Comparative Analysis of Germination Processes in Biology

This report presents a comparative study on plant germination, analyzing the effects of three key factors: seed type, soil composition, and watering frequency. The study employed a multifactorial experimental design to assess the impact of these variables on germination rates. The analysis involved graphical representations of the data and the application of ANOVA to determine the significance of each factor and their interactions. The findings indicate that seed type C, in combination with seed raising mix soil and daily watering, yielded the highest germination rates. The study also explores one-way, two-way, and three-way interactions, providing insights into the optimal conditions for plant germination. The report includes detailed tables and statistical analyses to support the conclusions, with references to relevant literature such as Cramer et al. (2016) and Gamst, Meyers, & Guarino (2008). The appendix provides further statistical data through ANOVA tables.

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A Comparative Study of Germination Processes

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Table of Contents
Introduction.....................................................................................................2
Data exploration..............................................................................................2
Hypotheses......................................................................................................5
Inferential Analysis..........................................................................................6
One-Way Interactions...................................................................................6
Two-Way Interactions...................................................................................7
Three- Way Interaction.................................................................................9
Conclusion.....................................................................................................10
References.....................................................................................................10
Appendix........................................................................................................11
Three-Way ANOVA......................................................................................11
Two-Way ANOVA.........................................................................................12
One-Way ANOVA.........................................................................................13

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Introduction
The present exploration tried to estimate the effets of three factors on germinatin of plants. The
study was based on analysis the intreaction and individual effects of the factors of the study.
Analysis of variance was used as the statistical tool to analyse the data of the experiment
(Cramer et al., 2016).
Data exploration
Three factors of the study has been plotted in Figure 1 for exploring the interaction effcet on
germination rates. Seed C with every day watering and Seed Raising Mix soil had the optimum
effect on both germination precossess.
Figure 1: Multifactor (Soil, Watering, Seeds) Effect on Percentage Germination of Plants

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Two way interactions were plotted in Figure 2 and Figure 3. Seed C with every day watering has
the most positive effect on germination rate of the plants (Figure 2). Combination of seed C and
Seed Raising Mix soil was the best composition for percentage germination rates (Figure 3).
Figure 2: Effect of Seed Type and Watering Frequency on Germination Rate
Figure 3: Effect of Soil Type and Seed Type on Germination Rate

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One way effects were studied, and have been provided in Figure 4 – Figure 6. Independent study
on seed type revealed that seed C was the most effective for germination. Everyday watering was
seemed to be more effective than watering plants every 3 days. Seed Raising Mix was found as
the most effective treatment for germination.
Figure 4: Effect of Seed Type on Germination Rate
Figure 5: Effect of Watering Frequency on Germination Rate

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Figure 6: Effect of Soil Type on Germination Rate
Hypotheses
One-way
HO1: Soil variants did not have significant difference in impact on germination.
HO2: Seed variants did not have significant difference in impact on germination.
HO3: Watering variants did not have significant difference in impact on germination.
Two-Way
HT1: Interaction of Soil and Seed variants did not have significant difference in impact on
germination.
HT2: Interaction of Soil and Watering variants did not have significant difference in impact on
germination.
HT3: Interaction of Seed and Watering variants did not have significant difference in impact on
germination.
Three-Way
H0: Interaction of Soil, Seed, and Watering variants did not have significant difference in impact
on germination.

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Inferential Analysis
One-Way Interactions
For investigating the effect of the independent factors on germination rates ANOVA was
conducted. The ANOVA was conducted for one-way, two-way, and three way interaction (s). In
one-way analysis for seeds, the C variant was found to be the most effective of all (F = 23.52,
p < 0.05). Hence, HO1 was rejected based on the evidences.
Table 1: Seed Estimate for Germination Rate
SEED Mean Std.
Error
95% Confidence
Interval
Lower
Bound
Upper
Bound
A 53.75 3.54 46.33 61.17
B 76.25 3.54 68.83 83.67
C 87.50 3.54 80.08 94.92
In one-way analysis for soils, Seed Raising Mix has significantly different effect on
germination rate as the most effective treatment (F = 10.62, p < 0.05). Hence, HO2 was
rejected based on the evidences.
Table 2: Soil Estimate for Germination Rates
Soil Mean Std.
Error
95% Confidence
Interval
Lower
Bound
Upper
Bound
Garden Soil 65.83 2.89 59.78 71.89
Seed Raising Mix 79.17 2.89 73.11 85.22

