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Agar Composition on Root Growth
Aaron SeiglerJames Skinner
Matt Boggs
HypothesisThe greater the density of an agar
solution that Arabidopsis thaliana (Columbia) seeds are cultivated in, the longer the roots.
Measured How and When?The Arabidopsis was scanned on the
computer twice. Once for every week.They were then put into the computer
software Image J.Next, they were measured by all three
experimenters.These numbers were then averaged and put
into one measurement.Dr. Ab then helped us with the stats part of
the experiment and helped us find the P value.
Summary of FindingsThe most dense agar composition of 1.6%
had the longest root growth, followed by the 0.4% agar, and last was the 0.8% agar.
The P value found supported our findings.The more dense the agar the longer the root
growth was, which this was previously not believed.
What does it all mean?This shows the more dense the agar the
better the roots will grow.The density of the agar does not inhibit the
root growth of Arabidopsis plants.The more dense the agar solution the greater
amount of nutrients the plant received and therefore grew longer.
Supported or Not?The greater the density of an agar
solution that Arabidopsis thaliana (Columbia) seeds are cultivated in, the longer the roots.
The P value found while doing the stat work with Dr. Ab proved to give us the support our hypothesis needed.
Also the more dense agar concentration of 1.6% had the longest roots.
Do it Again?We would take light out of the formula
because the plates on the outside had the longer roots. We would cover them with heavy construction paper so light could only get in from the top.
Also we would be careful with the less dense agar concentrations so it doesn’t turn to water and wash away our plants.
How dense can the agar concentration be before the roots can’t grow down into it?