Results 91 to 100 of about 54,144 (202)

Reproductive success through high pollinator visitation rates despite self incompatibility in an endangered wallflower [PDF]

open access: yes, 2016
PREMISE OF THE STUDY: Self incompatibility (SI) in rare plants presents a unique challenge—SI protects plants from inbreeding depression, but requires a sufficient number of mates and xenogamous pollination. Does SI persist in an endangered polyploid? Is
Herman, Julie A.   +6 more
core   +2 more sources

Assessing the role of dispersed floralresources for managed bees in providingsupporting ecosystem services for croppollination [PDF]

open access: yes, 2018
Most pollination ecosystem services studies have focussed on wild pollinators and their dependence on natural floral resources adjacent to crop fields. However, managed pollinators depend on a mixture of floral resources that are spatially separated from
Colville, Jonathan F.   +4 more
core   +2 more sources

Preliminary studies on different extracts of some honey bee products [PDF]

open access: yes, 2013
The aim of present study was to compare the phytochemical composition of different extracts of bee pollen, propolis and honey and to analyse the best solvent for maximum phytochemicals extraction. These preliminary studies are significant in locating the
Harjai, Kusum   +3 more
core   +2 more sources

Flower–bee versus pollen–bee metanetworks in fragmented landscapes

open access: yesProceedings of the Royal Society B: Biological Sciences
Understanding the organization of mutualistic networks at multiple spatial scales is key to ensure biological conservation and functionality in human-modified ecosystems. Yet, how changing habitat and landscape features affect pollen–bee interaction networks is still poorly understood.
Librán-Embid, Felipe   +9 more
openaire   +3 more sources

Efecto de factores ambientales en la actividad de la abeja y en el rendimiento de semilla de cebolla (Allium cepa L.) [PDF]

open access: yes, 2019
Los polinizadores son necesarios para producir semillas de cebolla. Esta especie es uno de los principales cultivos hortícolas. Dos tipos de variedades de cebolla se cultivan principalmente en todo el mundo: híbridos y cultivares de polinización abierta (
Caselles, Cristian   +2 more
core  

Molecular and phylogenetic characterization of honey bee viruses, Nosema microsporidia, protozoan parasites, and parasitic mites in China [PDF]

open access: yes, 2008
China has the largest number of managed honey bee colonies, which produce the highest quantity of honey and royal jelly in the world; however, the presence of honey bee pathogens and parasites has never been rigorously identified in Chinese apiaries.
Yang, Bu   +3 more
core   +2 more sources

Effects of therapeutants and temperature on pollen germination, pollen tube growth and fruit set in fruit crops : a thesis presented in partial fulfilment of the requirements for the degree of Master of Horticultural Science at Massey University [PDF]

open access: yes, 1980
This study involved assessments of therapeutant effects on pollination and fruit set; of temperature effects on pollen germination and pollen tube growth in apples, peaches and kiwifruits; of flowerage effects on pollen germination and pollen tube growth
Manandhar, Dwarika Narayan
core  

Pollen foraging preferences in honey bees and the nutrient profiles of the pollen

open access: yesScientific Reports
AbstractHoney bees are important insect pollinators that provide critical pollination services to fruit and nut crops in the US. They face challenges likely due to pressures associated with agricultural intensification related habitat loss. To better understand this, pollen preferences of foraging bees and the nutritional profile of pollen brought into
Seiji C. Yokota   +2 more
openaire   +3 more sources

Antibacterial Activity of Honey and Bee Pollen Collected from Bee Hives from Three Climatic Regions of Golestan Province Against some Clinical Isolates with High Antibiotic Resistance [PDF]

open access: yesResearch and Innovation in Food Science and Technology
Honey and bee pollen are among useful and valuable food products that have been used as medicine in treatment of diseases. This study aimed to evaluate the antibacterial potential of three samples of honey and bee pollen collected from bee hives of three
Amin Yazdani   +2 more
doaj   +1 more source

The limitations of the methods of identifying the floral source of honeys [PDF]

open access: yes, 1998
The pollen grains in honey reveal the types of plants that were around when the bees produced the honey, thus it is valid to use melissopalynology to determine the geographical origin of honeys, but there are several reasons why it is less valid for ...
Molan, Peter C.
core   +1 more source

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