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Showing 1 to 14 of 14 for “"nectar production"”.
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Characteristics of Nectar Production and Standing Crop in <em>Campsis radicans</em> (Bignoniaceae).
<p>We examined several aspects of nectar production in <em>Campsis radicans</em> to better understand how standing crop is affected and how production affects pollinator visitation. In all experiments, nectar and concentration of flowers were measured and total sugar was calculated. Flowers do not …
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Canopy light environment influences apple leaf physiology and fruit quality
… of canopy position, girdling, and defoliation on nectar production; whether instantaneous light measurements yield reliable estimates of cumulative seasonal light levels within the canopy; and the effect of the canopy light environment on spur leaf physiology and fruit quality. Defoliation of …
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Biosystematic and Ecological Investigations on Tuberous Aconitum (Ranunculaceae) of the United States
Nectary depth in Aconitum columbianum Nutt. in T. & G. shows little variation within populations but much continuous variation among populations. Mean nectary depth in populations ranges from 3.4 mm (SD = (+OR-)0.32) to 9.4 mm (SD = (+OR-)0.75). Nectary depth is geographically correlated, and …
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Pollination ecology of Mesembs
… highest degree of specialisation. Both scent and nectar production were relatively important in attracting flower visitors. Seasonality in flowering appeared to be a very important mechanism used to reduce overlap in insect visitors, especially among intrageneric species and those that had flowers …
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The ecology of rodent pollination in Liparia parva (Fabaceae)
… and geoflorous flowers, copious sucrose rich nectar, nocturnal anthesis and nectar production and a musky odour. The Fynbos endemic, Liparia parva (Fabaceae) has been recognised to exhibit several of these traits. Based on this observation, field studies were carried out on the Cape Peninsula, …
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Pollination Biology of <i>Ailanthus altissima</i> (Mill.) Swingle (Tree-of-Heaven) in the Mid-Atlantic United States
… visitation patterns associated with the tree's nectar profile. A list of taxa visiting trees within each of three sites was developed from collected insects. Overall, visitor assemblage was dominated by the soldier beetle <i>Chauliognathus marginatus</i> with large numbers of ants in the genera …
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The Phenotypic Impact of Transgenic Flower Color Variation in Ipomoea quamoclit.
… but it did have a highly significant effect on nectar production and number of flowers produced. Blue plants’ reproductive fitness improved slightly when they were crossed with non-identical blues and especially with red plants, but their pollen and ova were inferior to red plants’ whether …
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Specificity in the ecology and evolution of plant defense against herbivores: Identity and history
… in indirect herbivore resistance (extrafloral nectar production) than invasive populations. Additionally, the induction of indirect defense depended on herbivore feeding mode, suggesting tradeoffs among defenses against multiple herbivores. Further, I showed that even similarly feeding …
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Community ecology of small-mammal pollinated proteas
… were measured, including floral dimensions, nectar production and spectral reflectance. Live-trapping was conducted using Sherman traps and mean facial and faecal pollen load was determined for the different species caught. Furthermore pollinators were observed through footage from motion …
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Ecology of flowering and fruiting in Lotus corniculatus L.
… linear relationship between plant size, flower production and fruit production. The species regulates investment in flowers mainly at the level of the whole inflorescence, rather than altering number of flowers per inflorescence. Within individuals, there are no consistent trade-offs between …
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The factors responsible for the varying levels of UMF® in mānuka (Leptospermum scoparium) honey
… this variability were proposed and examined. Nectar derived from Leptospermum scoparium (mānuka), was confirmed to be the source of UMF®. The dilution of mānuka honey with nectar derived from other floral sources was found to proportionally reduce the UMF® in monofloral mānuka honey. The …
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Petals, pigments and pollinator preferences
… input or change over large areas), or the production of new cultivars which are more attractive to insects and which provide them with more or better nectar and pollen rewards for visiting (the basis of my research). With this latter approach, it will be possible to not only use the …
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The impacts of habitat fragmentation of Tsitsikamma fynbos, South Africa, on avian nectarivore presence, abundance, and pollination
… in flowering abundance can result in lower nectar production and availability. This reduction in reliable food, along with a lack of adequate habitat and nesting resources, can reduce the abundance of pollinators which, in turn, may result in reduced seed-set for the plant species that rely …