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.

Learn the definition of epicotyl and what the important epicotyl functions are. Discover what hypocotyl is and how epicotyl and hypocotyl differ...

An epicotyl, which extends above the cotyledon (s), is composed of the shoot apex and leaf primordia; a hypocotyl, which is the transition zone between the shoot and root; and the radicle. Angiosperm seed development spans three distinct generations, plus a new entity: the parent sporophyte, the…

种子萌发 后，由子叶到第1片真叶之间的部分，称为 上胚轴 （epicotyl）;子叶与根之间的一部分，称为 下胚轴 （hypocotyl）。 胚轴发育为连接茎和根的部分。 胚轴（plumular axis）是种子植物胚的组成部分之一，为子叶着生点与胚根之间的轴体。 种子萌发后，发育成连接茎和根的部分。 由子叶到第1片真叶之间的部分，称为“上胚轴”；子叶与根之间的一部分，称为“下胚轴”。

上胚轴（epicotyl）是2019年公布的植物学名词。 指植物种子的胚（embryo）中连结子叶节（胚轴上着生子叶的部位）和胚芽（plumule）的部分。 而在禾本科植物中的上胚轴是指芽鞘节（胚轴上着生胚芽鞘的部位）至胚芽的一段。

2025年2月17日 · The epicotyl and hypocotyl are essential parts of a plant seedling, playing crucial roles in its early development. The hypocotyl and epicotyl are regions of the seedling stem, found between the cotyledon and the radicle (hypocotyl) and between the cotyledon and plumule (epicotyl) respectively.

Epicotyl functions:- 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 and it grows rapidly, showing hypogeal germination, and extends the stem above the soil surface.

2023年2月24日 · The epicotyl is the portion of the seedling between the first set of true leaves and the cotyledon node. It is the first structure to emerge from the ground in species showing a hypogeous germination pattern.

2018年9月6日 · The main difference between hypocotyl and epicotyl is that the hypocotyl is between the cotyledonary node and the radicle whereas the epicotyl is between the plumule and the cotyledonary node. Furthermore, the hypocotyl elongates to bring the cotyledons out of the soil in epigeal germination while the epicotyl elongates in the hypogeal ...

2024年3月21日 · Hypocotyl is the stem-like part of a seedling below the cotyledons, connecting root and shoot, while epicotyl is above the cotyledons, leading to the first true leaves.