Title: The Effects of Freezing on Germination Rate
Introduction:
The purpose of this experiment was to discover which species out of three seeds would have the germination rate be the most negatively affected after being frozen for several days. Seed banks store frozen seeds which implied that freezing seeds doesn’t cause any major damage to the seeds. However, some species of seeds would probably be more resistant to being frozen than others. Seeds are native to and are grown in many different types of environments some of which are much warmer and colder than others so there seemed to be a possibility that plants from colder environments would produce seeds less susceptible to damage from low temperatures.
Experimental Question: How does
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The average number of bean seeds that sprouted in the control groups was 1.5 and the average number that sprouted in the freezer groups was 3. Overall, the beans had the lowest germination rate out of all three species. In all of the groups of squash seeds except for the freezer group in trial 1, 6 seeds sprouted. The freezer group in trial 1 had 7 seeds that sprouted. The average number of seeds that germinated in the squash control groups was 6 and in the freezer groups the average was 6.5. Overall, the squash seeds had the highest germination rate. The pea seeds had the most variation in the number of seeds that germinated. In trial 1, 3 seeds germinated in the control group and 4 seeds germinated in the freezer group, 133.3% more than the control. In trial 2, the control group had five seeds that germinated, 3 more than the two that germinated in the freezer group which had only 40% as many seeds as the control. On average, 4 seeds sprouted in the control groups and 3 seeds sprouted in the freezer …show more content…
There were also procedural problems including imprecise measurement of the water at the beginning of the setup, inconsistent seed placement on the paper towels and irregular times at which the seeds were observed and watered. Also, the seeds were placed very close together which resulted in roots growing over into other paper towels and the faster spread of mold. This mold, which began growing on some of the seeds within a few days, was a major factor. Because the mold began to spread to other seeds and because none of the seeds sprouted after mold had grown, the moldy seeds probably should have been removed. There were also a couple breaks in the pattern of observing and watering the seeds
All five groups recorded the outcomes that they established. For our bench, we found that nine raddish seeds in the control dish, zero raddish seeds in the eucalyptus dish, and four radish seeds in the lemon dish germinated and sprouted. Our bench also found that the average seed length for the control was thirty one millimeters, for the Eucalyptus was zero. and for the Lemon was eight and a half. Below, is a chart and graph that shows the whole data as averages from all five benches. Each bench did the exact same experiment so we knew nothing would be biased.
The experiment was begun by obtaining four 8 oz. Styrofoam cups and punching a hole through the bottom of them. This hole was for water entry or excess water drainage. Moistened soil was packed to the 1/2 full line in the cup along with 3 fertilizer pellets The cups were labeled the following: Rosette-H20, Rosette-GA, Wild-Type-H2O, and Wild-type- GA.(Handout 1) A small wooden applicator stick was obtained a moistened at the tip with water from the petri dish labeled ‘water.’ This was to be able to attract the seed to the applicator in order to place the seed from its original container into
Before, I started I made a prediction for the experiment. I thought the salt on top of the seed and inside the paper towel would soak up water and dehydrate the seed and make the paper towel go dryer
When planting a seed, many factors allow the seed to grow and become a plant. To sprout from the ground, and to survive, seeds need water, air, and a certain temperature. Seeds can get water, oxygen, and sun by being placed at the proper planting depth. Planting depth is the depth at which a seed is placed in the soil. If a seed is exposed to these important needs, it goes through a process called germination. According to the Wise Geek article, “What is Germination?”, “Germination is a process in which a seed or spore awakens from dormancy and starts to sprout.” (“What is Germination?”).
There are many ways to obtain seeds to grow flowers in the springtime, but not all seeds were created equal. Sunflower seeds, for example, can be bought at a garden store in a packet for $1.5 dollars per 6 gram packet, but they can also be found in bird seed for $3.53 dollars per 10 pounds. This experiment intends to find if the germination of a store bought packet of sunflower seeds matches the germination rate of sunflower seeds obtained from a bag of bird seed. While both seeds will germinate, it is believed that the bird seed will not be as robust in growth as the garden seed, due to the fact that the garden seed is made to be grown, while the bird seed is made for consumption.
The results observed do not correspond with the outcome predicted by the hypothesis. Despite the nature of the subjects of the experiments, no substantial growth was observed. Only one seed of the 36 planted germinated, and it could only survive for a period of a week. The one seed that germinated reach a height of 1.2 cm. Table 1 presents the average growth observed in each quad. Each quad had a total of 12 seeds. No seeds were removed during the course of the experiment.
After finishing the entire lab experiment, I find that those were the only big problems I had. If I were to improve this experiment, though, I would find a good window ledge, buy a tape measure and have a better object to block the experimental seeds from the sun. Other than these factors, I feel this lab went very successfully and that the results were reasonably accurate.
This experiment began on the first day of lab by planting 12 total seeds from the F1 generation in six individual cells. Potting soil was added until each cell was a little
METHODS/PROCEDURES: In the beginning of the experiment, pea seeds were used in order to perform the experiment. It was extremely important to acquire good, dry, and viable seeds so the process of germination could occur. A handful of these healthy seeds worked best in assisting the experiment. The seeds ability to germinate was a vital information needed to determine the outcome of the experiment.
The garden bean and castor bean are considered to be epigeous because during germination the cotyledons are carried above ground level by the extending hypocotyl. In both bean seedlings, the extended hypocotyl shapes into a hook, but eventually straightens out pulling the cotyledon above the ground. In contrast to the garden and castor bean, the germination process of the pea is considered to be hypogeous. In this process, the cotyledons remain under the surface and the hypocotyl doesn’t extend. During hypogeous germination of the pea seedling, the epicotyl extends and forms a hook, which eventually lifts the plumule from underground as it straightens out.
Take a clean paper towel or coffee filter. Moisten it. Place 10 or 20 seeds onto it (10 is better). Fold the seeds. If you use exactly ten seeds, you will find it much better to calculate the percentage of germination after that. Here is why. If 5 out of 10 seeds germinate, then 50% of your seeds will grow during the season. That's pretty risky. So you need more than 70% or else planting will not be worth the effort. Ideally, 8 or 9 out of 10 seeds will sprout. However, if you get less than 70%, you had better not put work into it at all. Buy new seeds for the upcoming planting season.
2. The recommended numbers of peas for use in this experiment are 10–15 peas for the original
Seed containers hold on trees until in any event the accompanying Summer. There are around 300 suitable seeds for every gram; seeds begin to develop in around 7 days if developed at 25°C with no pretreatment required (Mana gums, Peter McIntyre 2000)
Of the four soils tested, Vigoro and Miracle-Gro were the only two which indicated a Phosphate content. However, Miracle-Gro was wet when taken out of the bag, so the additional watering every 3 days may have caused an excess amount of water which explains the lower amount of growth despite the phosphate content. The key component that explains why the Vigoro seeds grow the most successfully out of all those planted, is the fact that in the Vigoro soil, the bean seed sprouted before the soil molded. In Scotts, Jiffy, and Miracle-Gro, the soil molded before there was any indication of seed growth, which ultimately hindered the bean plant from growing as fast as it did in Vigoro. The reason why many of the seeds in all four soils did not grow at all, was due to the fact that the seeds had rotted before they had even sprouted. Therefore, to improve for future experiments, the seeds should be germinated beforehand in order to ensure that the experiment is truly testing plant growth, and not just whether the soil tested allows for seed germination. There are many implications behind the results of this experiment that relate to the real
This lab was a success, because it shows what happens with acid rain, and its effect on seed germination. The seeds will actually grow