Lab II Report - Lauren Allen March 26, 2007 Dr. Tom...

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Lauren Allen March 26, 2007 Dr. Tom Seiflein Territorial Behaviors by Conifers Using Allelochemicals
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HYPOTHESES Hypothesis for the Rye Seeds : When rye seeds are watered daily for 7 days with one of three conifer leachates or water there will be a significant difference between the observed and expected number of seeds germinated (not rate). Null Hypothesis for the Rye Seeds : There will be no significant difference between the number of seeds germinated in the conifer extract “observed” and the control (water) dishes, the “Expected.” Hypothesis for the Radish Seeds : When compared to the mean radicle length in the control (water), the mean radicle length of radish seeds will decrease when exposed to allelochemicals from conifers. Null Hypothesis for the Radish Seeds : There will be no significant difference between the mean radicle length or radish seeds in the control (water) and the mean radicle length from the 3 conifer treatment groups: control and leachate treated . RESULTS Table 1: The Number of Rye Seeds Germinated Versus Not Germinated in Water (Control), Arborvitae Leachate, Mugo Pine Leachate, and White Pine Leachate for both Class and Group Data Tables 2a, 2b, 2c: Table 2a: A Chi Square Evaluation of the Results of the Number of Rye Seeds that Germinated Versus Not Germinated in White Pine Leachate
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Using the Observed Number of Seeds Germinated and the Expected Number of Seeds Germinated (one degree of freedom) p <.001 and therefore we reject the null hypothesis; this occurrence is due to something beyond chance and the results are statistically significant. 3.84 is the critical value and it is much greater than that. Table 2b: A Chi Square Evaluation of the Results of the Number of Rye Seeds that Germinated Versus Not Germinated in Mugo Pine Leachate Using the Observed Number of Seeds Germinated and the Expected Number of Seeds Germinated (one degree of freedom) p <.001 and therefore we reject the null hypothesis; this occurrence is due to something beyond chance and the results are statistically significant. 3.84 is the critical value and it is much greater than that. Table 2c: A Chi Square Evaluation of the Results of the Number of Rye
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This note was uploaded on 04/14/2008 for the course BIOSCI 0060 taught by Professor Ruthermund during the Spring '08 term at Pittsburgh.

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Lab II Report - Lauren Allen March 26, 2007 Dr. Tom...

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