Results 141 to 150 of about 186,142 (399)

Notes on the flowering and pollination of the endemic grassland Aloe reitzii var. reitzii (Asphodelaceae)

open access: yesBothalia: African Biodiversity & Conservation, 2017
Background: Aloe reitzii var. reitzii is a succulent with a restricted distribution in the montane grassland of eastern South Africa. It is a summer (late January–March) flowering succulent that grows on rocky outcrops at 1000 m–1600 m, and the ...
Craig T. Symes
doaj   +1 more source

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

open access: yesAmerican Journal of Botany, EarlyView.
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

Evaluating the effects of pollinator-mediated interactions using pollen transfer networks: evidence of widespread facilitation in south Andean plant communities.

open access: yesEcology Letters, 2016
Information about the relative importance of competitive or facilitative pollinator-mediated interactions in a multi-species context is limited.
Cristina Tur   +3 more
semanticscholar   +1 more source

Pollination in Piperaceae

open access: yesAnnals of the Missouri Botanical Garden, 1974
(Uploaded by Plazi for the Bat Literature Project) A study of four Piper species and one Pothomorphe species in Costa Rica showed that insects do visit some Piperaceae flowers and are probably involved in pollination. Due to the globular nature of the pollen it is not likelythat wind or rain are significantpollination agents.
openaire   +3 more sources

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

open access: yesAmerican Journal of Botany, EarlyView.
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

Cumulative individual seed production in the polycarpic Caesalpinia gilliesii (Fabaceae): effects of temporal variability in floral display, plant density and pollination [PDF]

open access: yes, 2016
In polycarpic species, floral display size and density of conspecific neighbours are time variable as well as their effects on pollination and fecundity.
Ashworth, Lorena   +2 more
core  

POLLINATION IN ORCHARDS.

open access: yesAnnals of Applied Biology, 1914
n ...
openaire   +2 more sources

Temperature and the evolution of flower color: A review

open access: yesAmerican Journal of Botany, EarlyView.
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

How Bees Respond Differently to Field Margins of Shrubby and Herbaceous Plants in Intensive Agricultural Crops of the Mediterranean Area [PDF]

open access: yes, 2019
(1) Intensive agriculture has a high impact on pollinating insects, and conservation strategies targeting agricultural landscapes may greatly contribute to their maintenance.
Carrasco, Aline   +4 more
core   +1 more source

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