Global ETD Search
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Showing 1 to 20 of 325 for “"Pollination"”.
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Pollination ecology of Mesembs
… Succulent Karoo biome of South Africa. While its pollination ecology still remains largely unstudied, the system is thought to be overall generalised. This study sought to verify whether Mesemb species flowering during September and October in Vrolijkheit Nature Reserve have generalised or …
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Self-pollination in the genus Erica
… eight species of the diverse Erica genus. Self-pollination was found to occur in five out of the eight species, with mainly bird pollinated species having a high degree of selfing. The use of a broken anther ring as an indication of visitation and pollination of the flowers was also investigated …
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Small mammal pollination in Protea Witzenbergiana
Protea witzenbergiana possesses some features common to that of therophilous Proteas in the Cape Floristic Region, such as a cup-shaped, downwards-hanging inflorescence surrounded by red involucral bracts, which emits a yeasty, musky odour. The flowering season occurs in the winter and the plants …
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Rodent pollination in Androcymbium latifolium (Colchicaceae)
The repeated discovery of rodent pollination (therophily) has led to the concept of a rodent pollination syndrome. The adaptive plant traits that characterize this syndrome include flowers packed tightly into geoflorous and cryptic inflorescences, nocturnal anthesis and production of copious …
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Pollination of Basalt Daisy (Erigeron basalticus: asteraceae)
… individuals.</p> <p>This study focused on the pollination system of E. basalticus, specifically self-pollination and a determination of the most frequent insect visitors. Erigeron basalticus was determined to be primarily self-incompatible, therefore, pollinators will be important for …
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Evidence For Reduced Hawkmoth Pollination in Ruellia Humilis
… natural pollinators, and species adapted to pollination by hawkmoths may be especially susceptible. Allozyme markers were used to estimate the historic and current outcrossing rates of four Missouri populations of self-compatible Ruellia humilis in order to assess whether there has been a …
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Agricultural Spray Dynamics for Automated Pollination of Kiwifruit
… where effectiveness of natural wind and been pollination is limited. Specific focus is on kiwifruit and on spraying from a moving robotic platform. A suite of commercial and early-concept nozzles was analyzed and compared, then evaluated based on operating constraints. This was accompanied by …
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Pollination in a changing world: function and resilience
… these same ecosystem functions. Animal-mediated pollination is critical for the functioning of natural and production systems, but is strongly affected by agriculture, largely due to impacts on wild pollinators that require natural habitat. However, although more biodiverse communities often …
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A squeaky suspicion : rodent pollination in Protea nana
The pollination syndrome of Protea nana has been described as uncertain throughout the literature. Floral morphology, presence of pendulous inflorescences
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The ecology of rodent pollination in Liparia parva (Fabaceae)
The evolution of non-flying mammal pollination has given rise to a broad suite of adaptive plant traits including dull coloured and geoflorous flowers, copious sucrose rich nectar, nocturnal anthesis and nectar production and a musky odour. The Fynbos endemic, Liparia parva (Fabaceae) has been …
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Pollination Biology of Gentianales in a Southern Ecuadorian Montane Forest
The pollination and reproductive biology of mostly small flowered, taxonomically related species of the monophyletic order Gentianales (Apocynaceae including Asclepiadoideae, Gentianaceae, and Rubiaceae) was investigated in a tropical montane forest in southern Ecuador. This study is part of an …
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CMV Infection Affects Bumblebee Pollination Behaviour and Plant Reproductive Success
… success, I carried out a series of bumblebee pollination experiments. Bumblebees pollinate tomato by ‘buzzing’ (sonicating) the flowers, which releases pollen and enhances self-fertilization and seed production as well as pollen export. First, I established that CMV-infected tomato plants …
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Certain syndrome or complex conundrum? : the pollination of Erica lanuginosa
… by a rodent. Flowers excluded from external pollination showed no seed set, hence it is not considered to be self-pollinated. Nectar analysis are inconclusive as an indicator of pollination syndrome. Entomophily by a robust insect with a medium length proboscis is considered unlikely due to …
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The Pollination Ecology of Four Species of Local Vernal Herbaceous Angiosperms
The pollination ecology of four populations of vernal herbaceous angiosperms representing four locally common species of plants in the Central New York State area were studied. Three study sites were selected and research was conducted in the field by personal observation and accepted experimental …
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The pollination and scent ecology of selected Cape milkweeds (Apocynaceae: Asclepiadoideae)
… relationships. In South Africa, the pollination ecology of this diverse group has largely been focused in the summer rainfall region. This study focused on Western Cape species in the winter and summer-winter rainfall transition zones. The aim was to determine the pollinators of the …
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Pollination ecology of the simultaneously flowering Impatiens capensis and I. pallida
… depends on hummingbirds and small bees for pollination. Thus competition for pollinators between these Impatiens represents an important plant-plant and plant·pollinator interaction with potential consequences. When I. capensis is less frequented by bumblebees when sympatric with I. pallida, …
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