Picea Mariana Seeds Case Study

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Germination is the transition from mature embryos to an actual plant containing both a root and a shoot. This involves having a visible root and shoot as well as cotyledon elongation. (Attree 1990) Once the seed germinates, both a root and a shoot forms, and the seed capsule is pushed up, out of the dirt by the stem before it falls off. The different treatments used in this study affected the overall germination of the Picea mariana seeds. The seeds which were only treated with distilled water germinated as they were expected to germinate. The seeds that were treated with the Kalmia extract tended to have roots which were much shorter than the shoots. The same thing occurred with the seeds that were grown in the soil that Kalmia grew in, as …show more content…
That is, moist environments with a neutral pH. There were no nutrients present in the water, or on the filter paper and the seeds germinated normally as they do not need nutrients to germinate, just water. (Attree 1990)
The seeds treated with the Kalmia extract had very little root growth compared to shoot growth. That is because Kalmia is an allelopathic plant and the germinates reacted to the chemical compounds that were present in the extract. The same thing occurred with the organic matter for the same reason, the Kalmia likely leached allelopathic compounds in the soil which the seeds reacted to. (Inderjit 2002)
The seeds which germinated in the solution with a pH of 3.5 reacted in much of the same way as the seeds influenced by the allelopathic compounds in both the Kalmia extract as well as the Kalmia soil. This is likely because the pH of the solution was too acidic for proper root growth. (Attree
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This is because the data was not exactly parametric due to all the outliers. The parametric tests done with this data resulted in values which were unacceptable for further analysis. Therefore, none parametric tests were conducted and these tests all yielded acceptable values.
In real life, Kalmia angustifolia has a greater affect on the root growth of Picea mariana, than it does on shoot growth (Zhu 1994). This is reflected in my results since there seems to be minor difference in the shoot growth between each treatment, but there is a major difference in root growth. The roots in treatments 2, 3 and 4 are all considerably shorter than the roots in treatment 1. There is also slight difference in seed germination between the four treatments.
Contamination of the Picea mariana seeds with molds had a huge effect on the growth of the germinants. If the seeds were contaminated, then they were not counted in the measurements of the roos or the shoots. The molds contaminated the seeds, because after the first day, the seeds were not properly handled. To prevent contamination, the seeds should always be handled with gloves. It is recommended for further studies, that whomever is counting the seeds should wear gloves to prevent

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