Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Pollinator attraction"”.
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Floral Scent in Salix L. and the Role of Olfactory and Visual Cues for Pollinator Attraction of Salix caprea L.
The chemical composition of floral scent of different Salix species as well as its inter- and intraspecific variability were analysed. The role of floral scent for attracting flower visitors was examined in S. caprea by means of electroantennographic studies and bioassays. The relevance of …
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Exploring strategies to enhance pollination and yield in the field bean, Vicia faba L.
… may be used to improve crop yield through pollinator attraction. In this project, novel variation has been identified between commercial lines of <i>V. faba</i> in reward, attraction, and access traits. Using this variation, a hypothesis was formulated that <i>V. faba</i> lines possessing …
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Molecular Evolution of Anthocyanin Biosynthesis in Morning Glories
… transition that is associated with change in pollinator attraction in morning glories. A regulatory change in a branching gene in the flavonoid biosynthetic pathway restricted flux down the cyanidin-producing branch, conferring nearly exclusive production of red pelargonidin pigment in …
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Biosystematic and Ecological Investigations on Tuberous Aconitum (Ranunculaceae) of the United States
… depth differences adapt populations to different pollinator types. Populations with shallow nectaries are adapted to pollination by both short- and long-tongued bees, whereas bumblebee species with short tongues are not usually pollinators of flowers in populations with deep nectaries. In A. …
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Effects of plant viral pathogens on plant-pollinator relationships
… host plants that render them more attractive to pollinators. This builds on previous work, which showed that in tomato Cucumber mosaic virus (CMV) infection enhanced emission of volatile organic compounds (VOCs) that attracted bumblebees and enhanced pollination of infected plants. To test if …
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Population structure and the molecular genetics of petal spot pigmentation in Gorteria diffusa
… of the petal and are known to function in pollinator attraction across multiple systems. They occur within many plant lineages, but petal spots of the South African daisy species Gorteria diffusa are unusually complex. These elaborate structures are richly pigmented, deeply textured, and …
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Mechanisms controlling cell shape patterning in petals
… patterns allow entomophilous plants to attract pollinators and also help them deal with abiotic stress such as UV-levels and water loss. While previous research largely focused on pigmentation patterns, structural patterns created by the combination of different cell shapes have also been …
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Taxonomical use of floral scent data in apomictic taxa of Hieracium and Sorbus derived from hybridization
… the ecological function of scent components for pollinator attraction, to study their geographical variability or their evolution. In contrast, profiles of inflorescence scent compounds were rarely used for phylogenetic analyses and taxonomy. So far no investigations are available that focus on …
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Evolutionary dynamics of mating systems in populations of North American Arabidopsis lyrata
… as there is a lack of necessity to attract pollinators. I wanted to test whether these changes were apparent in A. lyrata by comparing pollinator attractants and sexual floral traits between strongly outcrossing and strongly inbreeding populations. I hypothesized that individuals depending …