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Cytokinins - Auxins - good read .

Discussion in 'Tips Tricks and knowledge base' started by hecno, Feb 14, 2015.

  1. hecno

    hecno Worm Hunter . General Staff

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    Rainy sunday , good day to study . [h=1]Using Plant Hormones[/h]Plant hormones are natural chemicals produced in minute quantities in one part of a plant and have a physiological effect when moved to another part of the plant; a chemical messenger.
    Hormones control growth or other physiological functions such as root initiation, flowering, fruit drop, etc. Unlike animal hormones, phytohormones are not produced in individual organs, but are produced by every cell at various times during a plant’s growth cycle. They are necessary for communication in plants because plants do not contain nervous systems. Naturally-produced hormones are properly called hormones or phytohormones. There are three major groups of plant hormones:








    [h=3]a) Auxins[/h]






    Auxins are plant hormones that influence cell enlargement, root initiation, and bud formation. They suppress the initiation of lateral buds.
    These messengers cause cells to elongate. When cells elongate on one side of a plant only, they cause the plant to bend. The elongation is irreversible and widely used in horticulture and agriculture. Perhaps one of the most familiar uses is in the elongation of green grapes, which provide growers with more fruit substance per bunch.
    The common rooting hormones available in most garden stores all contain auxins in minute concentrations. Auxins, usually indole-butric acid, are formed naturally in fruits, seeds, pollen, growing points, young leaves and developing buds. Auxins cause cells to grow and especially to elongate & auxins promote apical dominance.
    Keikiroot with a minute concentration of the auxin has been found advantageous for orchid root initiation and development.






    [h=3]c) Cytokinins[/h]





    Cytokinins are plant hormones that are involved in cell division, shoot multiplication and axillary bud proliferation (buds developing in the leaf axils). They help delay senescence (aging). If plants are too spindly, increased cytokinin will help foster shorter, thicker stems.
    Rather than affect cell growth, such as elongation or inhibiting dormancy, cytokinins promote the change in a standard plant cell to a cell that becomes a stem, a root, a leaf or a flower.
    It is this group of hormones that is of special interest to orchid growers. Cytokinins cause cells to differentiate into stems, leaves and eventually flowers.

    Cytokinins suppress this tendency of plants to reach for the light.






    [h=3]c) Gibberelic Acid or Gibberellins[/h]





    Gibberellins are a group of naturally occurring substances that influence cell enlargement and stem elongation. Gibberellins also supplement the actions of auxins and cytokinins.
    These hormones are isolated from many different plants, but primarily fungi and are used to increase the growth of many plants and seedlings because they function like plant hormones in stimulating the growth of roots, leaves and stems, the germination of seeds, etc. Now over fifty gibberellins have been isolated and are used commercially, primarily for stem elongation and seed germination. They have been used to induce flowering by breaking dormancy and they can be used to offset a plant’s requirements of long day exposure or periods of low temperature in order for it to flower.

    [​IMG][​IMG]
     
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  2. roodles.prease

    roodles.prease Auto Warrior

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    useful info
     
  3. vostok

    vostok Ancient

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    Common Sense and should be seen as common knowledge in this or any growing community

    often misunderstood and overlooked at many members expense

    got stretched or squat plant ...check here

    great post
     
  4. derek420colorado

    derek420colorado G.O.A.T

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    i was just doin some listenin about GA3 today
     
  5. Habitual

    Habitual Pollen Chucking Closet Hack

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    Anyone have application rates to share?

    I Will Start, @ 50ppm-Ga3. I use this after topping to offset any stunting/slowing. One spray after I take the top off, great for mainlining. It also grows the first few sets of leaves larger helping with faster vegetative growth when used with optimal conditions. I have done this with an auto aswell.
     
  6. Eyes on Fire

    Eyes on Fire Guy Smiley

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    nice read, I was lookig at oe of my books and they were yapping bout that but I was also looking at the three different types of trichomes LOL! trippy :D
     

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