Giberellin Lab PDF

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Giberellin Lab...

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Akanksha Chouhan

Introduction Gibberellin aids a plant’s growth. This experiment was conducted to observe and understand if dwarf sized plants naturally lack gibberellin or have mutated receptors of different amounts of gibberellin. The dwarf and normal pea plants were kept over a one week time period, at the end of which, the group concluded that the dwarf plants had higher growth averages compared to the normal sized plants. Materials/Methods A box of normal sized and dwarf sized pea plants was obtained. 24 dwarf plants and 24 normal sized plants were utilized for the study. There were four rows of six plants for each type. The distance from the apical stem to the soil was measured in centimeters, using the ruler. One row of each type of plant was treated with water and the rest of the three rows were treated with different concentrations of gibberellin. The concentrations of gibberellin placed in the second third and fourth rows were 0.1 mg/L, 10 mg/L, and 100 mg/L, respectively. Afterwards, one week was given to allow growth. Once the initial and final growth lengths were observed and recorded, the average was calculated. Results The averages of the lengths were calculated by taking the difference between the final and initial lengths of the plants. The group with the normal plants had a significantly higher growth average when compared to the dwarf sized plants. Moreover, the individual group averages and the class averages both proved that all plants treated

with gibberellin had more growth than those treated with water. The data and results are listed below. Table One: Initial Dwarf Measurements (cm) 0 mg/L

0.1 mg/L

10 mg/L

100 mg/L

1.5

0

1

0

1.3

1

1

3.2

0

0

1.5

4

0

0

2.5

1

1.8

4

2.5

3

0

2.5

1

3

Table Two: Initial Normal Sized Plants Measurements (cm) 0 mg/L

0.1 mg/L

10 mg/L

100 mg/L

0

12

1

6

6.5

0

10

11

1.5

13

3.0

2

12

10

8.5

0

10.9

1.5

6.5

9

8.9

10

2.5

10.5...