KOPS - The Institutional Repository of the University of Konstanz

Orientation and withdrawal of pollination drops in Cupressaceae s. l. (Coniferales)

Orientation and withdrawal of pollination drops in Cupressaceae s. l. (Coniferales)

Cite This

Files in this item

Files Size Format View

There are no files associated with this item.

DÖRKEN, Veit Martin, Armin JAGEL, 2014. Orientation and withdrawal of pollination drops in Cupressaceae s. l. (Coniferales). In: Flora : Morphology, Distribution, Functional Ecology of Plants. 209(1), pp. 34-44. ISSN 0367-2530. eISSN 1618-0585. Available under: doi: 10.1016/j.flora.2013.11.005

@article{Dorken2014Orien-29288, title={Orientation and withdrawal of pollination drops in Cupressaceae s. l. (Coniferales)}, year={2014}, doi={10.1016/j.flora.2013.11.005}, number={1}, volume={209}, issn={0367-2530}, journal={Flora : Morphology, Distribution, Functional Ecology of Plants}, pages={34--44}, author={Dörken, Veit Martin and Jagel, Armin} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/29288"> <dc:contributor>Jagel, Armin</dc:contributor> <dc:language>eng</dc:language> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/29288"/> <dcterms:abstract xml:lang="eng">Pollination in the Cupressaceae is studied ex situ, focused on orientation and withdrawal of pollination drops. Orientation of pollination drops is a constant feature in most taxa studied and important for pollen capture. Conspecific pollen causes a withdrawal of pollination drops, varying in time among species from 8 to 24 min, but with little variation within species. Pollination drops of each tested Cupressaceae taxon are also withdrawn when pollinated with foreign, but Cupressaceous pollen. However, they remain unchanged and are not withdrawn immediately when pollinated with pollen of other seed plants. The results clearly indicate that the time for the total withdrawal of pollination drops is strongly influenced by the evolutionary distance of the taxa being involved in the pollination process. Among closely related taxa the withdrawal is much more rapid than in distantly related ones. This points to an effective recognition system regulating the withdrawal of pollination drops, probably controlled by the nucellus. This recognition system can be regarded as an important preadaption for the evolution of a self-incompatibility mechanism. The withdrawal of pollination drops is thus not exclusively a physically induced process as suggested in some earlier studies. Pollination drops of several ovules can fuse to form a large common one, perhaps increasing by this way successful pollen capture.</dcterms:abstract> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-11-24T16:19:02Z</dcterms:available> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2014-11-24T16:19:02Z</dc:date> <dc:creator>Dörken, Veit Martin</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dcterms:title>Orientation and withdrawal of pollination drops in Cupressaceae s. l. (Coniferales)</dcterms:title> <dc:contributor>Dörken, Veit Martin</dc:contributor> <dc:creator>Jagel, Armin</dc:creator> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dcterms:issued>2014</dcterms:issued> </rdf:Description> </rdf:RDF>

This item appears in the following Collection(s)

Search KOPS


Browse

My Account