Allelopathy Between Cucumber Seeds and Eucalyptus Oil
Allelopathy is an interaction between plants. It produces toxins which
attack target plants, thereby inhibiting their growth and germination.
The example of this which I am investigating is that between cucumber
seeds and eucalyptus oil.
A suitable method for investigating the above is described in the
literature. I am going to prepare a Petri dish with a cotton wool pad
soaked in water. I will thoroughly wet the cotton wool pad and then
turn the Petri dish upside down so that any excess water drips off. I
will drip the eucalyptus oil into a small beaker which I will stand on
the lid of the Petri dish, beside the Petri dish in a polythene bag. I
will partially inflate the bag. It will be in a polythene bag so that
the vapour cannot escape and to stop the cotton wool from drying out.
The variable which I will change will be the concentration of
eucalyptus oil. I am going to do a preliminary experiment. I will,
from this, decide on appropriate concentrations for the main
experiment. I will control all the other variables: the cotton wool
pads will have approximately the same amount of water, the bags will
all be kept close together in the same place for the same time: the
temperature will therefore be the same for all of them. I will get all
the seeds from the same source and use the same number for all the
tests
I predict, from the information in the literature, that the eucalyptus
oil will inhibit the growth of the cucumber seeds. I also predict that
the larger the concentration is, the shorter the hypocotyl will be.
For my preliminary test, I did the following concentrations of
eucalyptus oil: 0, 8 and 15 drops. I put 10 seeds in each Petri dish.
I used I got the following results:
The results from my preliminary experiment go against the literature
and my predictions, because they suggest that eucalyptus oil increases
growth and germination. I predict that this will not be the case when
There are different types of oils, 10W30, 5W30, and 10W40 are the most common. 10W30 is the most versatile oil out of them all.
A man has an incurable chronic illness and receives 8 blood transfusions, and is told that he will have to have huge sections of his intestines removed if he doesn 't not improve, and only after consuming some seed oils he actually feels healthier than he did before he got sick. Sounds like something out of a fiction novel, but it is an actual story of an Olympian! Is a certain combination of seed oils actually that beneficial for health? This PanaSeeda Five Seed Oil Blend review will take a look at a specific combination that helped a man go from death bed to pure health.
To continue this experiment further, I could use frozen chopped spinach leaves, or substitute the rubbing alcohol for methyl alcohol.
To carry out the experiment starch-agar Petri dishes are needed. Gloves must be worn to prevent contamination of the Petri dishes and so not to hinder the results.
packaging that could be thrown after its use. This drastically eliminated the time and water
brown paper carrier bag it was in!) It was all made out to be rather
Chamomile, eucalyptus, frankincense, Scots pine and rose otto can help. Put 6 drops of your chosen oil (except eucalyptus) in the bath and/or a burner, or on a tissue and inhale as required. Make up a massage oil using up to 10 drops essential oil in 25ml base oil and massage into the chest and back, 2-3 times a day. Bibliography CGP GCSE Double Science Biology. The revision guide.
bottom of the tube. Next a cotton ball is placed in each of the two test tubes
1.) Gas Syringe 100cm³ - I chose this as it is easy to measure the
Chapter 5 - What Are The Common Essential Oils And What Are They Used For
These oils, referred to as essential oils, are the basic materials used in aromatherapy and are taken from parts of the plant such as the root, stalk, flowers, leaves, bark, or rind. "Each type of essential oil has a different chemical composition that affects how it smells, how it is absorbed, and how it is used by the body" (NIH). Once the plants oils are extracted, they may either be distilled with steam and/or water or mechanically pressed. Oils that are made from chemical processes are not considered to be pure essential oils and therefore their benefits will not be the same as using a pure essential oil. Pure essential oils are extremely concentrated. For instance, according to AuraCacia, a main distributor of pure essential oils, "It takes 150 pounds of lavender flowers to produce just one pound of lavender essential
piece of potato. This was put in a test tube along with a piece of the
ha! i like the sandbox!... ... middle of paper ... ...
Add 5 g crushed nutmeg and 50 mL hexane-isopropanol into a flask and warm for 15 minutes.