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- Double_fertilization abstract "Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes (sperm). It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower. The pollen grain then takes in moisture and begins to germinate, forming a pollen tube that extends down toward the ovary through the style. The tip of the pollen tube then enters the ovary and penetrates through the micropyle opening in the ovule. The pollen tube proceeds to release the two sperm in the megagametophyte.One sperm fertilizes the egg cell and the other sperm combines with the two polar nuclei of the large central cell of the megagametophyte. The haploid sperm and haploid egg combine to form a diploid zygote, while the other sperm and the two haploid polar nuclei of the large central cell of the megagametophyte form a triploid nucleus (triple fusion). Some plants may form polyploid nuclei. The large cell of the gametophyte will then develop into the endosperm, a nutrient-rich tissue which provides nourishment to the developing embryo. The ovary, surrounding the ovules, develops into the fruit, which protects the seeds and may function to disperse them.The two central cell maternal nuclei (polar nuclei) that contribute to the endosperm, arise by mitosis from the same single meiotic product that gave rise to the egg. The maternal contribution to the genetic constitution of the triploid endosperm is double that of the embryo.In a recent study done of the plant Arabidopsis thaliana, the migration of male nuclei inside the female gamete, in fusion with the female nuclei, has been documented for the first time using in vivo imaging. Some of the genes involved in the migration and fusion process have also been determined.Evidence of double fertilization in Gnetales, which are non-flowering seed plants, has been reported.".
- Double_fertilization thumbnail Mature_flower_diagram.svg?width=300.
- Double_fertilization wikiPageID "3757509".
- Double_fertilization wikiPageLength "9503".
- Double_fertilization wikiPageOutDegree "53".
- Double_fertilization wikiPageRevisionID "706179908".
- Double_fertilization wikiPageWikiLink Arabidopsis_thaliana.
- Double_fertilization wikiPageWikiLink Category:Plant_sexuality.
- Double_fertilization wikiPageWikiLink Egg_cell.
- Double_fertilization wikiPageWikiLink Electron_microscope.
- Double_fertilization wikiPageWikiLink Endosperm.
- Double_fertilization wikiPageWikiLink Fertilisation.
- Double_fertilization wikiPageWikiLink Flowering_plant.
- Double_fertilization wikiPageWikiLink France.
- Double_fertilization wikiPageWikiLink Fritillaria.
- Double_fertilization wikiPageWikiLink Fritillaria_tenella.
- Double_fertilization wikiPageWikiLink Gamete.
- Double_fertilization wikiPageWikiLink Gametophyte.
- Double_fertilization wikiPageWikiLink Germination.
- Double_fertilization wikiPageWikiLink Gnetum.
- Double_fertilization wikiPageWikiLink Gynoecium.
- Double_fertilization wikiPageWikiLink In_vivo.
- Double_fertilization wikiPageWikiLink Kiev.
- Double_fertilization wikiPageWikiLink Lilium_martagon.
- Double_fertilization wikiPageWikiLink Megaspore.
- Double_fertilization wikiPageWikiLink Meiosis.
- Double_fertilization wikiPageWikiLink Microspore.
- Double_fertilization wikiPageWikiLink Mitosis.
- Double_fertilization wikiPageWikiLink Optical_microscope.
- Double_fertilization wikiPageWikiLink Ovary_(botany).
- Double_fertilization wikiPageWikiLink Ovule.
- Double_fertilization wikiPageWikiLink Ploidy.
- Double_fertilization wikiPageWikiLink Pollen.
- Double_fertilization wikiPageWikiLink Pollen_tube.
- Double_fertilization wikiPageWikiLink Polyploid.
- Double_fertilization wikiPageWikiLink Russian_Empire.
- Double_fertilization wikiPageWikiLink Sergei_Navashin.
- Double_fertilization wikiPageWikiLink Stamen.
- Double_fertilization wikiPageWikiLink File:Double_Fertilization.jpg.
- Double_fertilization wikiPageWikiLink File:Double_fertilization_in_arabidopsis_2.jpg.
- Double_fertilization wikiPageWikiLink File:Mature_flower_diagram.svg.
- Double_fertilization wikiPageWikiLinkText "Double fertilisation".
- Double_fertilization wikiPageWikiLinkText "Double fertilization".
- Double_fertilization wikiPageWikiLinkText "double fertilization".
- Double_fertilization wikiPageUsesTemplate Template:Botany.
- Double_fertilization wikiPageUsesTemplate Template:Reflist.
- Double_fertilization subject Category:Plant_sexuality.
- Double_fertilization hypernym Mechanism.
- Double_fertilization type Organisation.
- Double_fertilization type Redirect.
- Double_fertilization comment "Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes (sperm). It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower. The pollen grain then takes in moisture and begins to germinate, forming a pollen tube that extends down toward the ovary through the style.".
- Double_fertilization label "Double fertilization".
- Double_fertilization sameAs Q277657.
- Double_fertilization sameAs Doble_fecundación.
- Double_fertilization sameAs Doble_fecundació.
- Double_fertilization sameAs Doble_fecundación.
- Double_fertilization sameAs Kaheliviljastamine.
- Double_fertilization sameAs Double_fécondation.
- Double_fertilization sameAs הפריה_כפולה.
- Double_fertilization sameAs Doppia_fecondazione.
- Double_fertilization sameAs Zapłodnienie_podwójne.
- Double_fertilization sameAs m.06wc80_.
- Double_fertilization sameAs Подвійне_запліднення.
- Double_fertilization sameAs Q277657.
- Double_fertilization wasDerivedFrom Double_fertilization?oldid=706179908.
- Double_fertilization depiction Mature_flower_diagram.svg.
- Double_fertilization isPrimaryTopicOf Double_fertilization.