Results 81 to 90 of about 53,416 (205)

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

Determination of Ascorbic Acid, Total Ascorbic Acid, and Dehydroascorbic Acid in Bee Pollen Using Hydrophilic Interaction Liquid Chromatography-Ultraviolet Detection

open access: yesMolecules, 2020
Ascorbic acid (AA) is one of the essential nutrients in bee pollen, however, it is unstable and likely to be oxidized. Generally, the oxidation form (dehydroascorbic acid (DHA)) is considered to have equivalent biological activity as the reduction form ...
Meifei Zhu   +3 more
doaj   +1 more source

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  

Epeoloides pilosulus (Cresson) Rediscovered in Michigan, with Notes on the Distribution and Status of its Macropis hosts. [PDF]

open access: yes, 2019
Epeoloides pilosulus (Cresson 1878) is one of the rarest bees in North America with only a handful of records since 1960. The last collection in Michigan was made in 1944.
Gibbs, Jason   +4 more
core   +2 more sources

Quality Assessment of Bee Pollen: A Cross Sectional Survey in Bulgaria

open access: yesJournal of Food Quality and Hazards Control, 2018
Background: Due to its nutrient content, a variety of spoilage microorganisms can grow in bee pollen, especially when handling practices are not appropriate. So, this survey was designed to assess the physicochemical and microbiological properties of bee
G. Beev   +4 more
doaj  

Bee pollen and its pharmacological properties

open access: yesCommunications Faculty of Science University of Ankara Series C Biology Geological Engineering and Geophysical Engineering, 2018
Bee pollen is a natural honey bee product that is considered a valuable resource for nutrients and energy. It is a health-enhancing value because of its wide variety of primary and secondary plant metabolites and enzymes and co-enzymes. Therefore, bee pollen is especially appreciated by consumers and used as an alternative drug.
openaire   +2 more sources

The diversity and floral hosts of bees at the Archbold Biological Station, Florida (Hymenoptera: Apoidea) [PDF]

open access: yes, 2002
A list is provided of 113 species of bees and their 157 known floral hosts at the Archbold Biological Station(ABS), a 2105 ha site on the Lake Wales Ridge in Highlands County in south-central Florida.
Deyrup, Mark   +2 more
core   +1 more source

Combined nutritional stress and a new systemic pesticide (flupyradifurone, Sivanto®) reduce bee survival, food consumption, flight success, and thermoregulation. [PDF]

open access: yes, 2019
Flupyradifurone (FPF, Sivanto®) is a new butenolide insecticide that, like the neonicotinoids, is a systemic nicotinic acetylcholine receptor (nAChR) agonist.
Nieh, James C, Tong, Linda, Tosi, Simone
core   +4 more sources

Effect of wall-disruption on nutrient composition and in vitro digestion of camellia and lotus bee pollens

open access: yesFood Science and Human Wellness
The nutrient digestion, absorption and biological activity of bee pollen may be limited due to the complex pollen wall. Here, the effect of superfine grinding technology on the release of nutrients from bee pollen were investigated, and their antioxidant
Yuan Yuan   +5 more
doaj   +1 more source

The Pollen Collected by Bumble-Bees

open access: yesThe Journal of Animal Ecology, 1951
This study was carried out in western Scotland (Dunbartonshire) where the Bombidae, though numerous, are represented by few species. Bombus lucorum L., B. agrorum Fabricius, B. hortorum L. and B. pratorum L. are all common, the first being perhaps the most abundant. Only two other species, B. terrestris L. and B.
openaire   +2 more sources

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