Results 111 to 120 of about 13,505 (246)

Heat drastically alters floral color and pigment composition without affecting flower conspicuousness

open access: yesAmerican Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Premise Floral pigments primarily serve to attract pollinators through color display and also contribute to protection against environmental stress. Although pigment composition can be plastically altered under stress, its impact on pollinator color perception remains poorly understood.
Eduardo Narbona   +6 more
wiley   +1 more source

Mapa geológico de la hoja Fortuna [PDF]

open access: green, 2009
Guillermo E. Alvarado
openalex  

Stacked scattering: The key to bright flowers lies in the mesophyll

open access: yesAmerican Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Premise The coloration of flowers is caused by wavelength‐selective absorption by pigments and scattering of light by floral structures. Although the molecular, physiological, and chemical properties of floral pigments have been studied in considerable detail, how floral structures contribute to the visual signal remains largely unknown.
Larissa De Paola   +5 more
wiley   +1 more source

Temperature and the evolution of flower color: A review

open access: yesAmerican Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Flower colors brighten our natural world. How and why have they evolved? How might ongoing global warming alter their evolutionary trajectories? In this review, I examine the influence of ambient temperature on the evolution of flower color.
Elizabeth P. Lacey
wiley   +1 more source

Pollinator, herbivore, and climatic selective pressures differ across a floral color transition zone

open access: yesAmerican Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Premise Spatial and temporal variations in climate and ecological interactions may underlie the origin and maintenance of floral color polymorphisms across a species range. Betalains are nitrogen‐containing, phylogenetically restricted pigments that, like the widespread and well‐studied anthocyanins and carotenoids, may attract pollinators ...
Sierra L. Jaeger   +5 more
wiley   +1 more source

Optimización de la extracción de polifenoles totales en hojas de Psidium guajava

open access: diamond
Derwin Viáfara   +3 more
openalex   +2 more sources

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