Results 21 to 30 of about 1,446 (175)
PLoS Genetics, 2020 Most angiosperms bear hermaphroditic flowers, but a few species have evolved outcrossing strategies, such as dioecy, the presence of separate male and female individuals. We previously investigated the mechanisms underlying dioecy in diploid persimmon (D.
Takashi Akagi +6 more
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Dioecy and the evolution of sex ratios in ants [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2009 Split sex ratios, when some colonies produce only male and others only female reproductives, is a common feature of social insects, especially ants. The most widely accepted explanation for split sex ratios was proposed by Boomsma and Grafen, and is driven by conflicts of interest among colonies that vary in relatedness.
Diane C, Wiernasz, Blaine J, Cole
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Pollen and anther development malfunction in distylous flowers of Palicourea padifolia (Rubiaceae)
Botanical Sciences, 2020 Background: Heterostyly is a genetic polymorphism in which flowers differ between individual plants of a species in heights at which stamens and style are reciprocally positioned.
Juan Francisco Ornelas +2 more
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European Journal of Taxonomy, 2023 We present a preliminary discussion about cauliflory, sexual dimorphism and biogeographic patterns in Drypetes Vahl (Putranjivaceae Endl.), focused on Africa.
Alejandro Quintanar +3 more
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Frontiers in Plant Science, 2022 Reproductive growth is a bioenergetic process with high energy consumption. Pollination induces female flower longevity in spinach by accelerating sepal retention and development. Cellular bioenergetics involved in cellular growth is at the foundation of
Xiaokai Ma +7 more
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EVOLUTION OF DIOECY FROM GYNODIOECY [PDF]
Evolution, 1970 sions do not bear directly on the truth or falsity of my hypothesis concerning the relationship between conservatism and variation. Long's citation of Bader's conclusions as a criticism of my weighting procedure appears to depend tacitly on an assumption fairly widely made by biologists: that the coefficient of variation is the only meaningful way to ...
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Gynodioecy to dioecy: are we there yet? [PDF]
Annals of Botany, 2011 The 'gynodioecy-dioecy pathway' is considered to be one of the most important evolutionary routes from hermaphroditism to separate sexes (dioecy). Despite a large accumulation of evidence for female seed fertility advantages in gynodioecious species (females and hermaphrodites coexist) in support of the first step in the gynodioecy-dioecy pathway, we ...
Rachel B, Spigler, Tia-Lynn, Ashman
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High incidence and correlates of dioecy in the flora of the Canadian Arctic Archipelago
Arctic Science, 2017 In comparing the incidence of dioecy in North American floras, we report a strong, positive correlation with increasing latitude. Dioecy in the High Arctic is highly correlated with woodiness, as elsewhere.
Peter G. Kevan, Becky Godglick
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Translocation heterozygosity in southern African species of Viscum
Bothalia: African Biodiversity & Conservation, 1980 Sex-associated and floating translocation complexes are characteristic of dioecious species of Viscum, but are virtually absent in monoecious species.
D. Wiens, B. A. Barlow
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Plants, 2022 Androdioecy is a rare reproductive system. Fraxinus platypoda, a woody canopy species in Japan’s mountainous riparian zones, is described as a morphologically androdioecious species. In this study, we tried to detect whether F.
Hitoshi Sakio, Takashi Nirei
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