Allelopathy Affects Germination of Radish Seeds Essay

1021 Words Sep 27th, 2008 5 Pages
Introduction This experiment is designed to test the allelopathy of two different treatments, Eucalyptus (Eucalyptus cinerea) and Lemon (Citrus limon). The two treatments will be tested on radish seeds (Raphanus sativus) to investigate the effect of the treatments on the germination of the radish seeds. Allelopathy is the beneficial or harmful effects that one plant has on another plant by the release of chemicals. Allelopathy studies the interactions among plants, fungi, algae and bacteria with the organisms living in a certain ecosystem, interactions that are mediated by the secondary metabolites produced and exuded into the environment (Francisco A Macías, José MG Molinillo, Rosa M Varela, Juan CG Galindo 2007). The plants use …show more content…
The data shows clearly the differences in these percentages.

Discussion My findings were great. They showed the effects that a control, Eucalyptus, and Lemon had on the germination of Radish seeds. This experiment can also be used to help explain allelopathy. In the Chart above, it shows that the control allowed the most seeds to germinate, as well as the Eucalyptus allowed no seeds to germinate. The Graph above shows that the control were able to survive and grow the most, while the Lemon allowed a little growth, and the Eucalyptus allowed no growth at all. By these findings, it is safe to say that Lemons and Eucalyptus are allelopathic plants because they both had effect on the germination and growth of the Radish seeds. I also found that our result were very similar to the rest of the groups. Our nine seeds that germinated was very close to the average of the class of 9.4. The rest of our results were similar to the class averages as well. This was very good. It helped to prove the point that the same thing will happen over and over. In conclusion, I found that the Lemon and Eucalyptus are both allelopathic plants and that Eucalyptus had much more of an impact to the Radish seeds. My hypothesis was correct. Eucalyptus did not let a single Radish seed germinate or grow. The Lemon had an impact on the growth and germination of the Radish seeds also.

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