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The Effects of Freezing on Vegetable Seeds

The Effects of Freezing on Vegetable Seeds. Natalie Mang 9 th Grade. Problem. Will vegetable seeds germinate after being frozen for various times at the same temperature? Chose to do this experiment because…. Research. Vegetable seeds germinate like all other types seeds.

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The Effects of Freezing on Vegetable Seeds

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  1. The Effects of Freezing on Vegetable Seeds Natalie Mang 9th Grade

  2. Problem • Will vegetable seeds germinate after being frozen for various times at the same temperature? • Chose to do this experiment because…

  3. Research • Vegetable seeds germinate like all other types seeds. • Seed absorbs water & activates an enzyme. • Respiration occurs & seed coat opens, allowing the first signs of germination. • Different variables can affect the germination rate of seeds. • Light, temperature, moisture, etc.

  4. Hypothesis • If the vegetable seeds are frozen for various times than they will take longer to germinate than those that were not frozen.

  5. Materials • Carrot, Pea & Bean seeds. • Soil – Agway Seed Starter Mix • Small germination pots • Natural sunlight • Water • Freezer

  6. Procedure • Carrot, Pea and Bean seeds divided into four groups: No freezing, 24 hour, 48 hour and 7 day. • Placed in the freezer the 24 hour, 48 hour and 7 day. • Planted the no freezing seeds. • After being in the freezer for 24 hours planted the seeds. • Repeated with 48 hour and 7 day. • Recorded times of when and how many seeds germinated for two weeks after the no freezing seeds were planted.

  7. Data • First graph- Effect of different temperatures. • Second graph- Ability to germinate • ANOVA testing • P Value- 9.98571E-05 • Shows significant difference in germination • P Value- 0.936559291 • Shows no significant difference in freezing

  8. Conclusion • Hypothesis (was not supported)- If the vegetable seeds are frozen for various times than they will take longer to germinate than those that were not frozen. • Was not supported because there was no difference in the length of time it took the seeds to germinate. • Those that were frozen grew at the same rate of those that were not frozen. • Improvements & advancements • Freeze the seeds for a longer period of time. • Use different types of seeds; not necessarily vegetable. • Record the exact number of seeds that were planted for each time & type of seed.

  9. Thanks "Comparison of Germination Rates for Frozen Seeds and Follow-Up." Experiments in Sequoia Seed Germination IV. N.p., n.d. Web. 15 Oct. 2009.      <http://trees.martinsvillenj.com/sequoiaseeds4.htm>. Greulach, Victor A. Plant Function and Structure. New York: Macmillan Publishing      Co. Inc, 1973. Print. Harb, Rami J. "CALIFORNIA STATE SCIENCE FAIR." USC. N.p., 2 Apr. 2005. Web. 15      Oct. 2009. <http://www.usc.edu/CSSF/History/2005/Projects/J1620.pdf>. Miller, Kenneth R., and Joseph Levine. Biology. Upper Saddle River, New Jersey:      Pearson Education Inc., 2006. Print. Reader's Digest Illustrated Guide to Gardening. London: The Reader's Digest      Association Limited, 1975. Print. • Thank you everyone here today for listening and if you have any questions feel free to ask.

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