HIPOGEAL DAN EPIGEAL PDF

Cotyledons, Epicotyl, Epigeal Germination, Hypocotyl, Hypogeal Germination What is Epigeal Germination Epigeal germination is the type of germination in which the cotyledons rise out of the soil due to the elongation of the hypocotyl. The hypocotyl is the part of the stem of an embryo plant beneath the stalks of the cotyledons. After emerging out of the soil, these cotyledons are called seed leaves, which become photosynthetic as well. The second leaves derived from the plumule become true leaves.

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Cotyledons, Epicotyl, Epigeal Germination, Hypocotyl, Hypogeal Germination What is Epigeal Germination Epigeal germination is the type of germination in which the cotyledons rise out of the soil due to the elongation of the hypocotyl. The hypocotyl is the part of the stem of an embryo plant beneath the stalks of the cotyledons. After emerging out of the soil, these cotyledons are called seed leaves, which become photosynthetic as well.

The second leaves derived from the plumule become true leaves. In addition to food storage, cotyledons undergo photosynthesis and produce food for the development of the embryo. What is Hypogeal Germination Hypogeal germination is the other type of germination in which the cotyledons remain inside the soil. Therefore, its hypocotyl is short. Similarities Between Epigeal and Hypogeal Germination Epigeal and hypogeal germination are two methods of seed germination.

They are characterized by the relative position of the cotyledons to the soil during germination. Difference Between Epigeal and Hypogeal Germination Definition Epigeal germination refers to the germination of a plant that takes place above the ground while hypogeal germination refers to the germination of a plant that takes place below the ground.

Cotyledons In epigeal germination, the cotyledons emerge out of the soil while in hypogeal germination, the cotyledons remain inside the soil. This is the main difference between epigeal and hypogeal germination. Length of the Hypocotyl The hypocotyl is long in plants that show epigeal-gemination while the hypocotyl is short in plants that show hypogeal germination.

Length of the Epicotyl Epicotyl is short in plants that show epigeal germination while the epicotyl is long in plants that show hypogeal germination.

Photosynthetic Cotyledons The cotyledons in epigeal germination turn green and undergo photosynthesis while the cotyledons in hypogeal germination do not undergo photosynthesis. Energy for the Embryo Development In epigeal germination, the energy comes from the cotyledons, while, in hypogeal germination, the energy comes from the endosperm.

Occurrence Epigeal germination occurs in beans and castor while the hypogeal germination occurs in coconut, pea, and maize. The relative position of the cotyledons is determined by the length of the hypocotyl. The main difference between epigeal and hypogeal germination is the relative position of the cotyledons to the soil.

Reference: 1. Kumar, Srinibas.

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Perbedaan Perkecambahan Epigeal dan Hipogeal

December 30, Dalam dunia tumbuhan, mereka memiliki proses pertumbuhan dan perkembangbiakan tumbuhan yang berbeda. Dalam proses perkembangbiakan tumbuhan itu terdapat salah satu fase yang disebut dengan fase perkecambahan. Dalam penjelasannya secara sederhana, perkecambahan yang merupakan fase awal dari perkembangbiakan tumbuhan, adalah fase dimana embrio dalam biji dari tumbuhan tersebut yang awalnya berada dalam kondisi dorman, mengalami beberapa perubahan fisiologis yang kemudian dalam perkembangannya mengantarkan tumbuhan itu ke fase tumbuhan muda. Ketika sudah masuk tumbuhan muda, atau kecambah ini, tumbuhan kemudian tumbuh sesuai dengan perawatannya.

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Gambar dan Penjelasan Perkecambahan Epigeal dan Hipogeal (3 Penyusun Perkecambahan)

Perkecambahan merupakan permulaan atau awal pertumbuhan embrio di dalam biji. Biji yang berkecambah dapat membentuk planula karena di dalamnya mengandung embrio. Embrio atau lembaga mempunyai tiga bagian, yaitu radikula akar lembaga , kotiledon daun lembaga , dan kaulikalus batang lembaga. Perkecambahan terjadi karena pertumbuhan radikula calon akar dan pertumbuhan plumula calon batang.

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Difference Between Epigeal and Hypogeal Germination

Biji mengandung potensi yang dibutuhkan untuk tumbuh menjadi individu baru, misalnya embrio, cadangan makanan, dan calon daun calon akar. Sebutir biji mengandung satu embrio. Embrio terdiri atas radikula yang akan tumbuh menjadi akar dan plumula yang akan tumbuh menjadi kecambah. Cadangan makanan bagi embrio tersimpan dalam kotiledon yang didalamnya terkandung pati, protein dan beberapa jenis enzim. Kotiledon dikelilingi oleh bahan yang kuat, disebut testa. Testa berfungsi sebagai pelindung kotiledon untuk mencegah kerusakan embrio dan masuknya bakteri atau jamur ke dalam biji. Testa memiliki sebuah lubang kecil, disebut mikropil.

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