Pollen dynamics of bumble-bee visitation on Echium vulgare
نویسندگان
چکیده
منابع مشابه
Flowering Dynamics and Pollinator Visitation of Oilseed Echium (Echium plantagineum)
Echium (Echium plantagineum L.) is an alternative oilseed crop in summer-wet temperate regions that provides floral resources to pollinators. Its seed oil is rich in omega-3 fatty acids, such as stearidonic acid, which is desired highly by the cosmetic industry. Seeds were sown in field plots over three years in western Minnesota in spring (early-sown) or early summer (late-sown), and flower ab...
متن کاملPyrrolizidine alkaloids of Echium vulgare honey found in pure pollen.
The pyrrolizidine alkaloids previously identified in floral honey attributed to Echium vulgare (Boraginaceae) have been detected (8000-14 000 ppm) in pure pollen collected from the anthers of Echium vulgare. Pyrrolizidine alkaloids and/or their N-oxides were isolated from the aqueous acid extracts of pollen by use of strong cation-exchange, solid-phase extraction and identified by liquid chroma...
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Inbreeding in plants typically reduces individual fitness but may also alter ecological interactions. This study examined the effect of inbreeding in the mixed-mating annual Mimulus guttatus on visitation by pollinators (Bombus impatiens) in greenhouse experiments. Previous studies of M. guttatus have shown that inbreeding reduced corolla size, flower number, and pollen quantity and quality. Us...
متن کاملEchium vulgare L
Changes in the composition of fatty acids (FA) were determined in lipid extracts isolated from developing ovaries containing ovules and developing seeds of Echium vulgare L. The samples were collected successively over 20 days beginning with the first day after flowering. The contents of the n-6 FA family members, i.e., γ-linolenic (GLA) (C18 : 3) and linoleic (LA) (C18 : 2) acids changed in a ...
متن کاملFunctional Property of Honey from Echium vulgare
Chemical property of honey from Echium vulgare was investigated. In comparison with other honey species, the contents of total phenolic compounds and total flavonoids were the highest. α-Amylase activity was also extremely high: about three to nine hundred times as much as those of other honey species. The antioxidative activity of honey was investigated using four different methods. Honey from...
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ژورنال
عنوان ژورنال: Functional Ecology
سال: 1997
ISSN: 0269-8463,1365-2435
DOI: 10.1046/j.1365-2435.1997.00124.x