Hi, need to submit a 3500 words paper on the topic Measuring Allelolapathy in Plants. Using a 50 petry dish with a layer of paper, 10 radish seeds were placed in each of the Petry dishes. 25 grams of Ailanthus altissima was placed in a blender combined with 250 ml of water and blended for a period of five minutes followed by filtering the solution that resulted through various layers of cheesecloth. 6 ml of the solution was added to 10 of the petry dishes that contain the radish seeds. Following a series of procedures, the number of seeds in each of the dishes having germinated was counted. The length of each root was measured to the nearest tenth of a cm using a ruler. After germination of the seed, the root length was counted as zero. Results indicated that the extract of A. altissima significantly inhibits the germination of test species, as well as inhibit root growth. Moreover, results indicate that the pH values of the aqueous extracts affect germination rates and root growth. By and large, the strength of inhibition is closely related to the concentration of the extracts and/or the pH. In conclusion, altissimo significantly inhibits the germination of test species, as well as inhibit root growth. It is also clear that the pH values of the aqueous extracts affect germination rates and root growth.
The term allelopathy is used to refer to chemical inhibition of one species by another species (Duke et al. 2001). The inhibitory chemical is often released to the environment causing a negative effect on the growth and development of the neighboring plants (Gaudet, 2006). Allelopathic chemicals can be found in parts of the plants (Feeny, 2002). The parts are flowers, leaves, stems or fruits, as well as in the soils that surround the plant (Garrity, 2003). Neighboring species may be affected by the toxins in a variety of ways. Also, toxic chemicals can inhibit the root or shoot growth in root to prevent nutrient uptake (Christensen, 2001). .
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