Results 41 to 50 of about 11,229 (159)

Nectar dynamics and reproductive biology of Passiflora actinia Hook. (Passifloraceae) in Araucaria Forest

open access: yesActa Botânica Brasílica, 2018
Nectar production has an important role in pollinator attraction and successful fruit production in many self-incompatible angiosperm groups. The reproductive biology of Passiflora actinia was studied here and related to nectar dynamics.
Isabela Galarda Varassin   +5 more
doaj   +1 more source

Genetical studies of nectar and pollen production in sunflower [PDF]

open access: yesAgronomie, 1990
La composition et les caractéristiques quantitatives des productions de nectar et de pollen ont été étudiées sur 2 séries de lignées de tournesol et les hybrides issus de leurs plans factoriels de croisement (6x6 et 3x3). Des analyses du nectar par chromatographie en phase gazeuse et par une méthode électrolytique ont été comparées.
Vear, Felicity   +5 more
openaire   +5 more sources

Floral nectar reabsorption and a sugar concentration gradient in two long-spurred Habenaria species (Orchidaceae)

open access: yesBMC Plant Biology, 2023
Background Floral nectar is the most common reward flowers offered to pollinators. The quality and quantity of nectar produced by a plant species provide a key to understanding its interactions with pollinators and predicting rates of reproductive ...
Hai-Ping Zhang   +3 more
doaj   +1 more source

Factors affecting nectar sugar composition in chiropterophilic plants

open access: yesRevista Mexicana de Biodiversidad, 2016
Most pollinators prefer the sugars present in the nectar they consume, so it has been hypothesized that they have molded nectar trait evolution. However, nectar-feeding bats do not exhibit preferences for the sugars present in their diet. We analyzed the
Nelly Rodríguez-Peña   +6 more
doaj   +1 more source

The Patterns of Intraspecific Variations in Mass of Nectar Sugar along a Phylogeny Distinguish Native from Non-Native Plants in Urban Greenspaces in Southern England

open access: yesPlants, 2023
To serve human needs, non-native species are selected based on an array of functional traits, which generally confer competitive advantages to these species in their recipient environments. Identifying non-obvious functional traits that indirectly inform
Kowiyou Yessoufou
doaj   +1 more source

Warming temperatures affect meadow‐wide nectar resources, with implications for plant–pollinator communities

open access: yesEcosphere, 2022
Nectar production may be a point of sensitivity that can help link primary and secondary trophic responses to climate shifts, and is therefore important to our understanding of ecosystem responses.
Audrey L. McCombs   +4 more
doaj   +1 more source

Nectar Replaced by Volatile Secretion: A Potential New Role for Nectarless Flowers in a Bee-Pollinated Plant Species

open access: yesFrontiers in Plant Science, 2018
The presence of nectarless flowers in nectariferous plants is a widespread phenomenon in angiosperms. However, the frequency and distribution of nectarless flowers in natural populations, and the transition from nectariferous to nectarless flowers are ...
Elza Guimarães   +5 more
doaj   +1 more source

Nectar Production in Abutilon III. Sugar Secretion [PDF]

open access: yesAustralian Journal of Biological Sciences, 1971
Analysis of Abutilon nectaries shows that the sugar content of the nectary rises sharply as nectar secretion begins. Nectar secretion on the plant occurs at a steady rate of 2-5 mg total sugar per flower. hour for 36-48 hr. A total of about 100 mg sugar per flower is secreted, and this is about seven times the maximum sugar content of the nectary at ...
Nele Findlay, ML Reed, FV Mercer
openaire   +1 more source

Intraspecific variability of floral nectar volume and composition in rapeseed (Brassica napus L. var. oleifera)

open access: yesFrontiers in Plant Science, 2016
Numerous angiosperms rely on pollinators to ensure efficient flower fertilization, offering a reward consisting of nourishing nectars produced by specialized floral cells, known as nectaries.
Michele eBertazzini, Giuseppe eForlani
doaj   +1 more source

Intraspecific Variation in Nectar Chemistry and Its Implications for Insect Visitors: The Case of the Medicinal Plant, Polemonium Caeruleum L.

open access: yesPlants, 2020
Floral nectar, being a primary reward for insect visitors, is a key factor in shaping plant–pollinator interactions. However, little is known about the variability in nectar traits, which could potentially affect pollinators and the reproduction of the ...
Justyna Ryniewicz   +6 more
doaj   +1 more source

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