Acid Concentrations And The Germination Rate Of The Seeds Essays

Acid Concentrations And The Germination Rate Of The Seeds Essays

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From concentrations of 0 ppm to 2500ppm, there is a clear trend created between the gibberellic acid (GA3) concentrations and the germination rate of the seeds. With the exception of the 1000ppm data point, as the seeds were exposed to water with higher gibberellic acid concentrations (up to 2500ppm), they showed a reduction in the time taken for a visible seedling to break the surface coating of the seeds. This overall trend confirmed the first aspect of the hypothesis, which stated that increasing gibberellic acid concentrations would lead to faster germination rates. However, the hypothesis also mentioned that the time taken to germinate would eventually form a “plateau” or remain the same after a given concentration. This contradicts the data that shows a significant increase in the time taken to germinate when the seeds were exposed to concentrations of 3000 and 3500 ppm. Furthermore, with the highest concentration of GA3, the germination of three seeds was completely inhibited as they became shrivelled and were unable to germinate within the 10 days. Qualitatively, after germination, the plant’s plumules followed a similar trend, as their rate of elongation was maximized at the 2500ppm concentration.

Conclusion:
To conclude, the limitations of the data and its contradiction with the hypothesis need to be explained to gain a better understanding of the properties of GA3 and its potential applications in agriculture.

In terms of the contradiction, there are various reasons that could have led to increases in germination times rather than the formation of a plateau past the 2500ppm concentration. As previously mentioned, the GA3 that is produced in the embryo serves as a hormonal signal to the aleurone layer. For the signal t...


... middle of paper ...


...l be able to check the footage and find a more precise and reliable representation of the time taken for the emergence of the seedling, with a smaller uncertainty value.

Extensions:

There are other ways in which the hormonal influence on the germination of seeds can be investigated. One way is by examining the optimal GA3 concentrations required by seeds in various temperatures and climates. As a seed’s temperature changes, there will be an unquestionable change in its internal chemistry, which could lead to different required concentrations of hormones. Alternative investigations could include the effect of other hormones such as Abscisic acid and Ethylene on germination rates. Once all their effects have been deduced, the hormone that is the most practical and beneficial to increasing crop output could be mass-produced and used globally in agricultural practices.

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