1. The Effects of Nutrient Levels on a Plant’s Height and Pedicel Length L By: -Erica Weisman -Kevin Armstrong -Lila Brand Schmitz -Hugo Nakashima-Brown

2. Introduction: Brassica rapa / This variation of B. rapa is most often called the Fast Plant / From the Crucifer family / Grows very quickly / Bred by Professor Paul Williams E

3. Introduction: Pedicel / Dictionary Definition: One of the subordinate stalks in a branched inflorescence, bearing a single flower / We chose to study the pedicels because no one had ever measured/studied the affects of nutrients on its length E

4. Purpose / To determine the effect of nutrient levels on the height and pedicel length of Brassica rapa plants / If more Osmocote nutrient pellets are added to the soil, then the pedicels of Brassica rapa plants will be longer E Hypothesis

5. / Independent Variable: / Amount of Nutrients / Dependent Variable: / Plant Height and Pedicel Length / Experimental Group: / All Brassica rapa plants used in experiment / Control Group: / None / Independent Variable: / Amount of Nutrients / Dependent Variable: / Plant Height and Pedicel Length / Experimental Group: / All Brassica rapa plants used in experiment / Control Group: / None L IV, DV, EG, CG

6. Constants  temperature in plant storage area  amount of water  amount of light  dirt:Perlite ratio  soil level/height

7. Apparatus : Pedicel K

8. Apparatus: Growth Bottles K Apparatus: Growth Boxes

9. Methodology / Average pedicel length- mm / Height of each plant to apex- cm / Average pedicel length- mm / Height of each plant to apex- cm L

11. K

14. K

15. Conclusion / Data supported the hypothesis / High nutrients had larger pedicels / Environment>Genetics / P=GxE / Data supported the hypothesis / High nutrients had larger pedicels / Environment>Genetics / P=GxE E

16. Problems / Low nutrient bottle tipped over and spilled / Water spilled out of low nutrient bottle; then the bottle was flooded. / Plant #1 in the high nutrient bottle pulled out of the soil. / Low nutrient bottle tipped over and spilled / Water spilled out of low nutrient bottle; then the bottle was flooded. / Plant #1 in the high nutrient bottle pulled out of the soil. L

17. Possible Improvements / Measuring pedicel number / Use multiple species for experiment / Add a constant/control group / Bigger sample size / Make measurements on same dap / Measuring pedicel number / Use multiple species for experiment / Add a constant/control group / Bigger sample size / Make measurements on same dap L