Results 11 to 20 of about 18,547 (301)

Floral Diversity and Pollination Syndromes in Agave subgenus Manfreda

open access: yesIntegrative And Comparative Biology, 2023
Synopsis The genus Agave is an ecological keystone of American deserts and both culturally and economically important in Mexico. Agave is a large genus of about 250 species. The radiation of Agave is marked by an initial adaptation to desert environments and then a secondary diversification of species associated with pollinator groups ...
Bryan N MacNeill   +6 more
openaire   +2 more sources

A few essential genetic loci distinguish Penstemon species with flowers adapted to pollination by bees or hummingbirds.

open access: yesPLoS Biology, 2023
In the formation of species, adaptation by natural selection generates distinct combinations of traits that function well together. The maintenance of adaptive trait combinations in the face of gene flow depends on the strength and nature of selection ...
Carolyn A Wessinger   +5 more
doaj   +1 more source

Rethinking the pollination syndromes in Hymenaea (Leguminosae): the role of anthesis in the diversification

open access: yesAnais da Academia Brasileira de Ciências, 2021
Floral traits associated with functional groups of pollinators have been largely employed to understand mechanisms of floral diversification. Hymenaea is a monophyletic legume genus widely recognized to being bat-pollinated, with nocturnal anthesis and ...
ISYS M. SOUZA   +3 more
doaj   +1 more source

Floral syndrome in Amelanchier nantucketensis (Rosaceae). I. Floral density, bee activity, and characterization of andropetaly

open access: yesCanadian Journal of Botany, 1997
The clonal shrub Amelanchier nantucketensis is andropetalous; a variable number of petals as well as normal anthers both bear germinable pollen. To determine whether floral density associated with andropetaly is related to activity of native bees on flowers, we compared Amelanchier nantucketensis to Amelanchier humilis and Amelanchier stolonifera ...
Dibble, Alison C., Drummond, Francis A.
openaire   +4 more sources

Genetic architecture of pollination syndrome transition between hummingbird-specialist and generalist species in the genus Rhytidophyllum (Gesneriaceae) [PDF]

open access: yesPeerJ, 2015
Adaptation to pollinators is a key factor of diversification in angiosperms. The Caribbean sister genera Rhytidophyllum and Gesneria present an important diversification of floral characters.
Hermine Alexandre   +3 more
doaj   +2 more sources

Convergence without divergence in North American red-flowering Silene

open access: yesFrontiers in Plant Science, 2022
Combinations of correlated floral traits have arisen repeatedly across angiosperms through convergent evolution in response to pollinator selection to optimize reproduction.
Andrea E. Berardi   +6 more
doaj   +1 more source

Nectar, Floral Morphology and Pollination Syndrome in Loasaceae subfam. Loasoideae (Cornales) [PDF]

open access: yesAnnals of Botany, 2006
Loasaceae subfam. Loasoideae are mostly distributed in South America (sea level to over 4500 m) with a wide range of animals documented as pollinators. The aim was to investigate correlations between nectar parameters, flower morphology, pollination syndrome and phylogeny.Nectar was collected from 29 species from seven genera in the subfamily ...
Markus, Ackermann, Maximilian, Weigend
openaire   +2 more sources

Reproductive biology and nectar secretion dynamics of Penstemon gentianoides (Plantaginaceae): a perennial herb with a mixed pollination system? [PDF]

open access: yesPeerJ, 2017
Background In many plant species, pollination syndromes predict the most effective pollinator. However, other floral visitors may also offer effective pollination services and promote mixed pollination systems.
Lucía Salas-Arcos   +2 more
doaj   +2 more sources

Pollination by hummingbirds of Vriesea gigantea (Bromeliaceae) populations in Southern Brazil

open access: yesRodriguésia, 2020
The pollination syndrome hypothesis usually does not successfully apply to the diversity of floral phenotypes or help predict the pollinators of most plant species.
Gecele Matos Paggi   +2 more
doaj   +1 more source

Great Diversity of Insect Floral Associates May Partially Explain Ecological Success of Poison Ivy (\u3ci\u3eToxicodendron Radicans\u3c/i\u3e Subsp. \u3ci\u3eNegundo\u3c/i\u3e [Greene] Gillis, Anacardiaceae) [PDF]

open access: yes, 2018
Little is known about insect floral associates of poison ivy (Toxicodendron radicans, Anacardiaceae), despite the species’ ubiquity and importance in nature and society.
Senchina, David S, Summerville, Keith S
core   +2 more sources

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