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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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Carbohydrate analysis of floral nectar using medium infrared
Phytochemical Analysis, 2003Abstract An instrumental method based on a chemometric model of the medium region of the infrared (MIR) was developed to analyse total sugar content and the proportions of glucose, fructose and sucrose.
Cesar Mateo Flores, Ortiz +4 more
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WHY ARE SOME FLORAL NECTARS SCENTED?
Ecology, 2004Despite recent interest in the non-sugar components of floral nectar, nearly nothing is known about the ecological importance and phylogenetic distribution of scented nectar. If present, the scent of nectar would provide an honest signal to nectar-feeding animals.
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The exploitation of floral nectar in Eucalyptus incrassata by honeyeaters and honeybees
Oecologia, 1979During October and November, 1977, a study of nectar production and nectarivore foraging in Eucalyptus incrassata was conducted at Wyperfeld National Park in south-eastern Australia in order to evaluate the extent to which introduced honeybees (Apis mellifera) compete with native honeyeaters for floral nectar.
Hedley W, Bond, Wynne L, Brown
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Floral Nectar: Pollinator Attraction or Manipulation?
Trends in Ecology & Evolution, 2016The literature suggests that floral nectar acts principally to attract pollinator visitation (and/or revisitation), thereby enhancing plant reproductive success. However, floral nectar also manipulates pollinator behaviour during and immediately following plant visits, affecting pollen transfer, and plant reproduction. I argue that floral nectar should
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NMR-Based Metabolic Profiling ofAnigozanthosFloral Nectar
Journal of Natural Products, 2008Nuclear magnetic resonance spectroscopic methods have been used to characterize the chemical composition of floral nectar of Anigozanthos species with a minimum of sample preparation and without derivatization. The nectar of this passerine-pollinated plant is largely dominated by glucose and fructose, while sucrose occurs only at a minor level ...
Hölscher, D. +3 more
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Nectar extraction by hummingbirds: response to different floral characters
Oecologia, 1984Handling times of hummingbirds (Amazilia rutila and Cynanthus latirostris) visiting artificial flowers were a positive function of corolla length, nectar volume and nectar concentration. Corolla angle had no consistent effects on handling times. A multiple regression model explained 83% of the variation in handling times for these two species.
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Sugars in Mediterranean Floral Nectars: An Ecological and Evolutionary Approach
Journal of Chemical Ecology, 2005High-pressure liquid chromatography analyses of 73 plant species showed that the nectars of phrygana (East Mediterranean garrigue) mainly contain sucrose, glucose, and fructose, and traces of 10 minor sugars. Although the sucrose/hexose ratio was not related to plant life habit, ecological constraints had a detectable effect in shaping sugar ...
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On the Function of Floral Nectar in Croton suberosus (Euphorbiaceae)
Oikos, 1989In this paper we propose that the role of floral nectar in Croton suberosus is the attraction of herbivore pr,dators rather than reward for pollinators. The flowers of this monoecious plant species present several features associated with anemophily and wind is the prime pollen vector. Furthermore, in the field, levels of herbivore damage to the leaves
César A. Domínguez +3 more
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Sugar and Polyphenolic Diversity in Floral Nectar of Cherry
2020Cherries (Prunus avium L. and Prunus cerasus L.) are economically important fruit species in the temperate region. Both are entomophilous fruit species, thus need pollinators to give high yields. Since cherry’s flower is easy-to-reach, bees and other pollinators can smoothly collect nectar as a reward for doing transfer of pollen to receptive stigma ...
Fotirić-Akšić, Milica M. +5 more
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