PLANTS NEED TO PROMOTE and INHIBIT GROW??

 

In the world of plants , regulating substances have a role in growth and development survival. On this, by Went (a German physiologist nation) has argued that "Ohne wuchstoff, kein wachstum" means; without substance regulating growth means no growth.

And the terminology, by plant physiologists have been given the constraints - constraints on growth regulator substances, (growth and regulators), hormones and nutrients (nutrient). Substances in plant growth regulator (plant regulator), are organic compounds that are not nutrient (nutrients), which in small amounts can support (promote), block (inhibit) and can alter plant physiological processes.
Growth hormone (plant hormone), are organic substances produced by plants, which in low concentrations can regulate physiological processes. Hormone usually move from the plants that produce the parts to other plants.

Substances in plant growth regulator consists of five groups of Auxin, gibberellin, cytokinin, ethylene, and inhibitors with unique characteristics and different effects on physiological processes.
Auksin are compounds characterized by their ability to support the extension of the cell (cell elongation) at the top, with a chemical structure characterized by the presence of indole ring. While gibberelin is meant compounds containing Gibban skeleton, stimulating cell division (cell division), cell elongation or both. Next Cytokinin compounds having the basic form of adenine (6 - Amino Purine) which supports the occurrence of cell division. Regulator substance that grows to four is Ethylene, is very simple compounds consisting of carbon atoms 2 and 4 atoms of hydrogen. In normal circumstances ethylene is a gas, has a role in the process of fruit ripening in climacteric phase. Growth regulator and substance of the latter inhibitor. These inhibitors are a group of substances that inhibit the growth regulator in the biochemical and physiological processes for the four other growth regulator substances.

Fifth substance of this growth regulator has been made in sybthetis for agricultural purposes and research, which is certainly beneficial to the field of natural sciences and agriculture.

To learn more about a fifth of this growth regulator substances, both in terms of biochemical or physiological plant can be followed on the next post ... ... still check this blog.

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Abidin, Z. 1990. Dasar – Dasar Pengetahuan Tentang Zat Pengatur Tumbuh. Bandung : Angkasa