Floral characters and species diversification

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August undefined, 2024

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 ... WebAug 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 …

Phylogenetic evidence for pollinator-driven diversification of ...

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 … WebThe most biodiverse places on Earth are warm and wet (5–7).This is reflected in the latitudinal diversity gradient, the observation that species richness peaks near the … cth3 dqt-160s1

PHYLOGENY AND THE EVOLUTION OF FLORAL DIVERSITY …

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. 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 … 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 … cth3 dit-080s1

Floral Nectar Spurs and Diversification International …

Evolutionary steps in the reproductive biology of Annonaceae

WebAug 6, 2024 · Analyses of the evolution of floral morphology and symmetry broaden our understanding of the drivers of angiosperm diversification. Integrated within a flower, … 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 … earth gospelWebApr 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. cth39

"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 … " - Floral characters and species diversification

Floral characters and species diversification

WebJan 1, 2013 · Floral diversity among the hundreds of thousands of extant angiosperms is remarkable, but even the fossil record shows extensive variation in flower size and morphology, even among the very earliest … 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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WebJun 1, 2006 · many of the traits thought to affect clade diversity are ﬂoral in nature, because of their association with. reproduction and thus … WebOct 11, 2015 · The genus Fritillaria L. (Liliaceae), comprising approximately 140 species, is described as displaying a remarkable variety of flower …

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, … 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 ...

WebAug 13, 2024 · The evolution of four quantitative and two qualitative floral characters was mapped onto this phylogeny, demonstrating a reduction in flower size and number of flower parts in Monanthotaxis ... WebThe evolution of nectar spurs is highly correlated with increased species diversity across multiple independent lineages and thus provides strong support for the key innovation …

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 …

Webfloral characters (flowers as well as inflorescence) are important species’ descriptors. In general, many studies have shown that floral traits such as color, shape, size, fragrance, … cth3 hsp-040s1WebMay 11, 2016 · These floral features facilitate animal pollination, and their well-studied effects on plant–pollinator interactions are consistent with a role in shaping patterns of diversification. Bilateral floral symmetry is frequently proposed as a key innovation [14,53] and in our models, it affects diversification rates most consistently, occurring in ... earthgov propaganda earthgovWebAngiosperms 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 has been considered an important trait for pollinator attraction. However, over the past several decades, a growing body of evidence suggests the flower color is implied in … earthgov suitWebAug 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 ... cth3 h52-100s2Webries (Carroll, 2005; Darwin, 1859), and the remarkable floral diver-sity of angiosperms is one prime example. Floral diversity could have arisen via random drift in floral … earth gosurWebOct 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 … cth3t-01 firmy robot3t