Results 11 to 20 of about 343,034 (164)

Continuous and discontinuous nectar secretion in some pear cultivars

open access: yesInternational Journal of Horticultural Science, 2000
Hourly nectar secretion was studied in five pear cultivars between 1997-1999. Some cultivars (e.g. ‘Csákvári téli') secreted nectar continuously during the whole day, offering both nectar and pollen for pollinating insects.
Á. Farkas, Zs. Orosz-Kovács
doaj   +3 more sources

Effect of environmental conditions and genotype on nectar secretion in sunflower (Helianthus annuus L.)

open access: yesOilseeds and fats, crops and lipids, 2020
The sunflower crop provides an important honey flow for beekeepers. In France, beekeepers observed a decrease in honey yield from this crop these past years compared to the 1980s–1990s.
Chabert Stan   +16 more
doaj   +2 more sources

Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern [PDF]

open access: yesActa Botânica Brasílica, 2018
Hummingbirds are the main pollinators of most bromeliad species, whose nectar traits usually respond to the selective pressures imposed by pollinators.
Carlos E. P. Nunes   +4 more
doaj   +2 more sources

Dracula’s mistress: removal of blood-red floral nectar results in secretion of more nectar [PDF]

open access: yesPlant Ecology and Evolution, 2020
Background and aims – Flowers of Jaltomata quipuscoae (Solanaceae) secrete blood-red nectar that serves as an energy reward and possible attractant to pollinators.
Thomas Mione, Isaac Diaz
doaj   +4 more sources

The nectar secretion of some cultivated and spontaneous plant species

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 1967
The work presents the results of our researches on the nectar secretion of the following species: Fagopyrum esculentum Mnch., Phacelia tanacetifolia Benth., Salvia verticillata L., Trifolium hybridum L.
Florica JULA, Gh. ILLYES
doaj   +2 more sources

Summer grazing change fitness in a Tibetan lotus

open access: yesGlobal Ecology and Conservation, 2023
It is believed that grazing has an effect on the functioning and performance of flowers, as well as their association with pollinator preferences and plant reproduction.
Ruolan Wang   +6 more
doaj   +1 more source

Comparative study of wood betony (Stachys officinalis L) melliferousness in different habitat conditions [PDF]

open access: yesVeterinarski Glasnik, 2005
Nectar production in wood betony (Stachys officinalis L), grown under differ-microclimatic habitat conditions (forest and experimental field), was analyzed.
Mačukanović-Jocić Marina
doaj   +1 more source

Relationships between Flower Opening Time, Environmental Conditions, Corolla Opening Size and Nectar Production in Five Winter Oilseed Rape (Brassica napus L.) Cultivars in China

open access: yesJournal of Apicultural Science, 2023
Oilseed rape is an economically important crop and provides a good nectar resource. In this study, the nectar secretion characteristics of five winter oilseed rape (Brassica napus L.) cultivars in China were examined throughout the daytime.
Liu Ran   +6 more
doaj   +1 more source

Comparative analyses of the metabolite and ion concentrations in nectar, nectaries, and leaves of 36 bromeliads with different photosynthesis and pollinator types

open access: yesFrontiers in Plant Science, 2022
Floral nectar contains mainly sugars as well as smaller amounts of amino acids and further compounds. The nectar composition varies between different plant species and it is related to the pollination type of the plant. In addition to this, other factors
Thomas Göttlinger, Gertrud Lohaus
doaj   +1 more source

Nectar production in species of the Genus galanthus L. (Amaryllidaceae) from Serbia [PDF]

open access: yesGlasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2014
As a contribution to the study of the melliferous flora of Serbia, nectar production in two species of the genus Galanthus L. (G. nivalis L., and G. elwesii Hook.) was investigated.
Jovanović Filip   +2 more
doaj   +1 more source

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