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COMPETITION FOR COMPOSITION: LESSONS FROM NECTAR-FEEDING ANT COMMUNITIES
Ecology, 2004Studies of the relationship between the composition of nectar and its consumers often focus on single or very few species, thus ignoring dynamics in diverse assemblages. Conversely, most documented patterns of nectarivore communities have not been linked to nectar quality measures.
Blüthgen, Nico, Fiedler, Konrad
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Nectar sugar composition in Erica
Biochemical Systematics and Ecology, 1995Abstract The nectar sugar compositions of 50 species of Erica have been analysed by HPLC. A marked dichotomy in nectar sugars was evident within the genus. Of the ornithophilous species analysed, 29 had sucrose-dominant nectars and eight had hexose-dominant nectars.
Keith Barnes +2 more
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Nectary Structure, Nectar Secretion Patterns and Nectar Composition in Two Helleborus Species
Plant Biology, 1999Abstract: The morphological and cytological characteristics of nectaries of Helleborus foetidus and H. bocconei during the secretory period are reported. The nectaries are derived from modified petals and secrete nectar continuously for about 20 days; they consist of a single layered epidermis, nectar‐producing parenchyma and photosynthesizing ...
VESPRINI J. L., NEPI M., PACINI E.
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Floral nectar composition ofPeganum harmalaL.
Natural Product Research, 2009Chemical composition of the floral nectar of Peganum harmala, a herbaceous medicinal perennial of the family Zygophyllaceae, was analysed using high-performance liquid chromatography technique. The nectar sugar detection experiments resulted in 33.1, 39.8 and 27.4%, respectively, for fructose, glucose and sucrose, upon which the nectar was classified ...
A, Movafeghi +4 more
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Floral nectar chemical composition of some species from Patagonia
Biochemical Systematics and Ecology, 1997Abstract Floral nectar chemical compositions of 28 species native to Argentinian Patagonia are reported. Most data obtained are new reports at the generic and/or the specific level. Nectars of these species show high mean concentrations (42.35±15.56; %, wt/total wt of solution).
Gabriel Bernardello +2 more
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Nectar sugar composition in the subfamily Alloideaec (Aphodelaceae)
Biochemical Systematics and Ecology, 1993Abstract HPLC analyses of nectar samples from 82 species of the genera Aloe, Astroloba, Chortolirion, Gasteria, Haworthia, Kniphofia, Lomatophyllum and Poelnitzia have shown that the sugar compoisition of nectar is remarkably invariable within each of the genera.
Ben-Erik Van Wyk +5 more
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Journal of Economic Entomology, 2000
Floral nectar characteristics of nine inbred lines of onion (Allium cepa L.) were examined to determine their influence on the attractiveness of the onion flowers to honey bees (Apis mellifera L.). Potassium concentrations and sugar concentrations of the nectar did not significantly correlate with the number of bee visits received by an umbel.
E M, Silva, B B, Dean
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Floral nectar characteristics of nine inbred lines of onion (Allium cepa L.) were examined to determine their influence on the attractiveness of the onion flowers to honey bees (Apis mellifera L.). Potassium concentrations and sugar concentrations of the nectar did not significantly correlate with the number of bee visits received by an umbel.
E M, Silva, B B, Dean
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Onion Hybrid Seed Production: Relation with Nectar Composition and Flower Traits
Journal of Economic Entomology, 2018Onion (Allium cepa L.) is one of the main vegetable crops. Pollinators are required for onion seed production, being honeybees the most used. Around the world, two types of onion varieties are grown: open pollinated (OP) and hybrids. Hybrids offer numerous advantages to growers, but usually have lower seed yields than OP cultivars, which in many cases ...
Soto Vargas, Verónica Carolina +3 more
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Folivory Affects Composition of Nectar, Floral Odor and Modifies Pollinator Behavior
Journal of Chemical Ecology, 2013Herbivory induces changes in plants that influence the associated insect community. The present study addresses the potential trade-off between plant phytochemical responses to insect herbivory and interactions with pollinators. We used a multidisciplinary approach and have combined field and greenhouse experiments to investigate effects of herbivory ...
Bruinsma, M. +6 more
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Nectar sugar composition in Southern African Papilionoideae (Fabaceae)
Biochemical Systematics and Ecology, 1993Abstract The nectar sugar composition of several genera of the subfamily Papilionoideae (Fabaceae) have been analysed, including many southern African endemic genera of the tribes Crotalarieae, Podalyrieae and Liparieae. Nectar sugars were found to be conservative characters with limited taxonomic value.
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