short styles and long stamens (Darwin, 1877; Frankel and Galun, 1977).
Beach, J. H., Bawa, K. S.
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Frontiers in Plant Science, 2019 Dioecy, the specialization of individuals into either male-only or female-only sexual function, has multiple evolutionary origins in plants. One proposed ancestral mating system is heterodichogamy, two morphs of cross-fertilizing hermaphrodite flowers ...
Eric Wajnberg +8 more
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Sex expression in Serbian dendroflora: A case study of Fraxinus ornus var. angustifolia [PDF]
Archives of Biological Sciences, 2012 Out of a total number of tree species in Serbian flora, 28% are hermaphrodites, 43% are monoecious and 29% are dioecious. The dendroflora appears to have a larger proportion of unisexual than hermaphrodite species.
Popović Zorica +6 more
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Thermogenesis‐derived spatiotemporal microclimates guide pollinator movement to ensure pollination
Journal of Integrative Plant Biology, EarlyView.Alocasia odora's microclimatic heterogeneity guides Colocasiomyia fly movement within its inflorescence. During the female stage, midday heat in the upper spadix pushes flies down to the cooler female zone. During the male stage, nocturnal warmth in the upper part pulls flies upward and spathe constriction closes the lower female chamber.
Yuanjun Yu +5 more
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Zoologica Scripta, EarlyView.ABSTRACT Islands harbour unique biodiversity, and depending on their geological origin, they have fundamentally different colonisation histories: continental islands may contain relict faunas shaped by vicariance and sporadic gene flow, whereas oceanic islands must have been colonised across open seas, often through long‐distance dispersal events ...
Jonathan P. Miller +3 more
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Environmental DNA, 2022 Flowers play a central role in plant reproduction by dispersing and receiving pollen grains delivered by animal vectors or air. They are rich in various nutrients, and therefore, provide an ideal habitat for many microbes.
Maxime Marre +2 more
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The Plant Journal, Volume 127, Issue 4, August 2026.SUMMARY Dioscorea alata L., the most widely cultivated yam species, exhibits dioecy (XY system) and a strong male‐biased sex ratio. These two major constraints limit parental combinations and hinder breeding progress. To get insight into the sex chromosome structure and evolution in D.
Komivi Dossa +20 more
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Generalist passerine birds perform a functional role as pollinators in temperate Europe
Journal of Ecology, Volume 114, Issue 7, July 2026.Nectar‐feeding birds are effective pollinators. In temperate Europe, songbirds visit flowers but lack specialist traits, so functional pollination has been discounted. We use observations, pollen identification and experiments to demonstrate that generalist birds affect fruit‐set of flowering trees.
Sandra H. Anderson +2 more
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