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In one-way analysis for watering, none of variants was found as the most effective treatment
for germination (F = 1.49, p = 0.24). Hence, HO3 failed to get rejected based on the evidences.
Table 3: Watering Estimate for Germination Rate
Watering Mean Std.
Error
95% Confidence
Interval
Lower
Bound
Upper
Bound
Water Every 3rd Day 70.00 2.89 63.94 76.06
Water Every Day 75.00 2.89 68.94 81.06
Two-Way Interactions
Interaction between soil and seed yielded significant effect on the model (F = 10.53, p < 0.05),
with combination of seed C and Seed Raising Mix soil as the most effective way for
germination. Hence, HT1 was rejected based on the evidences.
Table 4: Interaction of Soil and Seed Types
SEED Mean Std.
Error
A Garden Soil 45.00 5.27
Seed Raising
Mix 62.50 5.27
B Garden Soil 70.00 5.27
Seed Raising
Mix 82.50 5.27
C Garden Soil 82.50 5.27
Seed Raising
Mix 92.50 5.27

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Interaction between soil and watering variants did not revealed significant difference in
effect on the model (F = 1.55, p = 0.23), though combination of Water Every Day and Seed
Raising Mix soil was observed as the most effective way for germination (M = 85.00%). Hence,
HT2 failed to get rejected based on the evidences.
Table 5: Interaction of Soil and Watering Types
Soil Mean Std.
Error
Garden Soil Water Every 3rd
Day 66.67 7.28
Water Every
Day 65.00 7.28
Seed Raising Mix Water Every 3rd
Day 73.33 7.28
Water Every
Day 85.00 7.28
Interaction between seed and watering variants revealed significant effect on the model (F =
6.49, p < 0.05), and combination of Water Every Day and seed C was the most effective way
for germination (M = 92.50%). Hence, HT3 was rejected based on the evidences.
Table 6: Interaction of Seed and Watering Types
SEED Mean Std.
Error
A Water Every 3rd
Day 55.00 6.24
Water Every Day 52.50 6.24
B Water Every 3rd
Day 72.50 6.24
Water Every Day 80.00 6.24
C Water Every 3rd
Day 82.50 6.24
Water Every Day 92.50 6.24

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Three- Way Interaction
A three way interaction of the factors was evaluated in ANOVA, and significant difference in
between subject effects was found (F = 5.03, p < 0.05). The most effective treatment was
observed as C type seed implanted in Seed Raising Mix with every day watering. Null
hypothesis H0 was rejected based on the evidences.
Table 7: Interaction of Soil, Seed and Watering Types
Soil Watering Seed Mean Std.
Error
Garden Soil Water Every 3rd Day A 50.00 7.64
B 70.00 7.64
C 80.00 7.64
Water Every Day A 40.00 7.64
B 70.00 7.64
C 85.00 7.64
Seed Raising Mix Water Every 3rd Day A 60.00 7.64
B 75.00 7.64
C 85.00 7.64
Water Every Day A 65.00 7.64
B 90.00 7.64
C 100.00 7.64
Conclusion
Best technique was found as the combination of seed-C, soil-Seed Raising Mix, and watering-
Water Every Day. On individual basis, the most effective seed was the C variant, and most
successful soil type was Seed Raising Soil with no watering variant as the most efficient
watering method for high percentage of germination of the plants under the current experiment.
From the entire analysis C type seeds and Seed Raising Soil were better options for high
percentage of germination, though there was not clear indication in difference of effectiveness in
watering systems (Gamst, Meyers, & Guarino, 2008).

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References
Cramer, A. O., van Ravenzwaaij, D., Matzke, D., Steingroever, H., Wetzels, R., Grasman, R.
P., ... & Wagenmakers, E. J. (2016). Hidden multiplicity in exploratory multiway
ANOVA: Prevalence and remedies. Psychonomic Bulletin & Review, 23(2), 640-647.
Gamst, G., Meyers, L. S., & Guarino, A. J. (2008). Analysis of variance designs: A conceptual
and computational approach with SPSS and SAS. Cambridge University Press.

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Appendix
Three-Way ANOVA