Sunday, September 21, 2014

Factors That Affecting Of Growth And Development In Plants


Plants will not grow on its own, without the presence of several factors,influencing the factors that affect of growth and development in plants can be differentiated into two types,namely internal and external factors,internal factors are factors that affect plant growth and development which is derived from the plant's own body,the internal factors in plants can be differentiated into intracellular and intercellular factors,the example of intracellular factors is gen,whereas intercellular factors that affect growth and development in plants namely hormones.while the external factors are the factors that affect the growth and development of plants,that are from outside of its own plants.

  Hormon are internal factors that affect growth and development in plants,several hormons the affect growth and development in plants are auxin,gibberelins,cytokinins,ethylene gas,abscisic acid, traumalin acid,and kalin.auxin hormone has a function to stimulate the unfolding and cell division in plants,auxin activity is influenced by the gravity of the earth and light of the sun,auxin activity is inhibited when exposed to sunlight,which is why plants in the dark will be put in place quickly higher than in light place,gibereline hormone also has the function to stimulate shoot growth,while cytokinins are growth hormone that can interact with auxin to stimulate cell division,another function of cytokinin is to stimulate the growth of leaves and shoots,ethylene gas can interact with auxin to promote flowering such as the peneaple and mango,abscisic acid has the opposite function with auxin and giberelin,which inhibits cell division and exposition,while traumalin acid has the function to stimulate cell division at the injured tissue,while kalin hormone has a function to stimulate the formation of organs in plants.

  In addition to internal factors, growth and development in plants is also influenced by external factors, external factors that affect growth and development in plants include of water, light, moisture, nutrients, temperature, oxygen, and also the level of acidity.

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