This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "Epicotyl" – news · newspapers · books · scholar · JSTOR(February 2023)
An epicotyl is important for the beginning stages of a plant's life. It is the region of a seedling stem above the stalks of the seed leaves of an embryo plant. It grows rapidly, showing hypogeal germination, and extends the stem above the soil surface. A common misconception is that the epicotyl, being closer to the apex of the plant, is the first part to emerge after germination - rather, the hypocotyl, the region of the stem between the point of attachment of the cotyledons and the root - forms a hook during hypogeal germination and pushes out of the soil, allowing the more delicate tissues of the plumules and apical meristem to avoid damage from pushing through the soil. The epicotyl will expand and form the point of attachment of the shoot apex and leaf primordia or "first true leaves". Cotyledons may remain belowground or be pushed up aboveground with the growing stem depending on the plant species in question.
In plant physiology, the epicotyl is the embryonic shoot above the cotyledons. In most plants the epicotyl will eventually develop into the leaves of the plant. In dicots, the hypocotyl is what appears to be the base stem under the spent withered cotyledons, and the shoot just above that is the epicotyl. In monocot plants, the first shoot that emerges from the ground or from the seed is the epicotyl, from which the first shoots and leaves emerge.
Lengthening of the epicotyl is thought to be controlled by the phytochrome photoreceptors.
"epicotyl." A Dictionary of Biology. 2004. Encyclopedia.com. 3 Dec. 2015
May 03, 2024
epicotyl, this, article, relies, largely, entirely, single, source, relevant, discussion, found, talk, page, please, help, improve, this, article, introducing, citations, additional, sources, find, sources, news, newspapers, books, scholar, jstor, february, 20. This article relies largely or entirely on a single source Relevant discussion may be found on the talk page Please help improve this article by introducing citations to additional sources Find sources Epicotyl news newspapers books scholar JSTOR February 2023 This article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help improve this article by introducing more precise citations February 2023 Learn how and when to remove this message An epicotyl is important for the beginning stages of a plant s life It is the region of a seedling stem above the stalks of the seed leaves of an embryo plant It grows rapidly showing hypogeal germination and extends the stem above the soil surface A common misconception is that the epicotyl being closer to the apex of the plant is the first part to emerge after germination rather the hypocotyl the region of the stem between the point of attachment of the cotyledons and the root forms a hook during hypogeal germination and pushes out of the soil allowing the more delicate tissues of the plumules and apical meristem to avoid damage from pushing through the soil The epicotyl will expand and form the point of attachment of the shoot apex and leaf primordia or first true leaves Cotyledons may remain belowground or be pushed up aboveground with the growing stem depending on the plant species in question In plant physiology the epicotyl is the embryonic shoot above the cotyledons In most plants the epicotyl will eventually develop into the leaves of the plant In dicots the hypocotyl is what appears to be the base stem under the spent withered cotyledons and the shoot just above that is the epicotyl In monocot plants the first shoot that emerges from the ground or from the seed is the epicotyl from which the first shoots and leaves emerge Lengthening of the epicotyl is thought to be controlled by the phytochrome photoreceptors See also editHypocotyl Radicle PlumuleExternal links edit epicotyl A Dictionary of Biology 2004 Encyclopedia com 3 Dec 2015 Retrieved from https en wikipedia org w index php title Epicotyl amp oldid 1188319428, wikipedia, wiki, book, books, library,
