Interesting

The Barley Seed Structure

The Barley Seed Structure


We are searching data for your request:

Forums and discussions:
Manuals and reference books:
Data from registers:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.

Wiled barley image by Yanir Taflev from Fotolia.com

A barley seed is an embryonic plant. Barley seeds are monocotyledons, meaning that the embryo contains a single cotyledon, or “seed leaf.” Barley and other monocotyledon grasses have leaves with parallel veins.

Embryo

A covering that botanists called the integument covers the female ovule in a barley plant. When an egg cell from a barley ovule unites with a sperm cell, it forms a zygote, containing genes from both parent plants. The zygotes grows into a seed embryo. The integument covering the ovule becomes the covering of the barley seed. Many seeds remain dormant or have other conditions under which the seeds germinate, the process by which a plant emerges from an embryo. Barley seeds do not have a special period of dormancy. When they have water and warm temperature, they germinate.

  • A barley seed is an embryonic plant.
  • Many seeds remain dormant or have other conditions under which the seeds germinate, the process by which a plant emerges from an embryo.

Endosperm

The protective layer of endosperm tissue surrounds the embryo, which rests in a special sac. The endosperm collects fats, protein and starch for the growing embryo.

Gibberellic Acid

The seed absorbs water through a process called imbibition. The water moves a hormone called Gibberellic acid to the aleurone cells, which are protein in the endosperm. The Gibberellic hormone activates the DNA coding for amylase, an enzyme that turns the starch in the endosperm into maltose, sugar that the embryo needs for nutrition. This is the malt sugar that is the necessary ingredient for making beer, giving it its distinctive flavor. The protein-rich aleurone layer of the endosperm is what makes barley, brown rice and other grains “chewy.”

  • The protective layer of endosperm tissue surrounds the embryo, which rests in a special sac.
  • The Gibberellic hormone activates the DNA coding for amylase, an enzyme that turns the starch in the endosperm into maltose, sugar that the embryo needs for nutrition.

Seed Growth

The amylase is shipped into the embryo by endoplastic reticulum, usually abbreviated ER. The amylase goes to the golgi, a sac-like, flattened, layered organ near the nucleus of the barley seed embryo. The golgi loads proteins and carbohydrates into vesicles or bubbles bound by membranes for transport to the growing plant cells.

The Radicle

The radicle is the first part of the barley plant to emerge from the seed. Fueled by sugar carried by the visicles, the new plant grows larger.


Watch the video: SEED (June 2022).


Comments:

  1. Edur

    I am very sorry that I cannot help you with anything. But I am sure that you will find the right solution.

  2. Niles

    Wacker, it seems to me that is the remarkable phrase

  3. Birkhead

    I think, that you are not right. I am assured. Write to me in PM, we will discuss.

  4. Davet

    I hope everyone is normal

  5. Dalabar

    You are not right. I am assured. Write to me in PM, we will communicate.

  6. Ghoukas

    This brilliant idea is necessary just by the way



Write a message