Floral characters and species diversification

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August undefined, 2024

WebWith ca. 2500 species, Myrteae is the largest tribe of Myrtaceae and one of the most diverse groups of flowering plants in the tropical Americas. In light of recent systematics adjustments, the present study is a review and provides new insights into floral diversity and evolution in Myrteae. General aspects of floral ontogeny and morphology for the fifty … WebJun 28, 2024 · When the habitat occupied by a specialist species is patchily distributed, limited gene flow between the fragmented populations may allow population differentiation and eventual speciation. ‘Sky islands’—montane habitats that form terrestrial islands—have been shown to promote diversification in many taxa through this mechanism. We …

Associations between floral specialization and species diversity: …

WebFlower differentiation is a plant process by which the shoot apical meristem changes its anatomy to generate a flower or inflorescence in lieu of other structures. Anatomical … WebApr 5, 2024 · The species in this subfamily exhibit a large diversity of floral morphology associated with repeated adaptations to different pollinators, such as hummingbirds, bees and bats [22–27] . Therefore, … dailymotion high cpu usage

Floral Characters and Species Diversification - DocsLib

WebApr 29, 2024 · Dioscorea is a pantropical monocotyledonous genus encompassing several well-known tuber crops and medicinal plants. It possesses remarkable morphological diversity, especially in reproductive characteristics, which are suggested to play important roles in species adaptation and diversification. Yet there have been few studies that … WebApr 11, 2024 · Cultivated chrysanthemum possesses greater morphological diversity than other Chrysanthemum species, especially with respect to flower shape and colour. In this study, we inferred that the time period extending back 6 Mya was an important period in the speciation of Chrysanthemum and the tachytelic evolution of cultivated chrysanthemums. WebAug 1, 2024 · The most recent common ancestor of all living angiosperms likely existed ∼ 140–250 million years ago 1, 2, 3. In contrast, the most recent common … dailymotion hidden life of the cell

Genetics of Floral Traits Inﬂuencing Reproductive Isolation …

Flower Diversity and Angiosperm Diversification SpringerLink

WebJan 21, 2015 · The low morphological disparity indicates an early partitioning of floral characters. Conclusions. The lineage diversification and the morphological disparity are consistent with traditional scenarios of insular radiation. ... This method tests for constant species diversification, or constant rate (CR), DD without extinction (DD − E), and DD ... WebAngiosperms exhibit a wide range of variability in floral attributes such as shape, size or color. Color is one of the most conspicuous floral characters, and since Darwin’s time, it … biology bugbears nutritionWebAug 2, 2024 · The selective role of pollinators on the floral phenotype has been identified as the main force behind angiosperm diversification. However, in generalized plant–pollinator interactions this association may not be that evident, since pollinator assemblages vary in composition among populations, possibly influencing the direction and intensity of floral … dailymotion highlander family tree

"WebTherefore, we briefly review mechanisms by which floral traits can affect diversification. We then consider the possible influences of four specific traits by comparing the species … " - Floral characters and species diversification

Floral characters and species diversification

WebFloral characters and species diversiÞcation Kathleen M. Kay, Claudia Voelckel, Ji Y. Yang, Kristina M. Hufford, Debora D. Kaska, and Scott A. Hodges Departmen t o f … Webversity in ﬂoral morphology and ecology, species in the genus are largely interfertile (Prazmo 1965; Taylor 1967), and therefore, genetic analysis of the traits differentiating …

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WebApr 16, 2008 · It has been proposed frequently, from Darwin’s time onwards, that specialized pollination increases speciation rates and thus the diversity of plant species … WebNov 2, 2024 · The diagnostic characters for species delimitation rely on floral traits, such as inflorescence type, flower number per inflorescence, color of the tepals, stamen …

WebOct 25, 2024 · The diversity of floral morphology among plant species has long captured the interest of biologists and led to the development of a number of explanatory theories. Floral morphology varies substantially within species, and the mechanisms maintaining this diversity are diverse. WebJan 1, 2009 · Indeed, 48 reports that 38% of the characters used to taxonomically distinguish among bee-pollinated related species are …

WebJun 16, 2009 · One way to test for repeatable trends has been to test whether the evolution of particular traits is associated with species diversity. For example, clades of flowering plants that have independently evolved floral nectar spurs show a statistically significant trend for increased species diversity compared with nonspurred clades (24–26). This ... WebJun 1, 2012 · The exceptional species richness of angiosperms has frequently been attributed to their floral adaptations for biotic pollination 1, 2, 3.The merging of knowledge about the functional significance of floral traits 4, 5 and sensory perception and behavior of animal pollinators [6] has spawned a large modern research program that investigates …

WebApr 12, 2024 · encouraged the use of floral characters as a proxy for pollination interactions in macro-evolutionary . 5. 107. 108. 109. ... and by including the species diversification process itself [Binary ...

WebThe petals of many representatives during anthesis form a closed pollination chamber. Protogynous dichogamy with strong scent emissions especially during the pistillate stage is a character of nearly all species. Scent emissions can be enhanced by thermogenesis. The prevailing reproductive system in the family seems to be self-compatibility. biology bugbears microscopeWebMar 23, 2012 · Indeed, for animal-pollinated species, floral adaptations to functional groups of pollinators often result in character specialization that could lead to reproductive isolation and speciation [2 ... biology bugbears plant responsesWebAug 1, 1999 · Phylogenetic studies have suggested that the acquisition of key floral characters, such as the spurs of columbine flowers, which foster interactions with novel kinds of pollinators, can launch the adaptive radiation of flowering plant groups (Armbruster 1996, Hodges 1997). Ultimately, the process of diversification in flower form among … biology bugbears mitosisWebOct 13, 2024 · Floral color plays a key role as visual signaling and is therefore of great importance in shaping plant-pollinator interactions. Iris (Iridaceae), a genus comprising over 300 species and named after the … dailymotion hetty wainthroppWebApr 16, 2008 · It has been proposed frequently, from Darwin’s time onwards, that specialized pollination increases speciation rates and thus the diversity of plant species (i.e. clade species richness). We suggest here that the correlation between clade species richness and floral specialization is real, but that clade species richness is frequently … biology bugbears protein synthesisWebpromote species diversity using two species of Aquilegia, Aquilegia formosa and Aquilegia pubescens, which form narrow hybrid zones. Floral visitors strongly discriminated … biology bugbears nephronWebAug 1, 2024 · The most recent common ancestor of all living angiosperms likely existed ∼ 140–250 million years ago 1, 2, 3. In contrast, the most recent common ancestor of all extant seed plants (that is ... biology bugbears the eye