About: Aperture (botany)     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:Settlement, within Data Space : dbpedia.org associated with source document(s)
QRcode icon
http://dbpedia.org/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FAperture_%28botany%29

Apertures are areas on the walls of a pollen grain, where the wall is thinner and/or softer. For germination it is necessary that the pollen tube can reach out from the inside of the pollen grain and transport the sperm to the egg deep down in the pistil. The apertures are the places where the pollen tube is able to break through the (elsewhere very tough) pollen wall.

AttributesValues
rdf:type
rdfs:label
  • Aperture (botany) (en)
  • Apertura (botánica) (es)
rdfs:comment
  • Apertures are areas on the walls of a pollen grain, where the wall is thinner and/or softer. For germination it is necessary that the pollen tube can reach out from the inside of the pollen grain and transport the sperm to the egg deep down in the pistil. The apertures are the places where the pollen tube is able to break through the (elsewhere very tough) pollen wall. (en)
  • Aperturas son áreas sobre las paredes de granos de polen donde las paredes son más delgadas o más suaves. Para la germinación es necesario que el tubo polínico esté al alcance del interior del grano de polen y transportar el esperma hacia la profundidad del huevo en el pistilo. Las aperturas son los lugares donde el tubo polínico es capaz de penetrar (dondequiera) la pared del polen. (es)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Lilium_auratum_-_pollen.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Epilobium_angust1-4.jpg
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
Link from a Wikipage to an external page
sameAs
dbp:wikiPageUsesTemplate
thumbnail
has abstract
  • Apertures are areas on the walls of a pollen grain, where the wall is thinner and/or softer. For germination it is necessary that the pollen tube can reach out from the inside of the pollen grain and transport the sperm to the egg deep down in the pistil. The apertures are the places where the pollen tube is able to break through the (elsewhere very tough) pollen wall. The number and configuration of apertures are often very exactly characteristic of different groups of plants. In Gymnosperms, pollen is usually sulcate, i.e. has a single aperture placed distally compared to the placement of the pollen grains in the meiotic tetrad. The largest clade of angiosperms, the Eudicots, usually have three apertures that run from the proximal side of the pollen grain to the distal side: this apertures are named colpi, and the pollen type of the Eudicots is called tricolpate. (en)
  • Aperturas son áreas sobre las paredes de granos de polen donde las paredes son más delgadas o más suaves. Para la germinación es necesario que el tubo polínico esté al alcance del interior del grano de polen y transportar el esperma hacia la profundidad del huevo en el pistilo. Las aperturas son los lugares donde el tubo polínico es capaz de penetrar (dondequiera) la pared del polen. A menudo, la cantidad y la configuración de las aperturas son muy similarmente características de diferentes grupos de plantas. En las gimnospermas, el polen es comúnmente surcado, con una sola apertura distal, comparada con la ubicación de los granos de polen en la tetrada (cuádruple) meiótica.​ El clado más grande de las angiospermas, las eudicotas, generalmente tiene tres aperturas, con trayectoria del lado proximal del grano de polen al lado distal. A estas aperturas se les denomina colpi (plural del latín colpus: surco o hendidura); a las correspondientes a las eudicotas, tricolpadas (trisurcadas).​ (es)
gold:hypernym
prov:wasDerivedFrom
page length (characters) of wiki page
foaf:isPrimaryTopicOf
is Link from a Wikipage to another Wikipage of
is Wikipage disambiguates of
is foaf:primaryTopic of
Faceted Search & Find service v1.17_git139 as of Feb 29 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (61 GB total memory, 51 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software