First record on secondary pollen presentation in the Cucurbitaceae family [PDF]
Plant Ecology and Evolution, 2015 Aim – Secondary pollen presentation in flowers has been described only in a few species across about 25 plant families. The first report of secondary pollen presentation in the Cucurbitaceae family is given here. Key result – Sechium talamancensis, endemic to high elevations in Costa Rica, presents nearly 39% of its pollen second arily on the distal ...
Jadeja, Shivani, Jadeja,Shivani
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Secondary and tertiary pollen presentation in Polygala myrtifolia and allies (Polygalaceae, South Africa) [PDF]
South African Journal of Botany, 1997 In Polygala myrtifolia and probably other South African Polygala species with asymmetrical flowers, pollen is first presented in a very unusual manner; eight sausage-like pollen masses are attached by their ends to the crook-shaped tip of the style (secondary pollen presentation). Floral morphology suggests that when the asymmetrical keel of the flower
Westerkamp, C., Weber, A.
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Gradual pollen presentation in Vaccinium corymbosum ‘Bluecrop’: an adaptive mechanism to improve pollination efficiency and outcrossing [PDF]
PeerJGradual pollen presentation is a plant reproductive mechanism to improve pollination efficiency and accuracy and promote outcrossing. Vaccinium corymbosum ‘Bluecrop’ has a typical gradual pollen presentation mechanism.
Chunzhi Zhou +4 more
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Natural and anthropogenic forest fires recorded in the Holocene pollen record from a Jinchuan peat bog, northeastern China [PDF]
, 2008 Pollen and charcoal particles from a Jinchuan peat (northeastern China) were examined to investigate the fire origin and interaction between climate, vegetation, fire and human activity during the Holocene.
Jiang, W +5 more
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Elaborated pollen packaging and dispensing mechanism induced by petal architecture from a Papaveraceae species [PDF]
PeerJ, 2019 Secondary pollen presentation (SPP) is a reproductive strategy that enhances the efficiency of pollen transfer, which has been explored for more than 200 years, resulting in 10 identified types of SPP.
Shanlin Yang +3 more
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Boletín de la Sociedad Argentina de Botánica, 2023 Background and aims: The onion (Allium cepa var. cepa) is an allogamous species in which male-sterile lines have been developed. However, the structure of the flower and floral nectaries have only been briefly described.
Ana Maria Gonzalez +3 more
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Perspectives on deciphering mechanisms underlying plant heat stress response and thermotolerance [PDF]
, 2013 Global warming is a major threat for agriculture and food safety and in many cases the negative effects are already apparent. The current challenge of basic and applied plant science is to decipher the molecular mechanisms of heat stress response (HSR ...
Fragkostefanakis, Sotirios +1 more
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Observations and modelling of birch pollen emission and dispersion from an isolated source [PDF]
, 2014 The occurrence of allergic diseases in western countries increased during the last decades due to greater awareness towards a hygienic lifestyle. The hygiene hypothesis relates the reduced expo- sure to microbial pollution to an underdevelopment of the
Michel, Dominik
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How does secondary pollen presentation affect the fitness of Polygala vayredae (Polygalaceae)? [PDF]
American Journal of Botany, 2008 Secondary pollen presentation is the relocation and presentation of pollen in floral structures (termed pollen presenters) other than the anthers. These pollen presenters are often found close to the stigma and have been hypothesized to increase the accuracy of pollen transfer, although no experimental studies have been done.
Sílvia, Castro +2 more
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Effective long-distance pollen dispersal in Centaurea jacea [PDF]
, 2009 BACKGROUND: Agri-environment schemes play an increasingly important role for the conservation of rare plants in intensively managed agricultural landscapes.
Albrecht, M. +15 more
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