Results 221 to 230 of about 2,036 (250)
Floral attractants and rewards to pollinators in Mangifera indica L.
Scientia HorticulturaeM Sanchez +2 more
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Journal of Chemical Ecology, 2004
We report the chemical composition of the floral rewards and the fragrance of 10 Maxillariinae (Orchidaceae) species. The species that offer rewards (labellar secretions) are usually scentless, the rewards being collected by bees. Chemical analyses revealed that the major chemical class of compounds present in the labellar secretions are triterpenoids.
Adriana Flach +2 more
exaly +3 more sources
We report the chemical composition of the floral rewards and the fragrance of 10 Maxillariinae (Orchidaceae) species. The species that offer rewards (labellar secretions) are usually scentless, the rewards being collected by bees. Chemical analyses revealed that the major chemical class of compounds present in the labellar secretions are triterpenoids.
Adriana Flach +2 more
exaly +3 more sources
Morning floral heat as a reward to the pollinators of the Oncocyclus irises
Oecologia, 2005Relationships between flowering plants and their pollinators are usually affected by the amount of reward, mainly pollen or nectar, offered to pollinators by flowers, with these amounts usually positively correlated with floral display. The large Oncocyclus iris flowers, despite being the largest flowers in the East Mediterranean flora, are nectarless ...
Yuval, Sapir, Avi, Shmida, Gidi, Ne'eman
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Differential Floral Rewards and Pollination by Deceit in Unisexual Flowers
Oikos, 1989Male and female unisexual flowers often offer different levels of rewards for pollinators and in some species pollination is apparently based on deception. A review of the literature indicates that male flowers commonly offer more reward than female, although when the reward is nectar, female flowers sometimes offer more than male.
Mary F. Willson, Jon Ågren, Jon Agren
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Secondary Compounds in Floral Rewards of Toxic Rangeland Plants: Impacts on Pollinators
Journal of Agricultural and Food Chemistry, 2014The study of plant secondary chemistry has been essential in understanding plant consumption by herbivores. There is growing evidence that secondary compounds also occur in floral rewards, including nectar and pollen. Many pollinators are generalist nectar and pollen foragers and thus are exposed to an array of secondary compounds in their diet.
Rebecca E, Irwin +4 more
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2011
This chapter examines a variety of rewards that can be obtained by pollinators from flower visits, including oils, waxes, scents, and resins and gums. Fatty oils as an offering in flowers are now known from at least eighty genera across several families and from nearly 1 per cent of flowering plant species.
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This chapter examines a variety of rewards that can be obtained by pollinators from flower visits, including oils, waxes, scents, and resins and gums. Fatty oils as an offering in flowers are now known from at least eighty genera across several families and from nearly 1 per cent of flowering plant species.
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Floral Heat Rewards and Direct Benefits to Insect Pollinators
Annals of the Entomological Society of America, 1995Some Arctic and alpine flowers are bowl-shaped solar collectors whose temperatures are significantly warmer than ambient air temperatures. One explanation for this trait is that it represents plant-pollinator coadaptation. Just as flowers providing nectar and pollen may be attractive to insects, warm flowers providing thermal refuges in a cold ...
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Pollination Unveiled: Exploring Floral Rewards
The first evidence of plant–pollinator interaction dates back to the late Cretaceous (~80 mya). This interplay has been traditionally reported as mutually beneficial because, as sessile organisms, plants gain access to the benefits of cross-pollination, whilst pollinators are rewarded with food, shelter, or nest materials.Marta Barberis +2 more
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Honeybee Pollination of Macadamia: Floral Rewards and their Effect on Pollen Flow
Journal of Apicultural Research, 1987SummaryPollination of the macadamia cultivar Keauhou (Macadamia sp.) was investigated in relation to the availability of its floral rewards, nectar and pollen, to honeybees. The nectar showed a mean daily ratio of reducing sugar to sucrose of 0·7 and this ratio exhibited a definite diurnal variation which was associated with bee visits to the area ...
V. Vithanage, T. J. Douglas
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Bumblebee Foraging at a "Hummingbird" Flower: Reward Economics and Floral Choice
American Midland Naturalist, 1985For a brief period in 1981 Bombus appositus queens visited Ipomopsis aggregata, a hummingbird-pollinated species with floral characteristics typical of that pollination syndrome. This behavior was not observed in other years. Despite the fact that Ipomopsis lacks floral features associated with bee visitation, bumblebees foraged on Ipomopsis at a rate ...
John M. Pleasants, Nickolas M. Waser
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