Effects of Gibberellic Acid on Bean Seeds paper

Effects of Gibberellic Acid on Bean Seeds paper - Biology...

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Biology 212 Lab Section 10 Effects of Gibberellic Acid on Bean Seeds Gibberellic acid is a product of the fungus Gibberellia fujikuroi, which produces plant growth promoting properties (Physiologia Plantarum, Vol. 8 1955). Also, “Regardless of genotype (tall or small plants), more gibberellin, more lateral growth” (Gibberellins and Gibberellic acid). When adding Gibberellic acid (GA) hormone to a seed, it causes a cease in the dormancy process induced by abscisic acid. In addition, the seed will undergo an increase in enzyme production, which breaks down the seed’s food reserves, resulting in cell elongation involved in seedling emergence and more rapid germination (Bio Investigations, 357). There will be several things I will be studying. For example, one thing I will be studying is the growth in the shoot and root apical meristems, caused by the gibberellic acid. The growth in the meristems are happening because of the irreversible increase in cell number, and of course, the plant’s dry mass. This growth is occurring in unspecialized cells, meaning that this is the site of mitosis. After division, these cells become elongated and specialized to perform specific functions. These cells then go on to become a part of a permanent tissue within the plant, which then perform their particular role (Plant Meristems and Growth, Biology Online). This process happens repeatedly for germination processes and growth of the plant! During my experiment I sterilized four large petri dishes with ethanol wipes. Then I inserted a thin piece of paper for water/gibberellic acid absorbtion and placed 6 seeds in each petri dish. In my control dish, I placed 6 seeds with 12 ml of water. In my other three dishes I
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This note was uploaded on 09/14/2011 for the course BIO 212 taught by Professor Mayfield during the Spring '10 term at Iowa State.

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Effects of Gibberellic Acid on Bean Seeds paper - Biology...

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