Problem:
Does the allelopathy of garlic have influence on the germination of radish seed products?
Research:
Some animals, plants, fungi, and bacterias produce what's called an allelopathy. That is a biological chemical that impacts the progress of some vegetation in positive and negative ways (Wikipedia). The biochemicals that are produced aren't important to the metabolism of the vegetation, rendering it the explanation for the positive or negative effects. These are "secondary metabolites". Allelopathy has been discovered a very long ago in 300 B. C. by a guy known as Theophrastus. However at that time he did not really know what exactly he was dealing with, he just figured out that chickpeas got the energy to "exhaust" earth and destroy weeds (Cornell). Generally allelopathy is considered to be always a "competition substance" which really is a basically a chemical used by plants against other crops. The chemicals Secreted are growth or germination inhibitors that are being used to avoid another seed from growing (Michael Allaby). The reason behind such harshness is the fact that eliminating other crops leaves more resources for the plant life that survive and therefor allow them to sustain life even further.
Hypothesis:
After the study and reading that I have done I've reason to think that allelopathy of garlic clove does have an effect on the germination of radish seeds. I believe it would have a negative effect on the germination of radish seed products, preventing them from germinating.
Materials:
- Round plastic see-through pots.
- Round little bit of special tissues.
- Radish Seeds.
- Crushed Garlic.
- Crushed Carrot.
- Tinfoil.
- Water.
- Tape
Method:
The way we setup the experiment was first we grabbed four see-through plastic containers that would contain most of the parts. Each pot received a round little bit of special tissue in the bottom in order to hold the for the seeds. The same amount of 20 radish seeds were put into each container leaving room in the middle in both out of the four containers. In another of the containers we smashed garlic and put it into tinfoil open up from the most notable right into the center of the pot. The other box received smashed carrot in tinfoil exposed from the top straight into the middle. Two of the containers were used as a control group and were not given carrot or garlic clove. All the four pots received an similarly measured eight milliliters of water. The top lid on the storage containers was shut down and tape was put on the sides to prevent any destruction or damage.
Observations:
The designated observation process was fourteen days. Each day except Friday, Saturday, and Sunday the pots were examined for germination activity. Exactly weekly after set-up the pots received another eight milliliters of normal water each, as this had appeared to be drying up. Every day the data was documented and documented. The info saved was such as amount of seed products that germinated, amount of the root base, leaves, and stems, as well as the colour of the leaves, and origins.
Nuisance Factors:
The nuisance parameters such as heat range, water, and light were retained frequent by keeping all the pots in the same exact environment. They received the same exact amount of light credited to them being right next to each other. The quantity of normal water was the same because we assessed and added the same amount to each container. Temps was constant as well because once more they were situated in the same area, where the heat range couldn't change.
Results
Graphs:
Graph number one shows our first control group, consisting of just radish. As you can plainly see almost all the seeds have germinated. The stems and leaves produced were inexperienced and were about half an in. long.
Graph number two showed very similar leads to graph number 1, in simple fact almost identical. The amount of seed products germinated only assorted by one, which might have been caused by seed health or position. Other factors were the same. Seed products and stems were also about half an inch long and a healthy green color.
Graph number 3 shows our first and main test group, the result is clearly visible on the graph. The seed products that were located in the same box as garlic experienced a considerably less germination rate than the two control groupings. Also the leaves and stems of the radish were not inexperienced and healthy. The stems and leaves seemed rather inactive as these were a pale white color; as well the size was half of the control group.
Graph number four shows our last test group. In cases like this we had position the radish in the box with crushed carrot. According to the results the carrot acquired similar influence on the radish similar to the garlic did. The amount of seed products germinated was considerably less. The stems and leaves were smaller and revealed an extremely faint color of green.
Summary:
After the test had finished and the data was gathered and analyzed it was clear garlic and carrot as well got a great influence on the radish seeds. The seeds which were put in the same container as the garlic and carrot got a significantly lower germination rate and speed. The colour of the stems and leaves, as well as size, that both test groupings produced was a lot more faint and the size was about half of the control groups.
Discussion
Conclusion:
In final result we can say that the experiment was a successful one on the basis of our results. We have analyzed and collected data over the bi weekly period. The experiment was set up properly as it experienced every one of the following necessities such as a control group, test groupings, as well as the nuisance parameters being maintained the complete time of the test. The hypothesis that was stated in the beginning was proven to be correct as we have learned that allelopathy of garlic indeed has an effect on the germination of radish seeds. The effect it has is negative, as it offers the biochemicals that inhibit the germination and expansion of radish.
Bibliography
- MICHAEL ALLABY. "allelopathy. " A Dictionary of Ecology. 2004. Encyclopedia. com. 1 Feb. 2010 http://www. encyclopedia. com.
- "Allelopathy -. " Wikipedia, the free encyclopedia. Web. 01 Feb. 2010. http://en. wikipedia. org/wiki/Allelopathy.
- "Allelopathy. " CSIP College student Inquiry Tasks - home. Web. 02 Feb. 2010. http://csip. cornell. edu/Projects/CEIRP/AR/Allelopathy. htm.
- "[Allelopathy of garlic main exudates on different. . . [Ying Yong Sheng Tai Xue Bao. 2007] - PubMed end result. " National Center for Biotechnology Information. Web. 02 Feb. 2010. http://www. ncbi. nlm. nih. gov/pubmed/17396504.
