The Effect of Gibberellic Acid Paste on Abelmoschusesculentus Stem Elongation<br />JESYKA MELÉNDEZ, YADHIRA LUGO, ELAINE S...
INTRODUCTION<br />Stem elongation is regulated by several hormones, gibberellins being the most influential. <br />Gibbere...
INTRODUCTION<br />Experiments conducted with Silenearmeria, have proven that indeed [gibberellins are a controlling factor...
Purpose<br />To study the effect of GA on the stem development of A. esculentus.<br />Provide further insight.<br />
Hypothesis<br />Application of gibberellic acid to the stem is expected to increase elongation.<br />
METHODOLOGY<br /><ul><li>One time application Gibberellicacid paste to the stem.
Changes wererecorded over the period of 10 weeks (February 25th trough May 11th).</li></li></ul><li>Gibberellic Acid Paste...
Gibberellic Acid Paste Effects<br />
Results<br />The one time application of GA had no effect on the growth of the plants.<br />
Why?<br />Probably due to degradation of the GA on the stem.<br />
Okra Development<br />
Organ Energy Investment<br />
Root Cross Section<br />Pholem<br />Xylem<br />Lateral root<br />Cork Cambium<br />Epidermis<br />Cortex<br />Pericycle<br />
StemCross Section<br />Primaryxylem<br />pith<br />primaryphloem<br />Parenchyma<br />Vasc. Cambium<br />epidermis<br />co...
Leaf Cross Section<br />PallisadeParenchyma<br />Epidermis<br />Midvein<br />Collenchyma<br />
Fruit Cross Section<br />ovule<br />Locule<br />Placenta<br />ovary<br />
Literature Cited & References<br />Ait-Ali, T., Frances, S., Weller, J., Reid, J., Kendrick, R. and Kamiya Y. 1999. Regula...
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The Effect of Gibberellic Acid Paste on Abelmoschus esculentus Stem Elongation

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The Effect of Gibberellic Acid Paste on Abelmoschus esculentus Stem Elongation

  1. 1. The Effect of Gibberellic Acid Paste on Abelmoschusesculentus Stem Elongation<br />JESYKA MELÉNDEZ, YADHIRA LUGO, ELAINE SANTIAGO <br />
  2. 2. INTRODUCTION<br />Stem elongation is regulated by several hormones, gibberellins being the most influential. <br />Gibberellins are group of naturally occurring hormones in plants and also have an important developmental role in flowering, dormancy, sex expression, enzyme induction and senescence of leafs and fruits.<br />
  3. 3. INTRODUCTION<br />Experiments conducted with Silenearmeria, have proven that indeed [gibberellins are a controlling factor for stem elongation]<br />Timing is critical and quantity, when applying GA.<br />
  4. 4. Purpose<br />To study the effect of GA on the stem development of A. esculentus.<br />Provide further insight.<br />
  5. 5. Hypothesis<br />Application of gibberellic acid to the stem is expected to increase elongation.<br />
  6. 6. METHODOLOGY<br /><ul><li>One time application Gibberellicacid paste to the stem.
  7. 7. Changes wererecorded over the period of 10 weeks (February 25th trough May 11th).</li></li></ul><li>Gibberellic Acid Paste Effects<br />
  8. 8. Gibberellic Acid Paste Effects<br />
  9. 9. Results<br />The one time application of GA had no effect on the growth of the plants.<br />
  10. 10. Why?<br />Probably due to degradation of the GA on the stem.<br />
  11. 11. Okra Development<br />
  12. 12. Organ Energy Investment<br />
  13. 13. Root Cross Section<br />Pholem<br />Xylem<br />Lateral root<br />Cork Cambium<br />Epidermis<br />Cortex<br />Pericycle<br />
  14. 14. StemCross Section<br />Primaryxylem<br />pith<br />primaryphloem<br />Parenchyma<br />Vasc. Cambium<br />epidermis<br />collenchyma<br />
  15. 15. Leaf Cross Section<br />PallisadeParenchyma<br />Epidermis<br />Midvein<br />Collenchyma<br />
  16. 16. Fruit Cross Section<br />ovule<br />Locule<br />Placenta<br />ovary<br />
  17. 17. Literature Cited & References<br />Ait-Ali, T., Frances, S., Weller, J., Reid, J., Kendrick, R. and Kamiya Y. 1999. Regulation of Gibberellin 20-oxidase and Gibberellin 3ᵝ- Hydroxylase Transcript Accumulation during De-Etiolation of Pea Seedlings. Plant Phisiology 122: 783-791<br />Berrios E., P.R. 2009. Personal communication.<br />Cleland, C. and Zeevaart, J. 1970. Gibberellins in Relation to Flowering and Stem Elongation in the Long day Plant Silenearmeria. Plant Phisiology 46(3): 392-400<br />Raven, Evert and Eichhorn. 2005. Biology of Plants. Freeman. New York. pp. 613-614. <br />Riley, J. 1987. Gibberellic Acid for Fruit Set and Seed Germination. CRFG Journal 19: 10-12<br />Talon, M. and Zeevaart, J. 1992. Stem Elongation and Changes in the levels of Gibberellins in Shoots and Tips Induced by Differential Photoperiodic Treatments in the long-day plant Silenearmeria.Planta Journal 188(4): 457-461<br />

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